Solvothermal synthesis of Li₃BO₃-coated graphite powder as an anode material for all-solid-state lithium batteries

Abstract

The solvothermal method was used to prepare 0.125 mol % Li₃BO₃-coated graphite powder as an anode material for an all-solid-state lithium battery. Scanning electron microscopy observations and electron probe microanalysis revealed the Li₃BO₃ was distributed uniformly on the graphite surface as fine particles and a film. The average crush strength of the coated graphite powder particles was higher than that of the uncoated graphite powder particles, and the standard deviation was lower. An all-solid-state lithium battery with the coated graphite powder showed a slightly higher capacity retention rate than that containing uncoated graphite powder.