NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery which has a high discharging capacity density and can improve charge/discharge cycle characteristics, and to provide its manufacturing method.

SOLUTION: The battery is provided with a cathode active substance containing a sodium transition metal oxide and a lithium transition metal oxide or a cathode active substance containing a sodium transition metal oxide with lithium added (hereinafter called as a lithium-added sodium transition metal oxide) and a lithium transition metal oxide. In these cathode active substances, the sodium transition metal oxide or the lithium-added sodium transition metal oxide and the lithium transition metal oxide are mixed, or the lithium transition metal oxide is coated with the sodium transition metal oxide or the lithium-added sodium transition metal oxide. The sodium transition metal oxide and the lithium-added sodium transition metal oxide are laminated compounds containing sodium.

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