Effect of particle size on LiMnPO4 cathodes

被引：344

作者：

Drezen, Thierry ^{[1
]}

Kwon, Nam-Hee ^{[1
]}

Bowen, Paul ^{[2
]}

Teerlinck, Ivo ^{[3
]}

Isono, Motoshi ^{[4
]}

Exnar, Ivan ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, HPL, Sci Pk B PSE B, Lausanne, Switzerland

[2] Ecole Polytech Fed Lausanne, Fac Sci & Tech Ingn, Inst Mat, LTP, Lausanne, Switzerland

[3] Toyota Motor Europe NV SA, B-1930 Zaventem, Belgium

[4] Toyota Motor Co Ltd, Mat Engn Div, Toyota, Aichi 4718571, Japan

来源：

JOURNAL OF POWER SOURCES | 2007年 / 174卷 / 02期

关键词：

LiMnPO4; sol-gel synthesis; lithium ion battery; cathode material; specific energy storage; rate capacity and particle size effects;

D O I：

10.1016/j.jpowsour.2007.06.203

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：

LiMnPO4 was synthesized using a sol-gel method and tested as a cathode material for lithium ion batteries. After calcination at temperatures between 520 and 600 degrees C, primary particle sizes in the range of 140-220 nm were achieved. Subsequent dry ball milling reduced the primary particle diameters from 130 to 90 nm, depending on time of ball milling. Reversible capacities of 156 mAh g(-1) at C/100 and 134 mAh g(-1) at C/10 were measured. At 92% and 79% of the theoretical values, respectively, these are the highest values reported to date for this material. At faster charging rates, the electrochemical performance was found to be improved when smaller LiMnPO4 particles were used. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：949 / 953

页数：5

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