Structure and electrochemistry of LiCrxMn1-xO2 cathode for lithium-ion batteries

被引：14

作者：

Guo, ZP ^{[1
]}

Wang, GX ^{[1
]}

Liu, HK ^{[1
]}

Dou, SX ^{[1
]}

机构：

[1] Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia

来源：

SOLID STATE IONICS | 2002年 / 148卷 / 3-4期

关键词：

LiCrxMn1-xO2; electrochemistry; structure; monoclinic;

D O I：

10.1016/S0167-2738(02)00074-7

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：

m-LiCrxMn1-xO2 solid solution has been synthesized by a solid state reaction method. The samples obtained show a first charging voltage of similar to 4 V against a lithium electrode, but develops 4- and 3-V plateaus upon cycling, indicating transformation to spinel-like cation ordering within the oxide. Unlike previously reported lithium manganese spinels, the compound of this study shows excellent reversible capacity (> 160 mA h/g at C/5 rate) when cycled over both the 4- and 3-V plateaus. The discharge capacity fade rate of samples decreases with an increase in Cr substitution, and H2SO4 treatment could further improve the electrochemical performance of samples. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：359 / 366

页数：8

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