LI+ INSERTION INTO MN SPINEL PHASES

被引：85

作者：

PISTOIA, G ^{[1
]}

WANG, G ^{[1
]}

WANG, C ^{[1
]}

机构：

[1] CHINESE ACAD SCI,INST PHYS,BEIJING,PEOPLES R CHINA

来源：

SOLID STATE IONICS | 1992年 / 58卷 / 3-4期

关键词：

D O I：

10.1016/0167-2738(92)90130-H

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Partly substituted and unsubstituted Mn spinels have been synthesized at temperatures of 350-450-degrees-C. The inclusion of Cr ions in the cubic spinel structure is particularly effective in catalyzing its formation at low temperature. A spinel of composition LiMn2-xCrxO4.35 (x approximately 0.2-0.4), prepared at 350-370-degrees-C, has a defective structure of low-crystallinity and a high surface area. It can be cycled at 1 mA/cm2 (approximately C/3) with a stabilized capacity of 0.13 Ah/g. Analogous spinels prepared at 450-degrees-C, with or without Cr, have inferior performances. The Li+ diffusion coefficient in the Cr-containing spinel is higher than that of the unsubstituted material.

引用

页码：285 / 292

页数：8

共 24 条

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