Effect of Size and Shape on Electrochemical Performance of Nano-Silicon-Based Lithium Battery.

ABSTRACT: Silicon is a promising material for high-energy anode materials for the next generation of lithium-ion batteries. The gain in specific capacity depends highly on the quality of the Si dispersion and on the size and shape of the nano-silicon. The aim of this study is to investigate the impact of the size/shape of Si on the electrochemical performance of conventional Li-ion batteries. The scalable synthesis processes of both nanoparticles and nanowires in the 10-100 nm size range are discussed. In cycling lithium batteries, the initial specific capacity is significantly higher for nanoparticles than for nanowires. We demonstrate a linear correlation of the first Coulombic efficiency with the specific area of the Si materials. In long-term cycling tests, the electrochemical performance of the

SUBMITTER: Keller C 

PROVIDER: S-EPMC7912472 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature