ORCID Profile
0000-0002-9791-3476
Current Organisation
Zhejiang University of Technology
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Publisher: Wiley
Date: 19-01-2017
Publisher: Elsevier BV
Date: 03-2016
Publisher: Elsevier BV
Date: 05-2020
Publisher: Wiley
Date: 05-06-2020
Publisher: Wiley
Date: 18-05-2021
Abstract: Sn‐based materials are considered as a promising candidate for anodes of lithium‐ion batteries (LIBs). However, rapid capacity fading associated with large volume expansion during cycling impedes the commercialization of Sn‐based anodes. Herein, a yolk–shell structure is designed via a thermal reduction method and following in situ surface oxidation. In this configuration, CoSn nanoparticles covered by a conformal surface oxide layer are encapsulated in hollow carbon nanocubes. When utilized as an anode material for LIBs, the CoSn@CoSnO x @C exhibits a high discharge capacity of 1177 mAh g −1 after 180 cycles at 0.2 A g −1 and a capacity retention of 86.7% after 500 cycles at a higher current density of 1 A g −1 . The investigation demonstrates that the outstanding electrochemical performance of the composite anodes can be attributed to the synergistic effects of the yolk–shell structure, nanosized CoSn alloy core, and conformal surface oxide layer. This elaborately designed structure can be extended to other alloy‐type anode materials to tackle the capacity decay induced by volume expansion.
Publisher: Beilstein Institut
Date: 11-11-2019
Abstract: Transition metal compounds such as nickel cobalt sulfides (Ni–Co–S) are promising electrode materials for energy storage devices such as supercapacitors owing to their high electrochemical performance and good electrical conductivity. Developing ultrathin nanostructured materials is critical to achieving high electrochemical performance, because they possess rich active sites for electrochemical reactions, shortening the transport path of ions in the electrolyte during the charge/discharge processes. This paper describes the synthesis of ultrathin (around 10 nm) flower-like Ni 1− x Co x S 2 nanoflakes by using templated NiCo oxides. The as-prepared Ni 1− x Co x S 2 material retained the morphology of the initial NiCo oxide material and exhibited a much improved electrochemical performance. The Ni 1− x Co x S 2 electrode material exhibited a maximum specific capacity of 1066.8 F·g −1 (533.4 C·g −1 ) at 0.5 A·g −1 and a capacity retention of 63.4% at 20 A·g −1 in an asymmetric supercapacitor (ASC). The ASC showed a superior energy density of 100.5 Wh·kg −1 (at a power density of 1.5 kW·kg −1 ), an ultrahigh power density of 30 kW·kg −1 (at an energy density of 67.5 Wh·kg −1 ) and excellent cycling stability. This approach can be a low-cost way to mass-produce high-performance electrode materials for supercapacitors.
Publisher: Elsevier BV
Date: 2019
Publisher: Wiley
Date: 30-05-2008
DOI: 10.1002/APP.28470
Publisher: Hindawi Limited
Date: 2015
DOI: 10.1155/2015/401656
Abstract: Ultrathin carbon-coated LiMnPO 4 (ULMP/C) nanoplates were prepared through an ethylene glycol- (EG-) assisted pyrolysis method. Different from most of LiMnPO 4 /C works, the obtained ULMP/C possessed relatively small particle size (less than 50 nm in thickness) and preferable carbon coating (~1 nm in thickness, 2 wt.%). As a reference, LiMnPO 4 /C (LMP/C) composites were also fabricated via the traditional hydrothermal method. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), thermogravimetric analysis (TG), galvanostatic charge-discharge, and cyclic voltammetry (CV) were performed to characterize the crystalline phase, morphology, structure, carbon content, and electrochemical behaviors of s les. The electrochemical performance of bare and carbon-coated LiMnPO 4 was evaluated as cathodes in lithium ion batteries. As a result, the obtained ULMP/C nanoplates demonstrated much higher reversible capacities (110.9 mAh g −1 after 50 cycles at 0.1 C) and rate performances than pure LMP and LMP/C composites. This facile and efficient EG-assisted pyrolysis method can enlighten us on exploiting advanced routes to modify active materials with ultrathin and homogeneous carbon layers.
