Enhancement of electrochemical reaction rate by deposition of alumina on natural graphite surface

被引：9

作者：

Kim, SS ^{[1
]}

Kadoma, Y ^{[1
]}

Ikuta, H ^{[1
]}

Uchimoto, Y ^{[1
]}

Wakihara, M ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Appl Chem, Meguro Ku, Tokyo 1528552, Japan

来源：

ELECTROCHEMISTRY | 2001年 / 69卷 / 11期

关键词：

natural graphite; surface treatment; XANES; lithium ion battery;

D O I：

10.5796/electrochemistry.69.830

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Electrochemical performance of surface-treated natural graphite with Al has been investigated using CR 2032 coin type test cell. Aluminum tri-ethoxide was used as Al source. The solution of aluminum tri-ethoxide was mixed with natural graphite under ultrasonic wave. Calcination temperature of Al-treated graphite has critical influence on local structure of alumina. The local structure of alumina on the surface of the Al-treated graphite was investigated by curve fitting analysis of Al K-edge XANES study. The peak ratio of AlO4 tetrahedra to AlO6 octahedra was increased with the calcination temperature. The difference of chemical diffusion coefficient of lithium in the Al-treated and pristine graphite was measured by current pulse relaxation (CPR) method.

引用

页码：830 / 833

页数：4

共 13 条

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