ORCID Profile
0000-0002-5118-3885
Current Organisation
University of Wollongong
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In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Renewable Power and Energy Systems Engineering (excl. Solar Cells) | Functional Materials | Materials Engineering | Materials Engineering not elsewhere classified | Structural Chemistry and Spectroscopy | Physical chemistry not elsewhere classified | Chemical engineering | Energy Generation, Conversion and Storage Engineering | Mechanical Engineering | Electrical and Electronic Engineering | Functional materials | Electrochemical energy storage and conversion | Nanofabrication, Growth and Self Assembly
Energy Storage (excl. Hydrogen) | Energy Storage, Distribution and Supply not elsewhere classified | Expanding Knowledge in the Chemical Sciences | Hydrogen Production from Renewable Energy | Energy Transformation not elsewhere classified | Ceramics |
Publisher: American Chemical Society (ACS)
Date: 14-11-2019
Publisher: American Chemical Society (ACS)
Date: 25-03-2014
DOI: 10.1021/CM5002779
Publisher: American Chemical Society (ACS)
Date: 13-12-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1SC01806J
Abstract: In this perspective, we make a systematic summary and give out our comments on constructing nitrided interfaces for stabilizing Li metal electrodes.
Publisher: Elsevier BV
Date: 08-2018
Publisher: International Union of Crystallography (IUCr)
Date: 30-01-2015
DOI: 10.1107/S1600576715000679
Abstract: Structure–property relations are central to understanding functional materials, and for battery research the use of neutron powder diffraction to reveal the atomistic and molecular-scale origin of battery performance characteristics is often essential. Although operando experiments of this kind are increasingly common as neutron sources and instrumentation advance, these experiments are hindered by the often large barrier presented by the preparation of whole batteries that yield a neutron diffraction signal from the electrode of interest that is sufficient to extract detailed structural information. This article presents a custom battery that is specifically designed for operando neutron powder diffraction. The battery is a pouch type and contains layers of positive and negative electrodes in a parallel-connecting stack. Importantly, the battery can be easily prepared in most laboratories, is configurable, and can be used with both lithium and sodium charge carriers. This paper provides some ex le operando neutron powder diffraction studies using this battery.
Publisher: Wiley
Date: 23-09-2020
Abstract: The performance of rechargeable batteries is influenced by the structural and phase changes of components during cycling. Neutron powder diffraction (NPD) provides unique and useful information concerning the structure-function relation of battery components and can be used to study the changes to component phase and structure during battery cycling, known as in operando measurement studies. The development and use of NPD for in operando measurements of batteries is summarized along with detailed experimental approaches that impact the insights gained by these. A summary of the information gained concerning battery function using in operando NPD measurements is provided, including the structural and phase evolution of electrode materials and charge-carrying ion diffusion pathways through these, which are critical to the development of battery technology.
Publisher: Wiley
Date: 27-02-2019
Publisher: American Chemical Society (ACS)
Date: 22-07-2019
Abstract: Solid materials with special atomic and electronic structures are deemed desirable platforms for establishing clear relationships between surface/interface structure characteristics and electrochemical activity. In this work, nickel boride (Ni
Publisher: Wiley
Date: 06-07-2015
Publisher: Cambridge University Press (CUP)
Date: 12-2014
DOI: 10.1017/S088571561400102X
Abstract: The evolution of the 003 reflection of the layered Li(Ni,Co,Mn)O 2 (CGR) and Li(Ni,Co,Al)O 2 (NCR) cathodes in commercial 18650 lithium-ion batteries during charge/discharge were determined using in situ neutron powder diffraction. The 003 reflection is chosen as it is the stacking axis of the layered structure and shows the largest change during charge/discharge. The comparison between these two cathodes shows that the NCR cathode exhibits an unusual contraction near the charged state and during the potentiostatic step, where the potentiostatic step is recommended by the manufacturer. This feature is not shown to the same degree by the CGR cathode. The behavior is likely related to the compositions of these cathodes, the amount of Li/Ni site mixing and the presence of Al or Mn.
