LiMn1.95M0.05O4 (M: Al, Co, Fe, Ni, Y) cathode materials prepared by combustion synthesis

被引：35

作者：

Choi, HJ ^{[1
]}

Lee, KM ^{[1
]}

Lee, JG ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Multifunct Ceram Res Ctr, Seoul 130650, South Korea

来源：

JOURNAL OF POWER SOURCES | 2001年 / 103卷 / 01期

关键词：

LiMn2O4; synthesis; combustion; doping;

D O I：

10.1016/S0378-7753(01)00835-7

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：

Spinel LiMn1.95M0.05O4 (M: Al, Co, Fe, Ni, or Y) is prepared by a combustion synthesis, which is a simple, rapid and cost-effective process for obtaining oxide powders. The spinel is obtained by combustion of lithium hydroxide, manganese nitrate. M-nitrates, and urea at about 280 degreesC for 1 min. Well-defined spinel LiMn1.95M0.05O4 was obtained by further heat-treatment at 800 degreesC for 10 h. The synthesized LiMn1.95M0.05O4 shows lower initial capacities, viz. 90-132 mAh/g than undoped LiMn2O4. The latter has an initial capacity of 146 mAh/g which fades to 100 mAh/g with cycling. On the other hand, LiMn1.95Co0.05O4, LiMn1.95Ni0.05O4, and LiMn1.95Y0.05O4 display better cycleability than LiMn2O4. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：154 / 159

页数：6

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