Biofuel cell and electronic device
View Patent ↗A small and high-density biofuel cell capable of easily supplying fuel; and an electronic apparatus are provided. The biofuel cell is formed using a stack in which two power generating bodies that include at least a pair of electrodes and a separator are stacked through a gas diffusion layer through which only gas is permeable, the electrodes forming an anode and a cathode and having at least one surface on which an oxidoreductase is present, the separator being arranged between the electrodes and including a proton permeable membrane. In addition, cathode-side surfaces of the respective power generating bodies of the stack are arranged in contact with the gas diffusion layer. This biofuel cell is mounted on the electronic apparatus.
1. A biofuel cell, comprising:
a plurality of power generating bodies that include at least a pair of electrodes and a separator, the pair of electrodes forming an anode and a cathode and having at least one surface on which an oxidoreductase is present, the separator being arranged between the pair of electrodes and including a proton permeable membrane; and
a gas diffusion layer that is arranged in contact with cathode-side surfaces of the plurality of power generating bodies and through which only gas is permeable, wherein:
a plurality of cylindrical stacks of the plurality of power generating bodies and the gas diffusion layer are concentrically arranged in a fuel tank to separate a fuel solution; and
the gas diffusion layer is between and abuts each of a first power generating body of the plurality of power generating bodies, and a second power generating body of the plurality of power generating bodies.
2. The biofuel cell according to claim 1 ,
wherein the respective plurality of power generating bodies are connected in series, and
a fuel solution in a fuel tank is mutually separated by a stack of the plurality of power generating bodies and the gas diffusion layer.
3. The biofuel cell according to claim 2 ,
wherein a stack of the plurality of power generating bodies and the gas diffusion layer is detachable from the fuel tank.
4. The biofuel cell according to claim 1 ,
wherein a plurality of stacks of the plurality of power generating bodies and the gas diffusion layer are connected through a cover of a fuel tank.
5. The biofuel cell according to claim 1 ,
wherein the gas diffusion layer is formed of carbon paper, carbon cloth, or a non-woven or porous metal material.
6. An electronic apparatus, comprising
a biofuel cell,
wherein the biofuel cell includes:
a plurality of power generating bodies that include at least a pair of electrodes and a separator, the pair of electrodes forming an anode and a cathode and having at least one surface on which an oxidoreductase is present, the separator being arranged between the pair of electrodes and including a proton permeable membrane;
a gas diffusion layer that is arranged in contact with cathode-side surfaces of the plurality of power generating bodies and through which only gas is permeable, in which the gas diffusion layer is between and abuts each of a first power generating body of the plurality of power generating bodies, and a second power generating body of the plurality of power generating bodies; and
a plurality of cylindrical stacks of the plurality of power generating bodies and the gas diffusion layer are concentrically arranged in a fuel tank to separate a fuel solution.