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

Autor:	Shuru Chen, Jiangxuan Song, Donghai Wang, Mikhail L. Gordin, Terrence Xu, Dongping Lv, Mingjiong Zhou, Michael Melnyk, Tianjun Long
Rok vydání:	2014
Předmět:	Materials science Silicon Renewable Energy Sustainability and the Environment Composite number chemistry.chemical_element General Chemistry Anode Ion chemistry Carbon composites General Materials Science Carbon coating Lithium Composite material Carbon
Zdroj:	J. Mater. Chem. A. 2:1257-1262
ISSN:	2050-7496 2050-7488
DOI:	10.1039/c3ta14100d
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0ec5c6bb45b2428e8184dd08f6868e66 https://doi.org/10.1039/c3ta14100d Zobrazit plný text záznamu