Effect of organic acid on the electrochemical properties of Li4Ti5O12/C composite powders synthesized by spray pyrolysis

被引：27

作者：

Ogihara, Takashi ^{[1
]}

Yamada, Motofumi ^{[1
]}

Fujita, Atsushi ^{[1
]}

Akao, Shinsuke ^{[1
]}

Myoujin, Kenichi ^{[1
]}

机构：

[1] Univ Fukui, Grad Sch Mat Sci & Engn, Fukui 9108507, Japan

来源：

MATERIALS RESEARCH BULLETIN | 2011年 / 46卷 / 06期

基金：

日本科学技术振兴机构;

关键词：

Lithium-ion battery; Spinel; Spray pyrolysis; Powder; Lithium titanate; LITHIUM-ION BATTERIES; ANODE MATERIAL; ELECTRODE MATERIALS; RECHARGEABLE BATTERIES; NEGATIVE ELECTRODE; CELLS; INSERTION; CATHODE;

D O I：

10.1016/j.materresbull.2011.02.041

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A composite powder of Li4Ti5O12 and carbon (LTO/C) was synthesized by spray pyrolysis using an aqueous solution of Li and Ti with an organic acid. As-prepared LTO/C particles had spherical morphology and nonaggregation characteristics. They also had a particle size of approximately 1 mu m with a broad size distribution. As-prepared LTO/C powders were crystallized to have a spinel structure. The addition of lactic acid was most effective for improving the electrochemical properties of LTO/C. The rechargeable capacity of the LTO/C anode obtained from lactic acid was 164 mAh/g at 1 C. The retention was 96% after 100 cycles at 1 C. The rechargeable capacity of the LTO/C anode decreased with an increasing charge rate. The rechargeable capacity of LTO/C obtained from lactic acid was 150 mAh/g at 10 C. The cycle performance of the LTO/C anode obtained from lactic acid also had a high stability at 50 degrees C. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：796 / 800

页数：5

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