Influences of Gold, Binder and Electrolyte on Silicon Nanowire Performance in Li-Ion Batteries

被引：81

作者：

Chockla, Aaron M. ^{[1
]}

Bogart, Timothy D. ^{[1
]}

Hessel, Colin M. ^{[1
]}

Klavetter, Kyle C. ^{[1
]}

Mullins, C. Buddie ^{[1
]}

Korgel, Brian A. ^{[1
]}

机构：

[1] Univ Texas Austin, Dept Chem Engn, Texas Mat Inst, Ctr Nano & Mol Sci & Technol, Austin, TX 78712 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2012年 / 116卷 / 34期

关键词：

THIN-FILM ANODES; HIGH-CAPACITY; FLUOROETHYLENE CARBONATE; ELECTROCHEMICAL PERFORMANCE; NANOSTRUCTURED SILICON; NEGATIVE ELECTRODE; SI-NANOWIRES; LITHIUM; STORAGE;

D O I：

10.1021/jp305371v

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：

The effects of binder, electrolyte, and presence cf gold (Au) seeds on the performance of silicon (Si) nanowire anodes in Lithium (Li)-ion batteries were systematically examined. Large irreversible capacity loss, poor performance at cycle rates of C/5 and faster, and significant capacity fade were observed when excess Au was not removed from the Si nanowires. Battery stability was very poor when poly (vinylidene fluoride) (PVdF) binder and common carbonate electrolytes, ethylene carbonate, dimethyl carbonate, and diethyl carbonate were used. Respectable Li-ion battery performance was obtained with sodium alginate binder and fluoroethylene carbonate (FEC) added to the electrolyte, with capacities up to 2000 mA h g(-1) after the first 100 cycles.

引用

页码：18079 / 18086

页数：8

共 65 条

[41] Silicon Composite Electrode with High Capacity and Long Cycle Life [J].