LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To increase capacitance of a lithium secondary battery. SOLUTION: A lithium secondary battery is composed of a sheet-like positive electrode 1 formed by applying a positive electrode mix to a positive electrode current collecting body, a sheet like negative electrode 2 which is formed by applying a negative electrode mix to a negative electrode current collecting body and can store and release lithium and a separator 3 interposed between the positive electrode 1 and the negative electrode 2. A moving distance of an ion of a peripheral edge part A1 of the positive electrode 1 and a positive electrode part B1 opposed to the vicinity of a negative electrode lead plate 5 of the negative electrode 2 is restricted more than a moving distance of an ion of a positive electrode part except those.