A Critical Size of Silicon Nano-Anodes for Lithium Rechargeable Batteries

被引：873
|
作者：
Kim, Hyejung [1 ,2 ]
Seo, Minho [1 ,2 ]
Park, Mi-Hee [1 ,2 ]
Cho, Jaephil [1 ,2 ]
机构：
[1] Ulsan Natl Inst Sci & Technol, Sch Energy Engn, Ulsan 689798, South Korea
[2] Ulsan Natl Inst Sci & Technol, Converging Res Ctr Innovat Battery Technol, Ulsan 689798, South Korea
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2010年 / 49卷 / 12期
关键词：
batteries; carbon; electrochemistry; lithium; silicon; STORAGE; PHOTOLUMINESCENCE; NANOPARTICLES; ELECTRODE;
D O I：
10.1002/anie.200906287
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Well-dispersed Si nanocrystals with sizes of approximately 5, 10, and 20 nm were prepared in reverse micelles at high pressure and 380°C and investigated as anode materials for lithium batteries. The 10 nm sized nanocrystals show a first charge capacity y of 3380 mAhg-1 and the highest capacity retention of 81 % after 40 cycles, which can be increased to 96% by carbon coating (see picture). "Chemical Equation Presented". © 2010 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码：2146 / 2149
页数：4
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