Publisher: Elsevier BV
Date: 11-2010
Publisher: American Chemical Society (ACS)
Date: 10-06-2014
DOI: 10.1021/AM502343S
Abstract: Sodium-ion batteries can be the best alternative to lithium-ion batteries, because of their similar electrochemistry, nontoxicity, and elemental abundance and the low cost of sodium. They still stand in need of better cathodes in terms of their structural and electrochemical aspects. Accordingly, the present study reports the first ex le of the preparation of Na2/3(Fe1/2Mn1/2)O2 hierarchical nanofibers by electrospinning. The nanofibers with aggregated nanocrystallites along the fiber direction have been characterized structurally and electrochemically, resulting in enhanced cyclability when compared to nanoparticles, with initial discharge capacity of ∼195 mAh g(-1). This is attributed to the good interconnection among the fibers, with well-guided charge transfers and better electrolyte contacts.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6TA05091C
Abstract: In situ carbon supported V 2 O 5 nanosheets were synthesized by a simple method and showed excellent anode and cathode capacity for LIBs.
Publisher: American Chemical Society (ACS)
Date: 16-01-2019
Publisher: Elsevier BV
Date: 12-2019
Publisher: American Chemical Society (ACS)
Date: 05-01-2017
Abstract: Owing to their high conductivity, crystalline Li
Publisher: Elsevier BV
Date: 04-2013
Publisher: AIP
Date: 2009
DOI: 10.1063/1.3295608
Publisher: American Chemical Society (ACS)
Date: 02-08-2017
Publisher: Wiley
Date: 28-06-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4CP02864C
Abstract: Understanding the electrochemical mechanism of the cobalt-free (Li 0.80(4) Ni 0.20(4) )(Li 0.20(4) Ni 0.13(4) Mn 0.33 Fe 0.33 )O 2 cathode using operando neutron powder-diffraction.
Publisher: American Chemical Society (ACS)
Date: 11-09-2019
Abstract: As an important class of multielectron reaction materials, the applications of transition-metal oxides (TMOs) are impeded by volume expansion and poor electrochemical activity. To address these intrinsic limitations, the renewal of TMOs inspires research on incorporating an advanced interface layer with multiple anionic characteristics, which may add functionality to support properties inaccessible to a single-anion TMO electrode. Herein, a transition-metal oxycarbide (TMOC, M = Mo) with more than one anionic species was prepared as an interface layer on a corresponding oxide. A multiple anionic TMOC possesses advantages of structural stability, abundant active sites, and elevated metal cation valence states. Such merits mitigate volume changes and enhance multielectron reactions significantly. The TMOC nanocomposite has a well-maintained capacity after 1000 cycles at 2 A·g
Publisher: American Chemical Society (ACS)
Date: 21-02-2020
Publisher: Elsevier BV
Date: 06-2010
Publisher: Elsevier BV
Date: 10-2015
Publisher: American Chemical Society (ACS)
Date: 19-07-2017
Publisher: American Chemical Society (ACS)
Date: 23-09-2019
Abstract: Vacancy engineering is a promising approach for optimizing the energy storage performance of transition metal dichalcogenides (TMDs) due to the unique properties of vacancies in manipulating the electronic structure and active sites. Nevertheless, achieving effective introduction of anion vacancies with adjustable vacancy concentration on a large scale is still a big challenge. Herein, MoS
Publisher: Elsevier BV
Date: 2011
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA02812F
Abstract: This paper highlights current research progress and future prospects of high-voltage spinel LiNi 0.5 Mn 1.5 O 4 cathode for next-generation high-enegy-density lithium-ion batteries.
Publisher: Wiley
Date: 08-07-2018
Publisher: Cambridge University Press (CUP)
Date: 10-11-2014
DOI: 10.1017/S0885715614001067
Abstract: The structural evolution of the “zero-strain” Li 4 Ti 5 O 12 anode within a functioning Li-ion battery during charge–discharge cycling was studied using in situ neutron powder-diffraction, allowing correlation of the anode structure to the measured charge–discharge profile. While the overall lattice response controls the “zero-strain” property, the oxygen atom is the only variable in the atomic structure and responds to the oxidation state of the titanium, resulting in distortion of the TiO 6 octahedron and contributing to the anode's stability upon lithiation/delithiation. Interestingly, the trend of the octahedral distortion on charge–discharge does not reflect that of the lattice parameter, with the latter thought to be influenced by the interplay of lithium location and quantity. Here we report the details of the TiO 6 octahedral distortion in terms of the O–Ti–O bond angle that ranges from 83.7(3)° to 85.4(5)°.
