| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium secondary battery, capable of inhibiting the pulverization of a negative electrode with charging and discharging, which is superior in charge and discharge cycle characteristics and easy to produce. SOLUTION: The lithium secondary battery comprises a positive electrode 5 using as an active material a lithium contained transition metal oxide as a metal oxide, containing at least one type of transition metal element selected from Ni, Co and Mn and a negative electrode 1, using as an active material a liquid metal or a liquid alloy having a melting point of 60 degrees C or lower, containing gallium or an alloy containing gallium. The lithium secondary battery can recover its cycle characteristics after discharge, by keeping the negative electrode at a temperature higher than the melting point of the liquid metal or the liquid alloy. |
