NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery in which breakage of an electrode plate at winding up is eliminated, which is high in productivity and superior in electric characteristics, and which has high capacity.

SOLUTION: An interface of an electrode mixture and a core material of a positive electrode in which an electrode mixture layer in which a lithium complex metal oxide having nickel as an essential element is equipped as an active material is arranged on the core material is the weakest part in which peeling-off occurs when a bending stress is applied to the positive electrode. Furthermore, peeling-off strength of the interface of the electrode mixture layer and the core material which becomes the inside in winding up is constituted to be smaller than that of the interface of the outside.

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