Publisher: Elsevier
Date: 2018
Publisher: Elsevier BV
Date: 2011
Publisher: Wiley
Date: 17-06-2019
Publisher: Elsevier BV
Date: 2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA00417C
Abstract: A systematic multi-doping strategy to enhance Li-ion conductivity of the garnet-type Li 7 La 3 Zr 2 O 12 by doping Ga( iii ) Ba( ii ) and Ta( v ) ions into the garnet framework.
Publisher: Wiley
Date: 06-11-2021
Publisher: Elsevier BV
Date: 05-2017
Publisher: American Chemical Society (ACS)
Date: 09-12-2015
DOI: 10.1021/ACS.INORGCHEM.5B01914
Abstract: Sandwich-like V2O5/graphene mesoporous composite has been synthesized by a facile solvothermal approach. The crystalline structure, morphology, and electrochemical performance of the as-prepared materials have been investigated in detail. The results demonstrate that the 30-50 nm V2O5 particles are homogeneously anchored on conducting graphene sheets, which allow the V2O5 nanoparticles to be wired up to a current collector through the underlying conducting graphene layers. As an anode material for lithium ion batteries, the composite exhibits a high reversible capacity of 1006 mAh g(-1) at a current density of 0.5 A g(-1) after 300 cycles. It also exhibits excellent rate performance with a discharge capacity of 500 mAh g(-1) at the current density of 3.0 A g(-1), which is superior to the performance of the vanadium-based materials reported previously. The electrochemical properties demonstrate that the sandwich-like V2O5/graphene mesoporous composite could be a promising candidate material for high-capacity anode in lithium ion batteries.
Publisher: Elsevier BV
Date: 06-2019
Publisher: Trans Tech Publications, Ltd.
Date: 06-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/KEM.617.153
Abstract: The susceptibility of MAX phases to thermal dissociation at 1300-1550 °C in high vacuum has been studied using in-situ neutron diffraction. Above 1400 °C, MAX phases decomposed to binary carbide (e.g. TiC x ) or binary nitride (e.g. TiN x ), primarily through the sublimation of A-elements such as Al or Si, which results in a porous surface layer of MX x being formed. Positive activation energies were determined for decomposed MAX phases with coarse pores but a negative activation energy when the pore size was less than 1.0 μm. The insights for tailor-design of MAX phases with controlled thermal stability and intercalated MXenes for energy storage are addressed.
Publisher: Elsevier BV
Date: 10-2009
Publisher: American Chemical Society (ACS)
Date: 04-11-2021
DOI: 10.1021/JACS.1C08334
Abstract: Portable near-infrared (NIR) light sources are in high demand for applications in spectroscopy, night vision, bioimaging, and many others. Typical phosphor designs feature isolated Cr
Publisher: IOP Publishing
Date: 11-2010
Publisher: Wiley
Date: 10-05-2018
Abstract: Structural design and modification are effective approaches to regulate the physicochemical properties of TiO
Publisher: American Chemical Society (ACS)
Date: 17-12-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6CP00947F
Abstract: Crystallographic structural study of the capacity decay of the LiNi 0.5 Mn 1.5 O 4 ||Li 4 Ti 5 O 12 18650-type battery using operando neutron powder diffraction.
Publisher: Trans Tech Publications, Ltd.
Date: 03-2010
DOI: 10.4028/WWW.SCIENTIFIC.NET/KEM.434-435.169
Abstract: The use of secondary-ion mass spectrometry (SIMS), nuclear magnetic resonance (NMR) and transmission electron microscopy (TEM) to detect the existence of amorphous silica in Ti3SiC2 oxidised at 500–1000°C is described. The formation of an amorphous SiO2 layer and its growth in thickness with temperature was monitored using dynamic SIMS. Results of NMR and TEM verify for the first time the direct evidence of amorphous silica formation during the oxidation of Ti3SiC2 at 1000°C.
