Provided is a hybrid storage cell that can prevent overcharge, despite lacking an expensive protection switch or other device adapted to deal with high current or high voltage, in order to proactively prevent rupture or ignition of lithium ion storage cell...

The compact fuel cell which can efficiently perform heating and can be repeatedly used includes a solid electrolyte 3, an anode 4 that is formed on one surface of the solid electrolyte 3, a cathode 2 that is formed on another surface of the solid electroly...