NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

[Problem] To provide a nonaqueous electrolyte secondary battery, which has excellent charge/discharge cycle characteristics, and wherein an inorganic particle layer is formed on an electrode plate. [Solution] A nonaqueous electrolyte secondary battery which comprises a nonaqueous electrolyte and an electrode body that is obtained by arranging a positive electrode and a negative electrode so as to face each other with a separator interposed therebetween. The surface of one of the positive electrode and the negative electrode is provided with an inorganic particle layer that is composed of inorganic material particles. The separator has a surface area difference of 0.036 m2 or more per 1 m2 between one surface and the other surface, and the separator surface having the smaller surface area faces the inorganic particle layer of the one of the positive electrode and the negative electrode.