Publisher: Wiley
Date: 17-09-2019
Abstract: The feasibility of transition metal carbides (TMCs) as promising high-rate electrodes is still hindered by low specific capacity and sluggish charge transfer kinetics. Improving charge transport kinetics motivates research toward directions that would rely on heterostructures. In particular, heterocomposing with carbon-rich TMCs is highly promising for enhancing Li storage. However, due to limited synthesis methods to prepare carbon-rich TMCs, understanding the interfacial interaction effect on the high-rate performance of TMCs is often neglected. In this work, a novel strategy is proposed to construct a binary carbide heteroelectrode, i.e. incorporating the carbon-rich TMC (M=Mo) with its metal-rich TMC nanowires (nws) via an ingenious in situ disproportionation reaction. Results show that the as-prepared MoC-Mo
Publisher: IGI Global
Date: 2013
DOI: 10.4018/978-1-4666-4066-5.CH002
Abstract: MAX phases are remarkable materials but they become unstable at elevated temperatures and decompose into binary carbides or nitrides in inert atmospheres. The susceptibility of MAX phases to thermal dissociation at 1300-1550 °C in high vacuum has been studied using in-situ neutron diffraction. Above 1400 °C, MAX phases decomposed to binary carbide (e.g., TiCx) or binary nitride (e.g., TiNx), primarily through the sublimation of A-elements such as Al or Si, which results in a porous surface layer of MXx being formed Positive activation energies were determined for decomposed MAX phases with coarse pores but a negative activation energy when the pore size was less than 1.0 µm. The kinetics of isothermal phase decomposition at 1550 °C was modelled using a modified Avrami equation. An Avrami exponent (n) of 1.0 was determined, indicative of the highly restricted diffusion of Al or Si between the channels of M6X octahedra. The role of pore microstructures on the decomposition kinetics is discussed.
Publisher: American Chemical Society (ACS)
Date: 09-02-2017
Publisher: American Chemical Society (ACS)
Date: 10-07-2019
Abstract: Constructing hollow architectures based on metal sulfides is of great interest for high-performance electrode materials for sodium-ion batteries because of their intriguing properties and various applications. However, the relatively low volumetric density and high fragile structure are the obstacles blocking the development of hollow-structured electrode materials. In this work, ball-in-ball structured (Ni
Publisher: Elsevier BV
Date: 05-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6TA03162E
Abstract: Li 4−x/2 Ti 5−x/2 Eu x O 12 @C ( x = 0.004) was prepared via the co-precipitation method. When cycled at 100 C, the discharge capacity stayed at 92.1 mA h g −1 .
Publisher: American Chemical Society (ACS)
Date: 25-09-2018
Publisher: American Chemical Society (ACS)
Date: 31-03-2017
Abstract: All-solid-state Li-ion batteries with metallic Li anodes and solid electrolytes could offer superior energy density and safety over conventional Li-ion batteries. However, compared with organic liquid electrolytes, the low conductivity of solid electrolytes and large electrolyte/electrode interfacial resistance impede their practical application. Garnet-type Li-ion conducting oxides are among the most promising electrolytes for all-solid-state Li-ion batteries. In this work, the large-radius Rb is doped at the La site of cubic Li
Publisher: American Chemical Society (ACS)
Date: 10-05-2021
Publisher: American Chemical Society (ACS)
Date: 06-07-2016
DOI: 10.1021/JACS.6B03932
Abstract: The mechanism of capacity fade of the Li2MnO3·LiMO2 (M = Li, Ni, Co, Mn) composite positive electrode within a full cell was investigated using a combination of operando neutron powder diffraction and transmission X-ray microscopy methods, enabling the phase, crystallographic, and morphological evolution of the material during electrochemical cycling to be understood. The electrode was shown to initially consist of 73(1) wt % R3̅m LiMO2 with the remaining 27(1) wt % C2/m Li2MnO3 likely existing as an intergrowth. Cracking in the Li2MnO3·LiMO2 electrode particle under operando microscopy observation was revealed to be initiated by the solid-solution reaction of the LiMO2 phase on charge to 4.55 V vs Li(+)/Li and intensified during further charge to 4.7 V vs Li(+)/Li during the concurrent two-phase reaction of the LiMO2 phase, involving the largest lattice change of any phase, and oxygen evolution from the Li2MnO3 phase. Notably, significant healing of the generated cracks in the Li2MnO3·LiMO2 electrode particle occurred during subsequent lithiation on discharge, with this rehealing being principally associated with the solid-solution reaction of the LiMO2 phase. This work reveals that while it is the reduction of lattice size of electrode phases during charge that results in cracking of the Li2MnO3·LiMO2 electrode particle, with the extent of cracking correlated to the magnitude of the size change, crack healing is possible in the reverse solid-solution reaction occurring during discharge. Importantly, it is the phase separation during the two-phase reaction of the LiMO2 phase that prevents the complete healing of the electrode particle, leading to pulverization over extended cycling. This work points to the minimization of behavior leading to phase separation, such as two-phase and oxygen evolution, as a key strategy in preventing capacity fade of the electrode.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4TA04271A
Abstract: Potential use of Li 1+x (Mn 1/3 Ni 1/3 Fe 1/3 )O 2 hierarchical nanofibers as a cathode material in both lithium-ion and sodium-ion batteries.
