ORCID Profile
0000-0001-7608-8350
Current Organisation
Griffith University
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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.
Chemical engineering | Functional Materials | Microtechnology | Materials Engineering | Composite and Hybrid Materials | Instruments and techniques | Functional materials | Electrochemical energy storage and conversion
Expanding Knowledge in the Chemical Sciences | Expanding Knowledge in Engineering | Integrated Circuits and Devices |
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5TA09123C
Abstract: Silicon and hematite, both important functional materials with high theoretical capacity, have been intensively investigated separately for application as anode materials in lithium ion batteries (LIBs).
Publisher: Springer Science and Business Media LLC
Date: 04-10-2018
DOI: 10.1038/S41467-018-06144-X
Abstract: The low-cost room-temperature sodium-sulfur battery system is arousing extensive interest owing to its promise for large-scale applications. Although significant efforts have been made, resolving low sulfur reaction activity and severe polysulfide dissolution remains challenging. Here, a sulfur host comprised of atomic cobalt-decorated hollow carbon nanospheres is synthesized to enhance sulfur reactivity and to electrocatalytically reduce polysulfide into the final product, sodium sulfide. The constructed sulfur cathode delivers an initial reversible capacity of 1081 mA h g −1 with 64.7% sulfur utilization rate significantly, the cell retained a high reversible capacity of 508 mA h g −1 at 100 mA g −1 after 600 cycles. An excellent rate capability is achieved with an average capacity of 220.3 mA h g −1 at the high current density of 5 A g −1 . Moreover, the electrocatalytic effects of atomic cobalt are clearly evidenced by operando Raman spectroscopy, synchrotron X-ray diffraction, and density functional theory.
Publisher: Elsevier BV
Date: 04-2022
Publisher: Elsevier BV
Date: 05-2023
Publisher: Elsevier BV
Date: 03-2019
Publisher: Elsevier BV
Date: 04-2021
Publisher: Elsevier BV
Date: 07-2016
Publisher: Wiley
Date: 04-10-2017
Abstract: Architectural control of porous solids, such as porous carbon cages, has received considerable attention for versatile applications because of their ability to interact with liquids and gases not only at the surface, but throughout the bulk. Herein we report a scalable, facile spray‐pyrolysis route to synthesize holey carbon microcages with mosquito‐net‐like shells. Using the surfaces of water droplets as the growth templates, styrene–butadiene rubber macromolecules are controllably cross‐linked, and size‐controllable holes on the carbon shells are generated. The as‐formed carbon microcages encapsulating Si nanoparticles exhibit enhanced lithium‐storage performances for lithium‐ion batteries. The scalable, inexpensive synthesis of porous carbon microcages with controlled porosity and the demonstration of outstanding electrochemical properties are expected to extend their uses in energy storage, molecular sieves, catalysis, adsorbents, water/air filters, and biomedical engineering.
Publisher: Wiley
Date: 30-05-2017
Abstract: Germanium (Ge) is a prospective anode material for lithium-ion batteries, as it possesses large theoretical capacity, outstanding lithium-ion diffusivity, and excellent electrical conductivity. Ge suffers from drastic capacity decay and poor rate performance, however, owing to its low electrical conductivity and huge volume expansion during cycling processes. Herein, a novel strategy has been developed to synthesize a Ge@N-doped carbon nanotubes (Ge@N-CNTs) composite with Ge nanoparticles uniformly distributed in the N-CNTs by using capillary action. This unique structure could effectively buffer large volume expansion. When evaluated as an anode material, the Ge@N-CNTs demonstrate enhanced cycling stability and excellent rate capabilities.
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA02415K
Abstract: We report for the first time a facile preparation of double-shell pomegranate-like porous carbon microspheres (PCMs) by a modified templating technique.
