A High-Capacity Cathode for Lithium Batteries Consisting of Porous Microspheres of Highly Amorphized Iron Fluoride Densified from Its Open Parent Phase

被引：121

作者：

Li, Chilin ^{[1
]}

Mu, Xiaoke ^{[2
]}

van Aken, Peter A. ^{[2
]}

Maier, Joachim ^{[1
]}

机构：

[1] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

[2] Max Planck Inst Intelligent Syst, D-70569 Stuttgart, Germany

来源：

ADVANCED ENERGY MATERIALS | 2013年 / 3卷 / 01期

关键词：

amorphized iron fluoride; high-capacity cathodes; porous microspheres; lithium batteries; ionic liquids; open frameworks; PERFORMANCE; ELECTRODES;

D O I：

10.1002/aenm.201200209

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：

An FeF3 cathode with very high reversible capacity, exceeding 200 mAh g-1, is achieved by amorphizing of FeF3. The amorphization is achieved by densifying the open structure phase along with the removal of channel H2O at 0 degrees C in BmimBF4. This process is accompanied by a voltage increase of 200 mV. The generation of a hierarchical electron/ion wiring network, enabled by the interaction of ionic liquid with carbon nanotube and FeF3 surfaces, significantly improves the reversibility.

引用

页码：113 / 119

页数：7

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