Publisher: American Chemical Society (ACS)
Date: 07-11-2022
Publisher: Proceedings of the National Academy of Sciences
Date: 30-03-2023
Abstract: Transforming CO 2 into valuable chemicals is an inevitable trend in our current society. Among the viable end-uses of CO 2 , fixing CO 2 as carbon or carbonates via Li-CO 2 chemistry could be an efficient approach, and promising achievements have been obtained in catalyst design in the past. Even so, the critical role of anions/solvents in the formation of a robust solid electrolyte interphase (SEI) layer on cathodes and the solvation structure have never been investigated. Herein, lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) in two common solvents with various donor numbers (DN) have been introduced as ideal ex les. The results indicate that the cells in dimethyl sulfoxide (DMSO)-based electrolytes with high DN possess a low proportion of solvent-separated ion pairs and contact ion pairs in electrolyte configuration, which are responsible for fast ion diffusion, high ionic conductivity, and small polarization. The 3 M DMSO cell delivered the lowest polarization of 1.3 V compared to all the tetraethylene glycol dimethyl ether (TEGDME)-based cells (about 1.7 V). In addition, the coordination of the O in the TFSI − anion to the central solvated Li + ion was located at around 2 Å in the concentrated DMSO-based electrolytes, indicating that TFSI − anions could access the primary solvation sheath to form an LiF-rich SEI layer. This deeper understanding of the electrolyte solvent property for SEI formation and buried interface side reactions provides beneficial clues for future Li-CO 2 battery development and electrolyte design.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1EE01851E
Abstract: We report a bio-inspired design strategy for constructing an in situ polymeric SEI in aqueous Zn chemistry. This SEI can restrain interfacial side reactions, facilitate a uniform Zn 2+ flux, and consequently endow a highly stable Zn metal anode.
Publisher: Frontiers Media SA
Date: 10-09-2018
Publisher: American Chemical Society (ACS)
Date: 19-11-2014
DOI: 10.1021/IC5017752
Abstract: Red Ca0.99Al(1-4δ/3-x)Si(1+δ+x)N(3-x)C(x):Eu(2+)0.01 (δ = 0.345 x = 0-0.2) nitride phosphors exhibit a blue-shifted emission with increased eye sensitivity function and excellent thermal stability. The variations in the photoluminescence in the Ca0.99Al(1-4δ/3-x)Si(1+δ+x)N(3-x)C(x):Eu(2+)0.01 (δ = 0.345 x = 0-0.2) system are thoroughly investigated. The enhanced emission energy and the improved thermal stability with increasing x are dominated by the second-sphere shrinkage effect via the substitution of small Si(4+) for large Al(3+) with simultaneous charge compensation. Related proofs of the second-sphere shrinkage effect control for photoluminescence are confirmed via high-resolution neutron powder diffraction, EXAFS, and (29)Si solid-state NMR techniques.
Publisher: Wiley
Date: 07-07-2019
Publisher: American Chemical Society (ACS)
Date: 27-09-2021
Publisher: Elsevier BV
Date: 03-2015
Publisher: Elsevier BV
Date: 12-2013
Publisher: American Chemical Society (ACS)
Date: 14-02-2014
DOI: 10.1021/JP411687N
Publisher: Elsevier
Date: 2014
Publisher: American Chemical Society (ACS)
Date: 24-06-2019
Abstract: Due to the abundant potassium resource on the Earth's crust, researchers now have become interested in exploring high-performance potassium-ion batteries (KIBs). However, the large size of K
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6TA06956H
Abstract: Two-dimensional dysprosium-modified bamboo-slip-like Li 4 Ti 5 O 12 have been synthesized by one-pot hydrothermal method. The s les exhibit superior high-rate capability, and excellent cycle performance.
