Micro-sized silicon-carbon composites composed of carbon-coated sub-10 nm Si primary particles as high-performance anode materials for lithium-ion batteries

Jiangxuan Song, Shuru Chen, Mingjiong Zhou, Terrence Xu, Dongping Lv, Mikhail L. Gordin, Tianjun Long, Michael Melnyk, Donghai Wang

Research output: Contribution to journalArticlepeer-review

139 Scopus citations

Abstract

We report the synthesis of micro-sized silicon-carbon (Si-C) composites, which simultaneously possess primary sub-10 nm Si particles and secondary micro-sized aggregation coated with carbon. Because of this unique structure, the as-synthesized Si-C composite anode can deliver excellent cycling stability with a high reversible specific capacity (∼1600 mA h g-1) within 150 cycles at 400 mA g-1. Moreover, a high volumetric capacity of ∼1088 mA h cm-3 was demonstrated by using this composite cathode, which is 5 times higher than that of commercially available nano-silicon based anodes.

Original languageEnglish (US)
Pages (from-to)1257-1262
Number of pages6
JournalJournal of Materials Chemistry A
Volume2
Issue number5
DOIs
StatePublished - Feb 7 2014

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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