NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES AND NEGATIVE ELECTRODE

摘要

Each negative electrode active material particle according to the present invention comprises a composite particle that contains a silicon particle and a lithium silicate phase represented by LixSiOy (wherein 0 < x ≤ 4 and 0 < y ≤ 4) and a surface layer that is formed on the surface of the composite particle; and the surface layer contains a silane coupling agent.