A scalable synthesis for a large amount of silicon nanoparticles (<10 nm) embedded within hollow carbon spheres as a high-performance anode for Li-ion batteries.
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.
