Nanofibrous silicon/carbon composite sheet derived from cellulose substance as free-standing lithium-ion battery anodes

Abstract

Free-standing silicon/carbon composites composed of carbon nanofibres coated with a thin silicon layer consisting of fine silicon nanocrystals were fabricated employing a cellulose substance (e.g., filter paper) as both structural scaffolds and a carbon source, which were used as self-supporting anodes for Li-ion batteries showing good areal capacity, improved cycling stability and resulted in excellent rate capability.