Modified SiO hierarchical structure materials with improved initial coulombic efficiency for advanced lithium-ion battery anodes.

ABSTRACT: Silicon-based anode materials are indispensable components in developing high energy density lithium-ion batteries, yet their practical application still faces great challenges, such as large volume change during the lithiation and delithiation process that causes the pulverization of silicon particles, and continuous formation and reformation of the solid electrolyte interfaces (SEI) which results in a low initial coulombic efficiency. As an endeavor to address these problems, in this study, Si/SiO/Li₂SiO₃@C structures were prepared via a facile method using SiO, pitch powder and Li₂CO₃/PVA solution followed by annealing treatment. The Si/SiO/Li₂SiO₃@C composite shows a great improvement in lithium storage where a hi

SUBMITTER: Xie L 

PROVIDER: S-EPMC9063429 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature