Electrochemical performance of nanocomposite LiMnPO4/C cathode materials for lithium batteries

被引：129

作者：

Bakenov, Zhumabay ^{[1
]}

Taniguchi, Izumi ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Chem Engn, Meguro Ku, Tokyo 1528550, Japan

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 01期

关键词：

LiMnPO4/C composite cathode; Spray pyrolysis; Wet ball milling; High-voltage cycling; ULTRASONIC SPRAY-PYROLYSIS; CARBON-COATED LIFEPO4; ION BATTERIES; ELECTRODE MATERIALS; HEAT-TREATMENT; COMBINATION; OLIVINES;

D O I：

10.1016/j.elecom.2009.10.039

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A LiMnPO4/C composite cathode was prepared by a combination of spray pyrolysis and wet ball milling. The cathode showed stable performance at various cutoff voltages up to 4.9 V. The cutoff voltage increase up to 4.9 V allowed the achievement of a high discharge capacity in galvanostatic charge-discharge tests. The discharge capacities of 153 mAh g(-1) at 0.05 C and 149 mAh g(-1) at 0.1 C were achieved at room temperature; the trickle-mode discharge capacities at room temperature were 132, 120 and 91 mAh g(-1) at 0.1, 1 and 5 C discharge rates, respectively. The cell exhibited a good rate capability in the galvanostatic cycling up to 5 C discharge rates at both ambient temperature and 50 degrees C. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：75 / 78

页数：4

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