...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Electrochemistry communications >In situ atomic force microscopy study of dimensional changes during Li+ ion intercalation/de-intercalation in highly oriented pyrolytic graphite
【24h】

In situ atomic force microscopy study of dimensional changes during Li+ ion intercalation/de-intercalation in highly oriented pyrolytic graphite

机译：原位原子力显微镜研究高取向热解石墨中Li +离子嵌入/脱嵌过程中的尺寸变化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The knowledge of dimensional changes during the electrochemical intercalation of Li+ ions in a secondary Li+ ion battery is of fundamental importance for a comprehensive understanding of the degradation mechanism of the negative electrode. In this work in situ electrochemical atomic force microscopy was used to measure the step height change during the intercalation/de-intercalation of Li+ into the graphene layers of highly oriented pyrolytic graphite (HOPG). During the first intercalation/de-intercalation cycle an irreversible increase of graphene layer spacing of about 24 +/- 7% was evidenced. During consecutive repetitive scanning between 3 and 0.005 V vs. Li/Li+, a reversible change of the step height of the HOPG of about +/-17% could be observed in 1 M LiClO4 in ethylene carbonate and dimethyl carbonate in a 1:1 (w/w) ratio. The statistical procedure to determine the height changes introduced in the present study is superior to the evaluation of single line scans. (C) 2004 Elsevier B.V. All rights reserved.
机译：二次锂离子电池中锂离子电化学嵌入过程中尺寸变化的知识对于全面了解负极的降解机理至关重要。在这项工作中，原位电化学原子力显微镜用于测量在高定向热解石墨（HOPG）的石墨烯层中Li +的嵌入/脱嵌过程中的台阶高度变化。在第一个插层/脱插周期中，发现石墨烯层间距不可逆地增加了约24 +/- 7％。在3至0.005 V vs. Li / Li +的连续重复扫描过程中，在1M LiClO4的碳酸亚乙酯和碳酸二甲酯中以1：1的比例，HOPG的步进高度可逆变化约为+/- 17％。 （w / w）比率。确定本研究中引入的高度变化的统计程序优于单行扫描的评估。 （C）2004 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号