Patent ID: 8906561

Claim:
A bio-fuel cell comprising: at least one bio-fuel cell element comprising: a membrane electrode assembly comprising: an anode and a cathode, the cathode comprising a catalyst layer comprising a plurality of tube carriers having electron conductibility, a plurality of catalyst particles uniformly adsorbed on a wall of each of the plurality of tube carriers, and a proton conductor filled in each of the plurality of tube carriers, the plurality of tube carriers cooperatively defining a plurality of reaction gas passages for transferring reaction gas to surfaces of the plurality of catalyst particles; and a proton exchange membrane sandwiched between the anode and the cathode, a first end of each of the plurality of tube carriers being connected with the proton exchange membrane, the proton exchange membrane being in contact with the proton conductor filled in each of the plurality of tube carriers; a guide plate disposed on a surface of the cathode away from the proton exchange membrane; and an anode container filled with biofuel, wherein the anode is immersed in the biofuel of the anode container.