Publisher: Elsevier BV
Date: 2018
Publisher: Elsevier BV
Date: 07-2018
Publisher: Springer Science and Business Media LLC
Date: 07-09-2018
DOI: 10.1038/S41467-018-05786-1
Abstract: Earth-abundant potassium is a promising alternative to lithium in rechargeable batteries, but a pivotal limitation of potassium-ion batteries is their relatively low capacity and poor cycling stability. Here, a high-performance potassium-ion battery is achieved by employing few-layered antimony sulfide/carbon sheet composite anode fabricated via one-step high-shear exfoliation in ethanol/water solvent. Antimony sulfide with few-layered structure minimizes the volume expansion during potassiation and shortens the ion transport pathways, thus enhancing the rate capability while carbon sheets in the composite provide electrical conductivity and maintain the electrode cycling stability by trapping the inevitable by-product, elemental sulfur. Meanwhile, the effect of the exfoliation solvent on the fabrication of two-dimensional antimony sulfide/carbon is also investigated. It is found that water facilitates the exfoliation by lower diffusion barrier along the [010] direction of antimony sulfide, while ethanol in the solvent acts as the carbon source for in situ carbonization.
Publisher: Wiley
Date: 16-04-2010
Publisher: Wiley
Date: 29-07-2015
Abstract: The ability to directly track the charge carrier in a battery as it inserts/extracts from an electrode during charge/discharge provides unparalleled insight for researchers into the working mechanism of the device. This crystallographic-electrochemical information can be used to design new materials or modify electrochemical conditions to improve battery performance characteristics, such as lifetime. Critical to collecting operando data used to obtain such information in situ while a battery functions are X-ray and neutron diffractometers with sufficient spatial and temporal resolution to capture complex and subtle structural changes. The number of operando battery experiments has dramatically increased in recent years, particularly those involving neutron powder diffraction. Herein, the importance of structure-property relationships to understanding battery function, why in situ experimentation is critical to this, and the types of experiments and electrochemical cells required to obtain such information are described. For each battery type, selected research that showcases the power of in situ and operando diffraction experiments to understand battery function is highlighted and future opportunities for such experiments are discussed. The intention is to encourage researchers to use in situ and operando techniques and to provide a concise overview of this area of research.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA03380G
Abstract: A one-step and solvent-free pyrolysis method was developed to control the synthesis of an Sb/C composite by structural remolding of liquid Sb.
Publisher: Springer Science and Business Media LLC
Date: 11-05-2023
DOI: 10.1038/S41467-023-38384-X
Abstract: Aqueous Zn-ion batteries have attracted increasing research interest however, the development of these batteries has been hindered by several challenges, including dendrite growth, Zn corrosion, cathode material degradation, limited temperature adaptability and electrochemical stability window, which are associated with water activity and the solvation structure of electrolytes. Here we report that water activity is suppressed by increasing the electron density of the water protons through interactions with highly polar dimethylacetamide and trimethyl phosphate molecules. Meanwhile, the Zn corrosion in the hybrid electrolyte is mitigated, and the electrochemical stability window and the operating temperature of the electrolyte are extended. The dimethylacetamide alters the surface energy of Zn, guiding the (002) plane dominated deposition of Zn. Molecular dynamics simulation evidences Zn 2+ ions are solvated with fewer water molecules, resulting in lower lattice strain in the NaV 3 O 8 ·1.5H 2 O cathode during the insertion of hydrated Zn 2+ ions, boosting the lifespan of Zn|| NaV 3 O 8 ·1.5H 2 O cell to 3000 cycles.
Publisher: Elsevier BV
Date: 2014
Publisher: Elsevier BV
Date: 07-2014
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7EE00763A
Abstract: Li 2 TiSiO 4 with a 0.28 V operational potential may fill the gap between the present 0.1 V carbonaceous and the 1.5 V Li 4 Ti 5 O 12 electrodes.
Publisher: American Chemical Society (ACS)
Date: 17-04-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C7SC05185A
Abstract: Lanthanide doped Na 2 Ti 3 O 7 enabled remarkably higher capacity for sodium ion batteries due to the enhanced conductivity by introducing oxygen vacancies.
