Electrode characteristics of Li2Ti3O7-ramsdellite processed by mechanical grinding

被引：7

作者：

De Dompablo, MEAY ^{[1
]}

García, J

Várez, A

García-Alvarado, F

机构：

[1] Univ Complutense Madrid, Fac Quim, Dept Quim Inorgan, E-28040 Madrid, Spain

[2] Univ Carlos III Madrid, Dept Mat, Leganes 28911, Spain

[3] Univ San Pablo CEU, Dept Quim Inorgan & Mat, Fac Ciencias Expt & Tecn, Madrid 28668, Spain

来源：

JOURNAL OF MATERIALS SCIENCE | 2002年 / 37卷 / 18期

关键词：

D O I：

10.1023/A:1019688413180

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of mechanical grinding on the electrochemical properties of Li2Ti3O7 regarding lithium insertion is studied. X-ray diffraction experiments of milling compounds showed a progressively amorphization of the crystalline material due to both crystalline size decreasing and internal strain increasing. These structural modifications are reflected in the electrochemical behavior of Li2Ti3O7, when it is used as the positive electrode in lithium cells. As a function of milling time a higher specific capacity is obtained during the first discharge of the cell, but when charging an increasing in the irreversible capacity is observed. The most promising Li2Ti3O7 based electrode has been achieved, under our experimental conditions, for 13 hours milling that produces a compound with crystallite size of approximately 20 nm. (C) 2002 Kluwer Academic Publishers.

引用

页码：3981 / 3986

页数：6