Nanosheet-structured LiV3O8 with high capacity and excellent stability for high energy lithium batteries

被引：113

作者：

Pan, Anqiang ^{[1
,2
]}

Zhang, Ji-Guang ^{[1
]}

Cao, Guozhong ^{[3
]}

Liang, Shuquan ^{[2
]}

Wang, Chongmin ^{[1
]}

Nie, Zimin ^{[1
]}

Arey, Bruce W. ^{[1
]}

Xu, Wu ^{[1
]}

Liu, Dawei ^{[3
]}

Xiao, Jie ^{[1
]}

Li, Guosheng ^{[1
]}

Liu, Jun ^{[1
]}

机构：

[1] Pacific NW Natl Lab, Richland, WA 99354 USA

[2] Cent S Univ, Dept Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

[3] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 27期

基金：

中国国家自然科学基金;

关键词：

POSITIVE ELECTRODE MATERIALS; LOW-TEMPERATURE SYNTHESIS; SOL-GEL METHOD; ELECTROCHEMICAL PROPERTIES; CATHODE MATERIAL; ION BATTERIES; RAMAN-SPECTROSCOPY; SECONDARY BATTERIES; CRYSTAL-STRUCTURE; CARBON NANOTUBES;

D O I：

10.1039/c1jm10976f

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：

Highly stable LiV3O8 with a nanosheet-structure was successfully prepared using polyethylene glycol (PEG) polymer in the precursor solution as the structure modifying agent, followed by calcination in air at 400 degrees C, 450 degrees C, 500 degrees C, and 550 degrees C. These materials provide the best electrochemical performance ever reported for LiV3O8 crystalline electrodes, with a specific discharge capacity of 260 mAh g(-1) and no capacity fading over 100 cycles at 100 mA g(-1). The excellent cyclic stability and high specific discharge capacity of the material are attributed to the novel nanosheets structure formed in LiV3O8. These LiV3O8 nanosheets are good candidates for cathode materials for high-energy lithium battery applications.

引用

页码：10077 / 10084

页数：8

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