To structure an electrochemical cell consisting of an alkaline battery cell or an ion electrochemical cell including a double collector cathode structure using the same active material of different thicknesses and improve capacity and usage efficiency of a lithium-containing cell.

The electrochemical cell is provided with is provided with an anode, a cathode structured so that a cathode material equipped as a first cathode structure having a first thickness be short-circuited with a second cathode structure with a thickness different from that of the first cathode structure and the second cathode structure made of the same cathode material as the first face the anode, and electrolyte solution activating the anode and the cathode.