Publisher: Elsevier BV
Date: 03-2019
Publisher: American Chemical Society (ACS)
Date: 25-01-2018
Abstract: Graphene-like nanomaterials have received tremendous research interest due to their atomic thickness and fascinating properties. Previous studies mainly focus on the modulation of their electronic structures, which undoubtedly optimizes the electronic properties, but is not the only determinant of performance in practical applications. Herein, we propose a generalized strategy to incrementally manipulate the architectures of several atomically thin transition metal (hydr)oxides, and study their effects on catalytic water oxidation. The results demonstrate the obvious superiority of a wrinkled nanosheet architecture in both catalytic activity and durability. For instance, wrinkled Ni(OH)
Publisher: Elsevier BV
Date: 06-2023
Publisher: American Chemical Society (ACS)
Date: 13-09-2018
Abstract: A porous silicon and carbon composite (PSi/C) with granadilla-like structure as an anode material for lithium-ion batteries has been easily fabricated by spray drying and subsequent pyrolysis treatments. For the PSi/C, yolk-shell-structured Si/C nanobeads are equably distributed inside the porous carbon framework. The key point of this work is the combination of the advantages of both the yolk-shell structure and porous structure in one system. The void space inside the yolk-shell Si/C nanobeads and the interconnected three-dimensional porous carbon frameworks can effectively enhance the cyclic stability and conductivity of this composite. As expected, PSi/C with 15.4% silicon content exhibited a specific capacity as high as 1357.43 mAh g
Publisher: Wiley
Date: 14-01-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7CS00418D
Abstract: The research progress of atomically thin non-layered nanomaterials on energy storage and conversion applications is reviewed in this work.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3RA00205E
Abstract: The impacts of six different types of vacancies on the electronic and mechanical properties of MX2 (M = Mo, W and X = S, Se) monolayers have been theoretically revealed.
Publisher: American Chemical Society (ACS)
Date: 17-07-2017
Abstract: Room-temperature sodium-sulfur batteries are competitive candidates for large-scale stationary energy storage because of their low price and high theoretical capacity. Herein, pure S nanosheet cathodes can be grown in situ on three-dimensional Cu foam substrate with the condensation between binary polymeric binders, serving as a model system to investigate the formation and electrochemical mechanism of unique S nanosheets on the Cu current collectors. On the basis of the confirmed conversion reactions to Na
Publisher: Wiley
Date: 12-10-2017
Abstract: The concept of an all-integrated design with multifunctionalization is widely employed in optoelectronic devices, sensors, resonator systems, and microfluidic devices, resulting in benefits for many ongoing research projects. Here, maintaining structural/electrode stability against large volume change by means of an all-integrated design is realized for silicon anodes. An all-integrated silicon anode is achieved via multicomponent interlinking among carbon@void@silica@silicon (CVSS) nanospheres and cross-linked carboxymethyl cellulose and citric acid polymer binder (c-CMC-CA). Due to the additional protection from the silica layer, CVSS is superior to the carbon@void@silicon (CVS) electrode in terms of long-term cyclability. The as-prepared all-integrated CVSS electrode exhibits high mechanical strength, which can be ascribed to the high adhesivity and ductility of c-CMC-CA binder and the strong binding energy between CVSS and c-CMC-CA, as calculated based on density functional theory (DFT). This electrode exhibits a high reversible capacity of 1640 mA h g
Publisher: Springer Science and Business Media LLC
Date: 27-02-2023
DOI: 10.1038/S41562-023-01522-Y
Abstract: Preterm birth (PTB) is the leading cause of infant mortality worldwide. Changes in PTB rates, ranging from −90% to +30%, were reported in many countries following early COVID-19 pandemic response measures (‘lockdowns’). It is unclear whether this variation reflects real differences in lockdown impacts, or perhaps differences in stillbirth rates and/or study designs. Here we present interrupted time series and meta-analyses using harmonized data from 52 million births in 26 countries, 18 of which had representative population-based data, with overall PTB rates ranging from 6% to 12% and stillbirth ranging from 2.5 to 10.5 per 1,000 births. We show small reductions in PTB in the first (odds ratio 0.96, 95% confidence interval 0.95–0.98, P value .0001), second (0.96, 0.92–0.99, 0.03) and third (0.97, 0.94–1.00, 0.09) months of lockdown, but not in the fourth month of lockdown (0.99, 0.96–1.01, 0.34), although there were some between-country differences after the first month. For high-income countries in this study, we did not observe an association between lockdown and stillbirths in the second (1.00, 0.88–1.14, 0.98), third (0.99, 0.88–1.12, 0.89) and fourth (1.01, 0.87–1.18, 0.86) months of lockdown, although we have imprecise estimates due to stillbirths being a relatively rare event. We did, however, find evidence of increased risk of stillbirth in the first month of lockdown in high-income countries (1.14, 1.02–1.29, 0.02) and, in Brazil, we found evidence for an association between lockdown and stillbirth in the second (1.09, 1.03–1.15, 0.002), third (1.10, 1.03–1.17, 0.003) and fourth (1.12, 1.05–1.19, .001) months of lockdown. With an estimated 14.8 million PTB annually worldwide, the modest reductions observed during early pandemic lockdowns translate into large numbers of PTB averted globally and warrant further research into causal pathways.
