NEGATIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, NEGATIVE ELECTRODE FOR SECONDARY BATTERY, SECONDARY BATTERY, AND Si-OXIDE SOLID ELECTROLYTE COMPLEX

摘要

PROBLEM TO BE SOLVED: To provide: a negative electrode active material for a secondary battery, capable of improving output characteristics; a method for producing the negative electrode active material for a secondary battery; a negative electrode for a secondary battery; a secondary battery; and an Si-oxide solid electrolyte complex.SOLUTION: An Si-oxide solid electrolyte complex which comprises a matrix comprising an amorphous or low crystalline oxide solid electrolyte and Si nanoparticles dispersed in the matrix is used as a negative electrode active material.