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Preparation and Lithium Storage Performance of Two Dimensional Fold-like V2O5 Nanomaterial |
Yanwei LI1,2, Zhiping XIE1, Canzheng LIU1, Jinhuan YAO1( ), Jiqiong JIANG1, Jianwen YANG1 |
1 Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China 2 Key Laboratory of Rrenewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China |
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Cite this article:
Yanwei LI, Zhiping XIE, Canzheng LIU, Jinhuan YAO, Jiqiong JIANG, Jianwen YANG. Preparation and Lithium Storage Performance of Two Dimensional Fold-like V2O5 Nanomaterial. Chinese Journal of Materials Research, 2017, 31(5): 374-380.
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Abstract V2O5 gel was prepared by sol-gel method and V2O5 nanomaterial was fabricated by freeze-drying the V2O5 gel with proper pH value and followed by annealing treatment. XRD and FESEM results revealed that the prepared V2O5 nanomaterial consists of a single orthorhombic phase small V2O5 nanoparticles with alarge are a two-dimensional fold-like morphology. The lithium storage performance of the prepared V2O5 nanomaterial was characterized by cyclic voltammetry(CV), electrochemical impedance spectroscopy(EIS), potential relaxation technique(PRT), and charge-discharge tests. Due to the unique two-dimensional fold-like nanostructure, the prepared V2O5 nanomaterial exhibits much higher specific discharge capacity, better high rate performance, excellent cycling stability, and enhanced electrochemical reaction kinetics rather than the commercial V2O5. Therefore, the two-dimensional fold-like V2O5 nanomaterial is a very promising cathode material for lithium-ion batteries.
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Received: 23 August 2016
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Fund: Supported by National Natural Science Foundation of China (Nos.51664012, 51464009 & 21263003), Guangxi Natural Science Foundation of China (Nos.2015GXNSFGA139006 & 2014GXNSFBA118238), and Key Laboratory of Renewable Energy, Chinese Academy of Sciences (No.y507k61001) |
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