Publisher: Elsevier BV
Date: 09-2020
Publisher: Elsevier BV
Date: 07-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1NR10550G
Abstract: Nanomaterials have some disadvantages in application as Li ion battery materials, such as low density, poor electronic conductivity and high risk of surface side reactions. In recent years, materials with core-shell nanostructures, which was initially a common concept in semiconductors, have been introduced to the field of Li ion batteries in order to overcome the disadvantages of nanomaterials, and increase their general performances in Li ion batteries. Many efforts have been made to exploit core-shell Li ion battery materials, including cathode materials, such as lithium transition metal oxides with varied core and shell compositions, and lithium transition metal phosphates with carbon shells and anode materials, such as metals, alloys, Si and transition metal oxides with carbon shells. More recently, graphene has also been proposed as a shell material. All these core-shell nanostructured materials presented enhanced electrochemical capacity and cyclic stability. In this review, we summarize the preparation, electrochemical performances, and structural stability of core-shell nanostructured materials for lithium ion batteries, and we also discuss the problems and prospects of this kind of materials.
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TA13233A
Publisher: Wiley
Date: 20-03-2015
Publisher: Elsevier BV
Date: 04-2017
Publisher: Wiley
Date: 06-2016
Publisher: Elsevier BV
Date: 10-2014
Publisher: Wiley
Date: 24-05-2018
Publisher: Elsevier BV
Date: 04-2012
Publisher: Wiley
Date: 18-11-2019
Publisher: Elsevier BV
Date: 04-2021
Publisher: Elsevier BV
Date: 06-2017
Publisher: Elsevier BV
Date: 02-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3RA40546J
Publisher: Wiley
Date: 18-03-2014
Abstract: Highly dispersed Ni nanoparticles (NPs) and abundant functional N-species were integrated into ultrathin carbon nanosheets by using a facile and economical sol-gel route. Embedded- and anchored-type configurations were achieved for the dispersion of Ni NPs in/on N-rich carbon nanosheets. The anchored-type composite exhibited outstanding pseudocapacitance of 2200 F g(-1) at 5 A g(-1) with unusual rate capability and extraordinary cyclic stability over 20 000 cycles with little capacitance decay. Aqueous asymmetric supercapacitors fabricated with this composite cathode demonstrated a high energy density of 51.3 Wh kg(-1) at a relatively large power density of 421.6 W kg(-1) , along with outstanding cyclic stability. This approach opens an attractive direction for enhancing the electrochemical performances of metal-based supercapacitors and can be generalized to design high-performance energy-storage devices.
Publisher: Springer Science and Business Media LLC
Date: 23-02-2019
Publisher: American Chemical Society (ACS)
Date: 15-10-2013
DOI: 10.1021/AM403453R
Abstract: Rambutan-like FeCO3 hollow microspheres were prepared via a facile and economic one-step hydrothermal method. The structure and morphology evolution mechanism was disclosed through time-dependent experiments. After undergoing the symmetric inside-out Ostwald ripening, the resultants formed microporous/nanoporous constructions composed of numerous one-dimensional (1D) nanofiber building blocks. Tested as anode materials of Li-ion batteries, FeCO3 hollow microspheres presented attractive electrochemical performances. The capacities were over 1000 mAh g(-1) for initial charge, ~880 mAh g(-1) after 100 cycles at 50 mA g(-1), and ~710 mAh g(-1) after 200 cycles at 200 mA g(-1). The 1D nanofiber assembly and hollow interior endow this material efficient contact with electrolyte, short Li(+) diffusion paths, and sufficient void spaces to accommodate large volume variation. The cost-efficient FeCO3 with rationally designed nanostructures is a promising anode candidate for Li-ion batteries.
