Enhanced cycle stability of spinel LiMn2O4 by a melting impregnation method

被引：3

作者：

Qi H. ^{[1
]}

Cao G.-S. ^{[1
]}

Xie J. ^{[1
]}

Zhao X.-B. ^{[1
]}

机构：

[1] State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University

来源：

Frontiers of Materials Science in China | 2008年 / 2卷 / 3期

关键词：

Cathode material; Lithium-ion batteries; Melting impregnation; Spinel lithium manganate;

D O I：

10.1007/s11706-008-0050-4

中图分类号：

学科分类号：

摘要：

Spinel LiMn2O4 particles were successfully coated with CuO, MgO, ZnO, Al2O3 and CeO2 by a melting impregnation method. Except for the CeO2-coated sample, all the others exhibit better cycling stability than bare LiMn2O4 at room temperature and at 55°C. Among these samples, the ZnO-coated sample shows the best cycling stability. A capacity of 100 mA•h•g -1 still remained after 100 cycles at 55°C while the bare LiMn2O4 retains a capacity of only 80 mA•h• g-1 after the same number of cycles. The improvement in the cycling stability is attributed to the suppressed Mn dissolution caused by HF. © 2008 Higher Education Press and Springer-Verlag GmbH.

引用

页码：291 / 294

页数：3

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