Publisher: Wiley
Date: 07-2020
Publisher: Springer Science and Business Media LLC
Date: 03-04-2020
DOI: 10.1038/S41467-020-15498-0
Abstract: Electronic structure engineering lies at the heart of efficient catalyst design. Most previous studies, however, utilize only one technique to modulate the electronic structure, and therefore optimal electronic states are hard to be achieved. In this work, we incorporate both Fe dopants and Co vacancies into atomically thin CoSe 2 nanobelts for /coxygen evolution catalysis, and the resulted CoSe 2 -D Fe –V Co exhibits much higher catalytic activity than other defect-activated CoSe 2 and previously reported FeCo compounds. Deep characterizations and theoretical calculations identify the most active center of Co 2 site that is adjacent to the V Co -nearest surface Fe site. Fe doping and Co vacancy synergistically tune the electronic states of Co 2 to a near-optimal value, resulting in greatly decreased binding energy of OH* (ΔE OH ) without changing ΔE O , and consequently lowering the catalytic overpotential. The proper combination of multiple defect structures is promising to unlock the catalytic power of different catalysts for various electrochemical reactions.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8TA12562G
Abstract: Targeted synthesis of ionic liquid-based polyoxometalate derived N/P-codoped MoO 2 @carbon porous electrodes with superior lithium and sodium storage performance.
Publisher: Elsevier BV
Date: 04-2021
Publisher: Elsevier BV
Date: 07-2023
Publisher: Wiley
Date: 20-05-2019
Abstract: The poor cycling stability resulting from the large volume expansion caused by lithiation is a critical issue for Si-based anodes. Herein, we report for the first time of a new yolk-shell structured high tap density composite made of a carbon-coated rigid SiO
Publisher: CRC Press
Date: 16-07-2019
Publisher: Wiley
Date: 24-11-2016
Abstract: The electrochemical mechanism of nanocrystalline silicon anode in sodium ion batteries is first studied via in operando Raman and in operando X-ray diffraction. An irreversible structural conversion from crystalline silicon to amorphous silicon takes place during the initial cycles, leading to ultrafast reversible sodium insertion in the newly generated amorphous silicon. Furthermore, an optimized silicon/carbon composite has been developed to further improve its electrochemical performance.
Publisher: Elsevier BV
Date: 04-2022
Publisher: Wiley
Date: 21-10-2008
Publisher: Elsevier BV
Date: 12-2022
Publisher: Wiley
Date: 13-03-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1DT01061A
Abstract: The ant-nest-like Cu 2−x Se@C, composed of interconnected Cu 2−x Se channels with amorphous carbon, can deliver a capacity of 879 mA h g −1 after 2500 cycles at 10.0 A g −1.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8TA09553A
Abstract: A monatomic Pt layer (Pt-skin) on ordered intermetallic PtBi clusters (PtBi@Pt) supported on graphene is fabricated via a single atom self-assembling (SAS) method to form a superior catalyst toward electrochemical ethanol oxidation reaction.
Publisher: MDPI AG
Date: 11-03-2021
DOI: 10.3390/NANO11030699
Abstract: The further deployment of silicon-based anode materials is hindered by their poor rate and cycling abilities due to the inferior electrical conductivity and large volumetric changes. Herein, we report a silicon/carbon nanotube (Si/CNT) composite made of an externally grown flexible carbon nanotube (CNT) network to confine inner multiple Silicon (Si) nanoparticles (Si NPs). The in situ generated outer CNTs networks, not only accommodate the large volume changes of inside Si NPs but also to provide fast electronic/ionic diffusion pathways, resulting in a significantly improved cycling stability and rate performance. This Si/CNT composite demonstrated outstanding cycling performance, with 912.8 mAh g−1 maintained after 100 cycles at 100 mA g−1, and excellent rate ability of 650 mAh g−1 at 1 A g−1 after 1000 cycles. Furthermore, the facial and scalable preparation method created in this work will make this new Si-based anode material promising for practical application in the next generation Li-ion batteries.