Publisher: Wiley
Date: 07-04-2015
Publisher: Elsevier BV
Date: 08-2018
Publisher: Wiley
Date: 26-07-2020
Publisher: Elsevier BV
Date: 03-2020
Publisher: American Chemical Society (ACS)
Date: 03-2011
DOI: 10.1021/AM1010095
Abstract: Fe(3)O(4)@C microcapsules were prepared using carbon-coated α-FeOOH nanorods as precursors, which were synthesized via two-step hydrothermal reactions. During the subsequent sintering procedure, α-FeOOH was reduced to Fe(3)O(4) by carbon, accompanied by the formation of mesopores. In Fe(3)O(4)@C microcapsules, mesoporous Fe(3)O(4) nanorods are coated with amorphorous carbon layers. The Fe(3)O(4)/C composites with such special structures demonstrate high specific capacity and good cyclic stability as anode materials in Li test cells.
Publisher: Elsevier BV
Date: 06-2019
Publisher: American Chemical Society (ACS)
Date: 18-07-2014
DOI: 10.1021/AM5021233
Abstract: As substitutions for transition metal oxides (MOs), transition metal carbonates (MCO3) have been attracting more and more attention because of their lithium storage ability in recent years. Is MCO3 better than MOs for lithium storage? To answer this question, monodisperse CoCO3 and CoO microspindles with comparable structures were synthesized and investigated as a case study. Excluding its structural effect, we found CoCO3 still exhibited reversible capacities and rate capabilities much higher than those of CoO. The reversible capacity of CoCO3 after 10 cycles was 1065 mAh g(-1), 48.2% higher than that (∼720 mAh g(-1)) of CoO. Furthermore, the greatly different electrochemical behaviors were investigated by analyzing the discharge-charge profiles, cyclic voltammetry curves, and Nyquist plots in depth. This work can improve our understanding of the lithium storage advantages of MCO3 against MOs and enlighten us in terms of developing high-performance MCO3 with favorable structures.
Publisher: American Chemical Society (ACS)
Date: 05-11-2012
DOI: 10.1021/JP310054B
Publisher: Royal Society of Chemistry (RSC)
Date: 30-06-2014
DOI: 10.1039/C4TA02055C
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2CP41604B
Abstract: Mesoporous slit-structured NiO materials were prepared through a simple hydrothermal route with sodium dodecyl benzene sulfonate (SDBS) as an additive. The as-prepared NiO s les presented high specific capacitance of over 1700 F g(-1) in the potential range from 0.10 to 0.56 V (vs. Hg/HgO/6 mol L(-1) KOH) at a constant current of 2 A g(-1), and good capacitance retention of ∼90% after 1000 continuous charge-discharge cycles. Only the NiO electrode materials with uniform slit-structured mesopores, which were confirmed through nitrogen adsorption-desorption isotherms and high-resolution transmission electron microscope, delivered excellent capacitances far beyond any previous report up to now. Pore structures (including pore shape, size, and distribution) are dominant factors in pseudocapacitor materials.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0QI00985G
Abstract: As a new anode material for sodium-ion batteries (SIBs), VS 4 shows impressive energy storage potential due to its unique one-dimensional parallel chain structure, large chain spacing and high sulfur content.
Publisher: Elsevier BV
Date: 09-2016
Publisher: Elsevier BV
Date: 03-2013
Publisher: Wiley
Date: 11-12-2017
Publisher: American Chemical Society (ACS)
Date: 11-11-2013
DOI: 10.1021/AM404250K
Abstract: LiCoMnO4 with nanosized truncated octahedral structure was prepared via a modified sol-gel route. The single-crystalline subunits grew completely without serious agglomeration. The growth mechanism was discussed in detail. The s le was tested as cathode materials for 5 V Li-ion batteries. Ni doping was also investigated to decrease the content of Mn(3+) ions and the Mn dissolution, and then the decomposition of electrolyte was inhibited on the cathode surface. LiCo0.9Ni0.1MnO4 exhibited enhanced cyclic stability compared with the pristine LiCoMnO4.