Publisher: Wiley
Date: 03-12-2019
Publisher: BMJ
Date: 02-2020
DOI: 10.1136/BMJOPEN-2019-031804
Abstract: To assess the health burden of breast hypertrophy and the comparative effectiveness of breast reduction surgery in improving health-related quality of life. Prospective cohort study. A major public tertiary care hospital in Australia. Women with symptomatic breast hypertrophy who underwent breast reduction surgery were followed for 12 months. A comparison control cohort comprised women with breast hypertrophy who did not undergo surgery. Bilateral breast reduction surgery for women in the surgical cohort. The primary outcome measure was health-related quality of life measured preoperatively and at 3, 6 and 12 months postoperatively using the Short Form-36 (SF-36) questionnaire. Secondary outcome measures included post-surgical complications. 209 patients in the surgical cohort completed questionnaires before and after surgery. 124 patients in the control hypertrophy cohort completed baseline and 12-month follow-up questionnaires. At baseline, both groups had significantly lower scores compared with population norms across all scales (p .001). In the surgical cohort significant improvements were seen across all eight SF-36 scales (p .001) following surgery. Within 3 months of surgery scores were equivalent to those of the normal population and this improvement was sustained at 12 months. SF-36 physical and mental component scores both significantly improved following surgery, with a mean change of 10.2 and 9.2 points, respectively (p .001). In contrast, SF-36 scores for breast hypertrophy controls remained at baseline across 12 months. The improvement in quality of life was independent of breast resection weight and body mass index. Breast reduction significantly improved quality of life in women with breast hypertrophy. This increase was most pronounced within 3 months of surgery and sustained at 12-month follow-up. This improvement in quality of life is comparable to other widely accepted surgical procedures. Furthermore, women benefit from surgery regardless of factors including body mass index and resection weight.
Publisher: Elsevier BV
Date: 08-2015
Publisher: Wiley
Date: 12-02-2018
Publisher: Elsevier BV
Date: 11-2013
Publisher: Wiley
Date: 28-11-2020
Abstract: Topological insulators have spurred worldwide interest, but their advantageous properties have scarcely been explored in terms of electrochemical energy storage, and their high‐rate capability and long‐term cycling stability still remain a significant challenge to harvest. p‐Type topological insulator SnSb 2 Te 4 nanodots anchoring on few‐layered graphene (SnSb 2 Te 4 /G) are synthesized as a stable anode for high‐rate lithium‐ion batteries and potassium‐ion batteries through a ball‐milling method. These SnSb 2 Te 4 /G composite electrodes show ultralong cycle lifespan (478 mAh g −1 at 1 A g −1 after 1000 cycles) and excellent rate capability (remaining 373 mAh g −1 even at 10 A g −1 ) in Li‐ion storage owing to the rapid ion transport accelerated by the PN heterojunction, virtual electron highways provided by the conductive topological surface state, and extraordinary pseudocapacitive contribution, whose excellent phase reversibility is confirmed by synchrotron in situ X‐ray powder diffraction. Surprisingly, durable lifespan even at practical levels of mass loading ( mg cm −2 ) for Li‐ion storage and excellent K‐ion storage performance are also observed. This work provides new insights for designing high‐rate electrode materials by boosting conductive topological surfaces, atomic doping, and the interface interaction.
Publisher: American Chemical Society (ACS)
Date: 14-07-2014
DOI: 10.1021/NN503582C
Abstract: Structural phase transitions can be used to alter the properties of a material without adding any additional elements and are therefore of significant technological value. It was found that the hexagonal-SnS2 phase can be transformed into the orthorhombic-SnS phase after an annealing step in an argon atmosphere, and the thus transformed SnS shows enhanced sodium-ion storage performance over that of the SnS2, which is attributed to its structural advantages. Here, we provide the first report on a SnS@graphene architecture for application as a sodium-ion battery anode, which is built from two-dimensional SnS and graphene nanosheets as complementary building blocks. The as-prepared SnS@graphene hybrid nanostructured composite delivers an excellent specific capacity of 940 mAh g(-1)and impressive rate capability of 492 and 308 mAh g(-1) after 250 cycles at the current densities of 810 and 7290 mA g(-1), respectively. The performance was found to be much better than those of most reported anode materials for Na-ion batteries. On the basis of combined ex situ Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and ex situ X-ray diffraction, the formation mechanism of SnS@graphene and the synergistic Na-storage reactions of SnS in the anode are discussed in detail. The SnS experienced a two-structural-phase transformation mechanism (orthorhombic-SnS to cubic-Sn to orthorhombic-Na3.75Sn), while the SnS2 experienced a three-structural-phase transformation mechanism (hexagonal-SnS2 to tetragonal-Sn to orthorhombic-Na3.75Sn) during the sodiation process. The lesser structural changes of SnS during the conversion are expected to lead to good structural stability and excellent cycling stability in its sodium-ion battery performance. These results demonstrate that the SnS@graphene architecture offers unique characteristics suitable for high-performance energy storage application.
