Lithium Intercalation Mechanism and Critical Role of Structural Water in Layered H2V3O8 High-Capacity Cathode Material for Lithium-Ion Batteries

ABSTRACTLi2FeP2O7 is a newly developed polyanionic cathode material for high performance lithium ion batteries. It is considered very attractive due to its large specific capacity, good thermal and chemical stability, and environmental benignity. However, the application of Li2FeP2O7 is limited by its low ionic and electronic conductivities. To overcome the above problem, a solution-based technique was successfully developed to synthesize Li2FeP2O7 powders with very fine and uniform particle size (< 1 μm), achieving much faster kinetics. The obtained Li2FeP2O7 powders were tested in lithium ion batteries by measurements of cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge/discharge cycling. We found that the modified Li2FeP2O7 cathode could maintain a relatively high capacity even at fast discharge rates.

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A Feasibility Study on the Use of Li4V3O8as a High Capacity Cathode Material for Lithium-Ion Batteries

Chemistry - A European Journal ◽

10.1002/chem.200800286 ◽

2008 ◽

Vol 14 (35) ◽

pp. 11141-11148 ◽

Cited By ~ 7

Author(s):

See-How Ng ◽

Nicolas Tran ◽

Kirill G. Bramnik ◽

Hartmut Hibst ◽

Petr Novák

Keyword(s):

Cathode Material ◽

Lithium Ion Batteries ◽

Feasibility Study ◽

High Capacity ◽

Lithium Ion

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Graphene modified Li1.2Ni0.133Co0.133Mn0.534O2 cathode material for high capacity lithium-ion batteries

Journal of Applied Electrochemistry ◽

10.1007/s10800-018-1251-x ◽

2018 ◽

Vol 48 (11) ◽

pp. 1273-1283 ◽

Cited By ~ 2

Author(s):

Zhen Wang ◽

Yongming Zhu ◽

Yunpeng Jiang ◽

Peng Gao ◽

Guangwu Wen

Keyword(s):

Cathode Material ◽

Lithium Ion Batteries ◽

High Capacity ◽

Lithium Ion

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A Li-rich layered-spinel cathode material for high capacity and high rate lithium-ion batteries fabricated via a gas-solid reaction

Science China Materials ◽

10.1007/s40843-020-1433-4 ◽

2020 ◽

Vol 63 (12) ◽

pp. 2435-2442

Author(s):

Lingqun Xu ◽

Zhenhe Sun ◽

Yu Zhu ◽

Yu Han ◽

Manman Wu ◽

...

Keyword(s):

Cathode Material ◽

Lithium Ion Batteries ◽

High Capacity ◽

Lithium Ion ◽

High Rate ◽

Solid Reaction ◽

Spinel Cathode ◽

Gas Solid Reaction

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Al-doped VO2(B) nanobelts as cathode material with enhanced electrochemical properties for lithium-ion batteries

Functional Materials Letters ◽

10.1142/s1793604718500686 ◽

2018 ◽

Vol 11 (04) ◽

pp. 1850068 ◽

Cited By ~ 7

Author(s):

Changlei Niu

Keyword(s):

Electrochemical Performance ◽

Cathode Material ◽

Lithium Ion Batteries ◽

Valence State ◽

Electrode Materials ◽

High Capacity ◽

Lithium Ion ◽

Lithium Storage ◽

Free Standing ◽

Lattice Volume

Aluminium has shown its superiority in stabilization of the monoclinic VO2(B) in free-standing nanobelts. In this paper, aluminium-doped VO2(B) nanobelts are successfully fabricated by a facile one-step hydrothermal method and used as cathode for lithium-ion battery. XPS results show that Al-doping promotes the formation of high valence state of vanadium in VO2(B) nanobelts. Due to the accommodation of valence state of vanadium and lattice volume, Al-doped VO2(B) nanobelts used as the cathode material for lithium-ion batteries exhibit better lithium storage properties with high capacity of 172[Formula: see text]mAh[Formula: see text]g[Formula: see text] and cycling stability than undoped VO2(B) nanobelts. This work demonstrates that the doping of aluminium can significantly enhance the electrochemical performance of VO2(B), suggesting that appropriate cationic doping is an efficient path to improve the electrochemical performance of electrode materials.

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