Patent ID: 7625656

Claim:
A direct methanol fuel cell including a multiple number of connected unit cells, each composed of a fuel electrode element of a microporous carbon material, an electrolyte layer formed on the outer surface of the fuel electrode element, an air electrode layer formed on the outer surface of the electrolyte layer, wherein the fuel cell further comprises: a fuel reservoir which stores whole portion of liquid fuel by an occluding element formed of a porous material and/or bundled fibers presented capillarity, wherein the fuel reservoir is substantially totally filled with the occluding element formed of a porous material and/or bundled fibers presenting capillarity; a fuel feeder having an infiltration structure; and a fuel supply system for supplying liquid fuel from the fuel reservoir to the fuel feeder includes a valve element and/or a collector element, wherein each unit cell is connected to the fuel feeder having the infiltration structure and coupled with the fuel reservoir for storing liquid fuel, so as to supply liquid fuel thereto, wherein the fuel electrode element and the fuel feeder adjoining the fuel electrode element are formed of a porous material and/or bundled fibers presenting capillarity.