Hydrothermal modification of natural graphite as an anode material for lithium secondary batteries

被引：21

作者：

Shui, JL ^{[1
]}

Zhang, J ^{[1
]}

Ding, CX ^{[1
]}

Yang, X ^{[1
]}

Chen, CH ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2006年 / 128卷 / 1-3期

基金：

美国国家科学基金会; 高等学校博士学科点专项科研基金;

关键词：

batteries; carbon; intercalation of lithium; graphite; surface structure;

D O I：

10.1016/j.mseb.2005.10.033

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

A natural graphite powder was modified by a low-temperature (98 degrees C) hydrothermal reaction in a mixed solution of inorganic acid. Scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy and particle sedimentation method were employed to evaluate the structural modification. It is found that such hydrothermal treatment can lead to the disintegration of big particles and the formation of a less-conducting dense layer on the particle surface. When used as an electrode for rechargeable lithium batteries, the treated graphite exhibits improved reversible capacity in comparison with the original graphite powder and especially the compatibility with the electrolyte captaining propylene carbonate (PC). (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：11 / 15

页数：5

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