Publisher: Elsevier BV
Date: 09-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4TA00356J
Publisher: Wiley
Date: 26-10-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1EE00639H
Abstract: Scalable and controllable fabrication of CNT-supported yolk-shelled Si/C anodes with advanced in operando mechanical quantification using a new electrochemical transmission electron microscope measurement system.
Publisher: American Chemical Society (ACS)
Date: 24-07-2018
Publisher: American Chemical Society (ACS)
Date: 15-05-2018
Abstract: We report the use of passion fruit-like double-carbon-shell porous carbon microspheres (PCMs) as the sulfur substrate in room-temperature sodium-sulfur batteries. The PCMs are covered by microsized carbon shells on the outside and consisted of carbon nanobeads with hollow structure inside, leading to a unique multidimensional scaling double-carbon-shell structure with high electronic conductivity and strengthened mechanical properties. Sulfur is filled inside the PCMs (PCMs-S) and protected by the unique double-carbon-shell, which means the subsequently generated intermediate sodium polysulfide species cannot be exposed to the electrolyte directly and well protected inside. In addition, the inner interconnected porous structure provides room for the volume expansion of sulfur during discharge processes. It is found that the PCMs-S with a 63.6% initial Coulombic efficiency contributed to the 290 mA h g
Publisher: Royal Society of Chemistry (RSC)
Date: 12-08-2014
DOI: 10.1039/C4RA04997G
Publisher: Elsevier BV
Date: 06-2018
Publisher: Wiley
Date: 31-03-2016
Publisher: Wiley
Date: 02-02-2021
Publisher: Wiley
Date: 08-02-2023
DOI: 10.1002/CEY2.329
Abstract: The practical application of lithium–sulfur batteries (LSBs) is severely hindered by the undesirable shuttling of lithium polysulfides (LiPSs) and sluggish redox kinetics of sulfur species. Herein, a series of ultrathin single‐atomic tungsten‐doped Co 3 O 4 (W x ‐Co 3 O 4 ) nanosheets as catalytic additives in the sulfur cathode for LSBs are rationally designed and synthesized. Benefiting from the enhanced catalytic activity and optimized electronic structure by W doping, the W x ‐Co 3 O 4 not only reduces the shuttling of LiPSs but also decreases the energy barrier of sulfur redox reactions of sulfur species, leading to accelerated electrode kinetic. As a result, LSB cathodes with the use of 5.0 wt% W 0.02 ‐Co 3 O 4 as the electrocatalyst show the high reversible capacities of 1217.0 and 558.6 mAh g −1 at 0.2 and 5.0 C, respectively, and maintain a high reversible capacity of 644.6 mAh g −1 at 1.0 C (1.0 C = 1675 mA g −1 ) after 500 cycles. With a high sulfur loading of 5.5 mg cm −2 and electrolyte–electrode ratio of 8 μL electrolyte mg sulfur −1 , the 5.0 wt% W 0.02 ‐Co 3 O 4 ‐based sulfur cathode also retains a high reversible areal capacity of 3.86 mAh cm −2 at 0.1 C after 50 cycles with an initial capacity retention of 84.7%.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3CC03969B
Publisher: Springer Science and Business Media LLC
Date: 12-09-2023
Publisher: Wiley
Date: 18-11-2021
Abstract: Electronic structure engineering via integrating two defect structures with opposite modulation effects holds the key to fully unlocking the power of a catalyst. Herein, an interpolation principle is proposed to activate CoOOH via W doping and Co vacancies for the oxygen evolution reaction. Density functional theory suggests opposite roles for the W dopant and the Co vacancy but a synergy between them in tuning the electronic states of the Co site, leading to near‐ideal intermediate energetics and dramatically lowered catalytic overpotential. Experimental studies confirm the modulation of the electronic structure and validate the greatly enhanced catalytic activity with a small overpotential of 298.5 mV to drive 50 mA cm −2 . The discovery of the interpolation between dopants and vacancies opens up a new methodology to design efficient catalysts for various electrochemical reactions.
Publisher: Elsevier BV
Date: 06-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9NH00586B
Abstract: Two separated Au channels for remarkably anisotropic transport and distribution of electrons and holes in 2D AuSe nanosheets for advanced polarization-sensitive optoelectronics.
