期刊
CARBON
卷 103, 期 -, 页码 28-35出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2016.02.060
关键词
-
资金
- Development Fund of Seoul National University - Dongjin Semichem Co., Korea [0458-20130066]
Carbon-fluorine (CmFn) groups were selectively introduced on the surface of natural and synthetic graphites through plasma-fluorination using C4F8 vacuum plasma treatment. The type of carbon-fluorine bondings on the plasma-fluorinated graphite surface were selectively controlled by adjusting plasma processing time from 10 to 20 min. Systematic surface analyses revealed that the fluorine amount on the surface of plasma-fluorinated graphite was determined by the type of intrinsic structure and degree of graphitization of graphite. The electronegative semi-ionic carbon-fluorine groups on the graphite surface reduced the resistance related to lithium ion migration and charge transfer, leading to highest discharge capacity of 387 mA h/g at 1st cycle and discharge capacity of 293 mA h/g at high 10 C rate without deteriorating the 1st cycle Coulombic efficiency. This novel vacuum plasma treatment of introducing highly electronegative CmFn species on graphite can illuminate a new route of preparing superior lithium ion battery anode. (C) 2016 Elsevier Ltd. All rights reserved.
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