Highly porous carbon-coated silicon nanoparticles with canyon-like surfaces as a high-performance anode material for Li-ion batteries

Abstract

Highly porous carbon-coated Si nanoparticles with canyon-like surfaces exhibit a stable cycle retention of 59.1% after 200 cycles because of sufficient free volume for expansion upon lithiation from their unique canyon-like porous surfaces and cavities formed upon MgO etching.