期刊
ELECTROCHIMICA ACTA
卷 145, 期 -, 页码 327-334出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2014.09.018
关键词
Lithium vanadate; Natural graphite; Composite material; Anode; Lithium ion battery
资金
- Natural Science Foundation of China (NSFC) [51272128, 51302152, 51302153]
Li3VO4 nanoparticles with mean size about 100 nm are uniformly deposited on the surface of natural graphite via a quasi sol gel method. The electrochemical performance of the Li3VO4/natural graphite composite as anode for lithium ion batteries is studied via galvanostatic battery testing, which shows excellent cycle stability and rate capability. At a specific current of 156 mAg(-1), it delivers discharge and charge capacity of 579 and 427 mAh g(-1) in the initial cycle, which maintain of 469 and 468 mAh g(-1) after 100 cycles. After 60 cycles at various specific currents from 234 to 11,719 mAg(-1), the discharge capacity can restore to 450 mAhg(-1) when reverting the discharge/charge current to 234 mA g-1. It is demonstrated that natural graphite has important effect on the electrochemcial performance of the composite electrode, and an appropriate amount of natural graphite is beneficial to reduce the charge transfer resistance and maintain stable charge transfer process in cycling. (C) 2014 Published by Elsevier Ltd.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据