LITHIUM ION SECONDARY BATTERY, DEVICE FOR RECOVERING BATTERY CAPACITY AND METHOD FOR RECOVERING BATTERY CAPACITY

摘要

Disclosed is a lithium ion secondary battery which comprises: an outer casing member that is filled with an electrolyte; a collector that is contained in the outer casing member and provided with an electrode layer which contains an active material and is electrically connected with the collector; an insulating layer that is provided on the collector; and a low potential member that is provided on the insulating layer, has a lower oxidation-reduction potential than the active material of the electrode layer, and has an ability to reduce the active material.