Publisher: Springer Science and Business Media LLC
Date: 28-10-2014
DOI: 10.1557/JMR.2014.297
Publisher: Elsevier BV
Date: 03-2017
Publisher: Wiley
Date: 20-04-2016
Abstract: As the delegate of tunnel structure sodium titanates, Na2 Ti6 O13 nanorods with dominant large interlayer spacing exposed facet are prepared. The exposed large interlayers provide facile channels for Na(+) insertion and extraction when this material is used as anode for Na-ion batteries (NIBs). After an activation process, this NIB anode achieves a high specific capacity (a capacity of 172 mAh g(-1) at 0.1 A g(-1) ) and outstanding cycling stability (a capacity of 109 mAh g(-1) after 2800 cycles at 1 A g(-1) ), showing its promising application on large-scale energy storage systems. Furthermore, the electrochemical and structural characterization reveals that the expanded interlayer spacings should be in charge of the activation process, including the enhanced kinetics, the lowered apparent activation energy, and the increased capacity.
Publisher: Elsevier BV
Date: 08-2015
Publisher: American Chemical Society (ACS)
Date: 30-11-2022
Publisher: American Chemical Society (ACS)
Date: 27-12-2017
DOI: 10.1021/ACS.NANOLETT.6B04427
Abstract: Layered α-Ni(OH)
Publisher: Wiley
Date: 03-06-2018
Abstract: Layered lithium transition-metal oxides, with large capacity and high discharge platform, are promising cathode materials for Li-ion batteries. However, their high-rate cycling stability still remains a large challenge. Herein, hierarchical LiNi
Publisher: Elsevier BV
Date: 11-2012
Publisher: Elsevier BV
Date: 11-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2EE02453E
Abstract: Weak Al 3+ –solvent interactions and facile desolvation for ultralong stability of Zn–Al alloy anodes.
Publisher: Wiley
Date: 24-04-2017
Abstract: Ultrathin 2D materials can offer promising opportunities for exploring advanced energy storage systems, with satisfactory electrochemical performance. Engineering atomic interfaces by stacking 2D crystals holds huge potential for tuning material properties at the atomic level, owing to the strong layer-layer interactions, enabling unprecedented physical properties. In this work, atomically thin Bi
Publisher: Wiley
Date: 23-07-2012
Publisher: American Chemical Society (ACS)
Date: 30-09-2015
Publisher: Wiley
Date: 28-07-2019
Publisher: MyJove Corporation
Date: 10-11-2014
DOI: 10.3791/52284
Publisher: Elsevier BV
Date: 05-2017
Publisher: International Union of Crystallography (IUCr)
Date: 09-2017
DOI: 10.1107/S2052252517010363
Abstract: Energy materials form the central part of energy devices. An essential part of their function is the ability to reversibly host charge or energy carriers, and analysis of their phase composition and structure in real time under non-equilibrium conditions is mandatory for a full understanding of their atomic-scale functional mechanism. Real-time powder diffraction is increasingly being applied for this purpose, forming a critical step in the strategic chemical engineering of materials with improved behaviour. This topical review gives ex les of real-time analysis using powder diffraction of rechargeable battery electrodes and porous sorbent materials used for the separation and storage of energy-relevant gases to demonstrate advances in the insights which can be gained into their atomic-scale function.
Publisher: American Chemical Society (ACS)
Date: 02-08-2017
Abstract: By scrutinizing the energy storage process in Li-ion batteries, tuning Li-ion migration behavior by atomic level tailoring will unlock great potential for pursuing higher electrochemical performance. Vacancy, which can effectively modulate the electrical ordering on the nanoscale, even in tiny concentrations, will provide tempting opportunities for manipulating Li-ion migratory behavior. Herein, taking CuGeO
Location: Australia
Start Date: 2016
End Date: 2020
Funder: Australian Research Council
View Funded ActivityStart Date: 2023
End Date: 12-2025
Amount: $398,530.00
Funder: Australian Research Council
View Funded ActivityStart Date: 12-2016
End Date: 12-2023
Amount: $652,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2018
End Date: 12-2018
Amount: $326,367.00
Funder: Australian Research Council
View Funded ActivityStart Date: 11-2021
End Date: 11-2022
Amount: $240,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2018
End Date: 12-2019
Amount: $425,200.00
Funder: Australian Research Council
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