Microporous carbon coated silicon core/shell nanocomposite via in situpolymerization for advanced Li-ion battery anode materialElectronic supplementary information (ESI) available: Atomic composition and binding energies of elements on the surface of the Si@C core/shell nanocomposite, experimental and fading mechanism schemes, X-ray diffraction data, XPS spectra and capacities of the Si@C electrode. See DOI: 10.1039/b914959g

A microporous carbon coated core/shell Si@C nanocomposite prepared by in situpolymerization exhibits a stable capacity of over 1200 mAh g−1with 95.6% retention even after 40 cycles, which makes it a promising anode material for lithium ion batteries. [ABSTRACT FROM AUTHOR]