Silicon Composite Electrode with High Capacity and Long Cycle Life

被引：275
作者：
Mazouzi, D. [1 ,2 ]
Lestriez, B. [1 ]
Roue, L. [2 ]
Guyomard, D. [1 ]
机构：
[1] Univ Nantes, CNRS, Inst Mat Jean Rouxel, Nantes, France
[2] Inst Natl Rech Sci Energie Varennes, Ctr Energie Mat & Telecommun, Varennes, PQ J3X 1S2, Canada
来源：
ELECTROCHEMICAL AND SOLID STATE LETTERS | 2009年 / 12卷 / 11期
关键词：
carbon; electrochemical electrodes; elemental semiconductors; mechanical contact; nanocomposites; nanofabrication; nanoparticles; secondary cells; silicon; SI NEGATIVE ELECTRODES; CARBOXYMETHYL CELLULOSE; BINDING MECHANISM; ION BATTERIES; BINDER; ANODES;
D O I：
10.1149/1.3212894
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A nanosilicon-based composite electrode that can achieve more than 700 cycles at a high capacity of 960 mAh/g of electrode was prepared using aqueous processing in an acidic medium. The buffering of the aqueous solution is mandatory to promote covalent bonding between Si particles and the carboxymethyl cellulose (CMC) binder. The latter is claimed to allow the formation of mechanically stronger contacts within the composite electrode in addition to the CMC bridging of the Si and carbon black particles.
引用
收藏
页码：A215 / A218
页数：4
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