Highly reversible and large lithium storage in mesoporous si/c nanocomposite anodes with silicon nanoparticles embedded in a carbon framework.

Zhang, Renyuan; Du, Yuanjin; Li, Dan; Shen, Dengke; Yang, Jianping; Guo, Zaiping; Liu, Hua Kun; Elzatahry, Ahmed A et al. · Adv Mater · 2014

basic_science · Level V

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Abstract

A magnesiothermic reduction approach is designed to synthesize mesoporous Si/C nanocomposites with ultrasmall, uniform silicon nanoparticles (ca. 3 nm) embedded in a rigid mesoporous carbon framework. The resultant mesoporous Si/C nanocomposites present excellent performance with high reversible capacity, good Coulombic efficiency and rate capability, and outstanding cycling stability in lithium-ion battery applications.