Publisher: American Chemical Society (ACS)
Date: 05-2017
Abstract: Conversion/alloy-reaction electrode materials promise much higher energy density than the commonly used ones based on intercalation chemistries. However, the low electronic conductivity and, specially, the large volume expansion upon lithiation hinder their practical applications. Here, for the first time, a unique granadilla-inspired structure was designed to prepare the conversion/alloy-reaction anode of carbon coated tin/calcium tin oxide (C@void@Sn/CaSnO
Publisher: Springer Science and Business Media LLC
Date: 13-07-2023
Publisher: Wiley
Date: 14-02-2017
Abstract: Recently ion-intercalation hybrid supercapacitors, with high energy density at high power density, have been widely investigated to meet ever-increasing practical demands. Here, a unique hybrid supercapacitor has been designed and fabricated using self-assembled orthorhombic-phase niobium oxide@carbon (T-Nb
Publisher: Wiley
Date: 08-2019
Publisher: IOP Publishing
Date: 11-2021
Publisher: Wiley
Date: 09-12-2015
Publisher: CRC Press
Date: 16-07-2019
Publisher: Wiley
Date: 04-07-2019
Publisher: Elsevier BV
Date: 02-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1TA02368C
Abstract: A high-performance symmetric full lithium ion battery with a simplified fabrication process, high safety and low cost was designed using novel Li-rich β-Li 2 IrO 3 symmetric electrodes, resulting in outstanding electrochemical performance.
Publisher: American Chemical Society (ACS)
Date: 17-11-2016
Abstract: Fiber-shaped solid-state supercapacitors have aroused much interest in the fields of portable devices because of their attractive features such as high flexibility and safety, tiny volume, and high power density. In this work, NiO/Ni(OH)2 nanoflowers encapsulated in three-dimensional interconnected poly(3,4-ethylenedioxythiophene) (PEDOT) have been fabricated on contra wires through a mild electrochemical route. The as-formed hybrid electrode made of NiO/Ni(OH)2/PEDOT delivered a high specific capacitance of 404.1 mF cm(-2) (or 80.8 F cm(-3)) at a current density of 4 mA cm(-2) and a long cycle life with 82.2% capacitance retention after 1000 cycles. Furthermore, a fiber-shaped flexible all-solid-state asymmetric supercapacitor based on the resulting hybrid electrode was assembled. The energy density of 0.011 mWh cm(-2) at a power density of 0.33 mW cm(-2) was achieved under an operating voltage window of 1.45 V. This work provides an effective strategy to fabricate high-performance electrodes for fiber-shaped flexible asymmetric supercapacitors through a facile and low-cost route.
Publisher: American Chemical Society (ACS)
Date: 02-11-2021
Publisher: Elsevier BV
Date: 06-2020
Publisher: MDPI AG
Date: 24-04-2021
DOI: 10.3390/MA14092178
Abstract: There is great demand for high-performance, low-cost electrode materials for anodes of lithium-ion batteries (LIBs). Herein, we report the recovery of carbon materials by treating waste tire rubber via a facile one-step carbonization process. Electrochemical studies revealed that the waste tire carbon anode had a higher reversible capacity than that of commercial graphite and shows the positive effect of ZnS in the waste tire carbon. When used as the anode for LIBs, waste tire carbon shows a high specific capacity of 510.6 mAh·g−1 at 100 mA·g−1 with almost 97% capacity retention after 100 cycles. Even at a high rate of 1 A·g−1, the carbon electrode presents an excellent cyclic capability of 255.1 mAh·g−1 after 3000 cycles. This high-performance carbon material has many potential applications in LIBs and provide an alternative avenue for the recycling of waste tires.
Publisher: American Chemical Society (ACS)
Date: 15-11-2018
Abstract: Improving the structural stability and the electron/ion diffusion rate across whole electrode particles is crucial for transition metal oxides as next-generation anodic materials in lithium-ion batteries. Herein, we report a novel structure of double carbon-coated Co
Publisher: Wiley
Date: 08-06-2016
Start Date: 05-2019
End Date: 05-2023
Amount: $390,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2024
End Date: 12-2026
Amount: $433,217.00
Funder: Australian Research Council
View Funded Activity