SILICON COMPOSITE AND METHOD OF MANUFACTURING THE SAME, NEGATIVE ELECTRODE ACTIVE MATERIAL, AND NONAQUEOUS SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To prevent silicon particles from cohering by highly dispersing silicon particles having a particle size of 0.5-20 nm as a nanosize in a silicate matrix.SOLUTION: An amorphous silicon composite of 0.5-20 nm in particle size is prepared by forming a silicate layer between layers of layered polysilane and then decomposing the layered polysilane by heating in a non-oxidizing atmosphere.