NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery which realizes both output characteristic and cycle characteristic by balancing the median diameter of an anode active material and the adsorbed amount of CMC in the mixture layer of an anode, and a manufacturing method therefor.SOLUTION: A lithium ion secondary battery 1 is a nonaqueous electrolyte secondary battery containing CMC 3 in the mixture layer of an anode 9, wherein the product of D50 (μm) of an anode active material 2a included in the anode 9 and a ratio (%) by weight of CMC 3 adsorbed into the anode active material 2a relative to the weight of the anode active material 2a is 2.2 to 4.2, both ends inclusive.