Abstract
Crystalline silicon has been deposited onto the surface of mesocarbon microbeads (MCMB) particles by chemical vapor deposition (CVD) using silane as the precursor gas. The microstructure of the Si-coated MCMB was characterized by Raman spectroscopy, X-ray diffraction (XRD) and field emission scanning electron microscope (FESEM) equipped with energy dispersive X-ray (EDX) analysis. It was found that the Si coated on the surface of MCMB particles exists in the crystalline state, and Si-coated MCMB exhibits increased reversible capacity compared to pristine MCMB without sacrificing its cycling behavior. As a result, Si-coated MCMB emerges as a promising anode material for secondary lithium-ion batteries.
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