POSS-Derived Synthesis and Full Life Structural Analysis of Si@C as Anode Material in Lithium Ion Battery.

ABSTRACT: Polyhedral oligomeric silsesquioxane (POSS)-derived Si@C anode material is prepared by the copolymerization of octavinyl-polyhedral oligomeric silsesquioxane (octavinyl-POSS) and styrene. Octavinyl-polyhedral oligomeric silsesquioxane has an inorganic core (-Si₈O₁₂) and an organic vinyl shell. Carbonization of the core-shell structured organic-inorganic hybrid precursor results in the formation of carbon protected Si-based anode material applicable for lithium ion battery. The initial discharge capacity of the battery based on the as-obtained Si@C material Si reaches 1500 mAh g^-1. After 550 charge-discharge cycles, a high capacity of 1430 mAh g^-1 was maintained. A combined XRD, XPS and TEM analysis was performed to investigate the variation of the discharge

SUBMITTER: Bai Z 

PROVIDER: S-EPMC6523519 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature