Lithium insertion material of LiNi1/2Mn1/2O2 for advanced lithium-ion batteries

被引：262

作者：

Makimura, Y ^{[1
]}

Ohzuku, T ^{[1
]}

机构：

[1] Osaka City Univ, Grad Sch Engn, Dept Appl Chem, Electrochem & Inorgan Chem Lab, Osaka 5588585, Japan

来源：

JOURNAL OF POWER SOURCES | 2003年 / 119卷

关键词：

lithium-ion battery; lithium nickel manganese oxide; nickel manganese double hydroxide;

D O I：

10.1016/S0378-7753(03)00170-8

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：

Lithium nickel manganese oxide of LiNi1/2Mn1/2O2, which is a one-to-one mixture of LiNiO2 and LiMnO2 in its chemical composition, has been prepared by an improved processing method. Cycle tests of a lithium cell with LiNi1/2Mn1/2O2 operated in voltages of 2.5-4.5 V shows about 200 mAh g(-1) of rechargeable capacity without noticeable loss during 30 cycles. The thermal behavior of fully charged LiNi1/2Mn1/2O2 is also examined by differential scanning calorimetry (DSC) and shows that the exothermic reaction of square(0.89)Li(0.11)Ni(1/2)Mn(1/2)O(2) (fully charged state under this experimental condition) is milder than that of squareNiO(2) or squareMn(2)O(4). The results on rate-capability tests of a Li/LiNi1/2Mn1/2O2 cell show that 85% of discharge capacity observed at low rate discharge can be stored and delivered at 1 h rate at present. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：156 / 160

页数：5

共 22 条

[1] Formation and structural properties of layered LiMnO2 cathode materials [J].