期刊
JOURNAL OF POWER SOURCES
卷 112, 期 2, 页码 634-638出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0378-7753(02)00439-1
关键词
lithium secondary batteries; sol-gel method; layered manganese; cathode materials; Li2MnO3
Layered Li[Li(1-2x)/3NixMn(2-x)/3]O-2 materials with x = 0.41, 0.35, 0.275 and 0.2 are synthesised by means of a sol-gel method. The layered structure is stabilized by a solid solution between LiNiO2 and Li2MnO3. The discharge capacity increases with increasing lithium content at the 3a sites in the Li[Li(1-2x)/3NixMn(2-x)/3]O-2. A Li[Li0.2Ni0.2Mn0.6]O-2 electrode delivers discharge capacities of 200 and 240 mAh g(-1) with excellent cycleability at 30 and 55 degreesC, respectively. (C) 2002 Elsevier Science B.V. All rights reserved.
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