文献类型：期刊文献

英文题名：Colloidal Synthesis of Silicon-Carbon Composite Material for Lithium-Ion Batteries

作者：Su, Haiping[1,2];Barragan, Alejandro A.[3];Geng, Linxiao[2];Long, Donghui[1];Ling, Licheng[1];Bozhilov, Krassimir N.[4,5];Mangolini, Lorenzo[3,4];Guo, Juchen[2,4]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Meilong Rd, Shanghai 200237, Peoples R China;[2]Univ Calif Riverside, Dept Chem & Environm Engn, 900 Univ Ave, Riverside, CA 92521 USA;[3]Univ Calif Riverside, Dept Mech Engn, Riverside, CA 92521 USA;[4]Univ Calif Riverside, Mat Sci & Engn Program, Riverside, CA 92521 USA;[5]Univ Calif Riverside, Cent Facil Adv Microscopy & Microanal, Riverside, CA 92521 USA

年份：2017

卷号：56

期号：36

起止页码：10780

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20173104011132);WOS:【SCI-EXPANDED(收录号:WOS:000408267000027)】；

基金：H.S. is grateful to the Chinese Scholarship Council for the visiting fellowship. A.A.B. acknowledges the support of the "Consejo Nacional de Ciencia y Tecnologia" (CONACYT, Mexico) and The University of California Institute for Mexico and the United States (UC MEXUS). L.M. acknowledges the support of the National Science Foundation under award number 1351386 (CAREER). J.G. acknowledges the financial support from University of California, Riverside.

语种：英文

外文关键词：anodes; colloids; composite materials; emulsions; lithium-ion batteries

摘要：We report colloidal routes to synthesize silicon@-carbon composites for the first time. Surface-functionalized Si nanoparticles (SiNPs) dissolved in styrene and hexadecane are used as the dispersed phase in oil-in-water emulsions, from which yolk-shell and dual-shell hollow SiNPs@C composites are produced via polymerization and subsequent carbonization. As anode materials for Li-ion batteries, the SiNPs@C composites demonstrate excellent cycling stability and rate performance, which is ascribed to the uniform distribution of SiNPs within the carbon hosts. The Li-ion anodes composed of 46 wt% of dual-shell SiNPs@C, 46 wt% of graphite, 5 wt% of acetylene black, and 3 wt% of carboxymethyl cellulose with an areal loading higher than 3 mg cm(-2) achieve an overall specific capacity higher than 600 mAh g(-1), which is an improvement of more than 100% compared to the pure graphite anode. These new colloidal routes present a promising general method to produce viable Si-C composites for Li-ion batteries.