Publisher: MDPI AG
Date: 09-12-2019
DOI: 10.3390/MA12244123
Abstract: Nano-sized spinel LiMn2O4/carbon nanotubes (LMO/CNTs) composite is facilely synthesized via a one-step dynamic hydrothermal approach. The characterizations and electrochemical measurements reveal that LiMn2O4 particles with narrow size distribution are well dispersed with CNTs in the composite. The LMO/CNTs nanocomposite with 5 wt % CNTs displays a high specific discharge capacity of 114 mAh g−1 at 1C rate, and the retention rate after 180 cycles at room temperature reaches 94.5% in the potential window of 3.3 to 4.3 V vs. Li/Li+. Furthermore, the electrochemical performance of the composite with 5 wt % CNTs at elevated temperature (55 °C) is also impressive, 90% discharging capacity could be maintained after 100 cycles at 1C. Such excellent electrochemical performance of the final product is attributed to the content of CNTs added in the hydrothermal process and small particle size inherited from pretreated MnO2 precursor.
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3TA14498D
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5CP01954K
Abstract: This work discloses a novel synthesis method for yolk–shell Si@void@C nanocomposites as high-performance anodes in lithium ion batteries.
Publisher: Wiley
Date: 02-09-2015
Publisher: Elsevier BV
Date: 02-2014
Publisher: Wiley
Date: 11-08-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3RA41341A
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3CC47149G
Abstract: In this work, we present a facile sol-gel method to prepare a composite of Co nanoparticles highly dispersed on N-rich carbon substrates (Co-C composite). The assembled Li-O2 batteries with the composite as a cathode catalyst showed lower overpotential and better cyclability, and the improved performance may be attributed to the superior electrocatalytic activity of the Co-C composite.
Publisher: American Chemical Society (ACS)
Date: 13-12-2016
Abstract: The challenging problems of SnO
Publisher: Elsevier BV
Date: 04-2009
Publisher: Elsevier BV
Date: 09-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/B925696B
Abstract: Core double-shell Si@SiO(2)@C nanocomposites were prepared through a facile route. SiO(2) and carbon double shells effectively accommodated the volume swing of Si during repeated cycles and enhanced the electronic network between nanoparticles.
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7RA02214J
Abstract: Well-proportioned PANI-derived carbon shells effectively limit the agglomeration of Cu 6 Sn 5 nanocores and hence present extraordinary lithium storage performances.
Publisher: Elsevier BV
Date: 04-2016
Publisher: Elsevier BV
Date: 2013
Publisher: Elsevier BV
Date: 02-2020
Publisher: American Chemical Society (ACS)
Date: 09-2022
Publisher: Elsevier BV
Date: 12-2021
Publisher: Wiley
Date: 03-2019
Abstract: In this work, we introduce Ni nanopyramid arrays (NPAs) supported amorphous Ge anode architecture and demonstrate its effective improvement in sodium storage properties. The Ni−Ge NPAs are prepared by facile electrodeposition and sputtering method, which eliminates the need for any binder or conductive additive when used as a Na‐ion battery anode. The electrodes display stable cycling performance and enhanced rate capabilities in contrast with planar Ge electrodes, which can be owing to the rational design of the architectured electrodes and firm bonding between current collector and active material (i. e. Ni and Ge, respectively). To validate improvement of nanostructures on electrochemical performance, sodium insertion behavior of crystalline Ge derived from Mg 2 Ge precursor has been investigated, in which limited but effective enhancement of sodium storage properties are realized by introducing porous nanostructure in crystalline Ge. These results show that elaborately designed configuration of Ge electrodes may be a promising anode for Na‐ion battery applications.
Publisher: American Chemical Society (ACS)
Date: 30-10-2021
Start Date: 2015
End Date: 2017
Funder: National Natural Science Foundation of China
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