Fuel cell, disassembly method thereof, and separators used therein

A disassembly procedure of a fuel cell places a sloped edge of a cracking tool on a bottom of a recess. The procedure subsequently sets the bottom of the recess as a point of application, an opening edge of the recess where a flat side of the cracking tool is placed, as a point of support, and a base end of the cracking tool where a force is applied, as a point of power, and applies an external force to the point of application by the principle of leverage. A crack goes from the point of application toward a position outside electrodes of an MEA but inside a sealing members. The procedure then removes the broken separator to expose the MEA outside and cuts off an electrolyte membrane along a cut line CL outside the electrodes but inside the sealing members.