NONAQUEOUS ELECTROLYTIC SOLUTION BATTERY

摘要

PROBLEM TO BE SOLVED: To realize high energy density and excellent discharge characteristics of a nonaqueous electrolyte solution battery with a maximum charging voltage of 4.25 V or more and 6.9 V or less, through restraint of damage of a material of a separator as well as of degradation of floating characteristics.

SOLUTION: A wound-around electrode body 20 having a cathode 2 and an anode 3 of a strip shape wound through a separator is provided inside a battery can 1. A fluororesin layer 2c is provided at an interface between the cathode 2 and the separator 4. The fluororesin resin layer 2c is there for lowering chemical reaction between the cathode 2 and the separator 4.

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