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Solvothermal synthesis and electrochemical performance of rod-like V6O13 as cathode material for lithium ion battery
Authors:Jinyun He  Weimin Wang  Zhengguang Zou  Fei Long  Zhengyi Fu
Affiliation:1. Sate Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, People’s Republic of China
2. Ministry-Province Jointly-Constructed Cultivation Base for State Key Laboratory of Processing for Non-Ferrous Metal and Featured Materials, Guangxi Zhuang Autonomous Region, Guilin University of Technology, Guilin, 541004, People’s Republic of China
Abstract:Belt-like V6O13 precursor was successfully synthesized via a simple solvothermal method for the first time. The heat-treatment changed its chemical composition, morphology, structure and electrochemical performance. When heat-treated at 350 °C, the product is rod-like particles, which are 0.3 μm wide and 0.4 μm–2 μm long, exhibits the best electrochemical performance. At a rate of 0.1C and in the voltage range of 1.5–4.0 V, it delivered an initial discharge capacity of 323.5 mAhg?1. After 50 cycles, it can still sustain a discharge capacity of 267 mAhg?1. The enhanced electrochemical performance originates from its higher total conductivity, higher lithium diffusion coefficient and better structural reversibility.
Keywords:
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