Nitrogen Plasma-Treated Core-Bishell Si@SiOx@TiO2-δ: Nanoparticles with Significantly Improved Lithium Storage Performance.

摘要: Si-based anode materials have attracted considerable attention because of their ultrahigh reversible capacity. However, poor cycling stability caused by the large volume change during cycling prevented the commercial application of Si anodes for lithium-ion batteries (LIBs). To overcome these challenges, in the present study, we designed a nitrogen plasma-treated core–bishell nanostructure where the Si nanoparticle was encapsulated into a SiO x shell and N-doped TiO2− δ shell. Here, the SiO x inside the shell and the TiO2 outside the …