Titanium Monoxide-Stabilized Silicon Nanoparticles with a Litchi-like Structure as an Advanced Anode for Li-ion Batteries

• DOI: 10.1021/acsami.0c10418
• Publication Date: 2020-10-14T09:08:29Z
• Authors: Jing Hu; Qi Wang; Liang Fu; Ranjusha Rajagopalan; Yan Cui; Hong Chen; Hongyan Yuan; Yougen Tang; Haiyan Wang
• Keywords: Silicon monoxide; Monoxide

Silicon (Si) has been considered as the most potential anode material for next-generation high-energy density lithium-ion batteries (LIBs) because of its extremely high theoretical capacity. However, performance deterioration caused by volume change and low electrical conductivity active Si particles greatly limit commercial use. Here, we designed a nonstoichiometric TiOx-coated with litchi-like structure, in which Si–Ti Si–O dual bonds are expected to form between core TiOx shell. This unique structure plays major role preventing expansion improving anode. The as-prepared could exhibit excellent cycling stability after 1000 cycles at mA g–1 relatively small capacity decay rate ∼0.04% per cycle, can be comparable modified anodes references. strategy surface regulating on extended other electrodes large during LIBs achieving competitive electrochemical properties.