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US 2006/0222926 A1Published application
Fuel Cell
AssigneeKabushiki Kaisha Toshiba
InventorYuusuke Sato
Life of this patent
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Abstract
A fuel cell is provided with: a membrane electrode assembly including an anode, a cathode and a proton-permeation membrane provided between the anode and the cathode; and a fuel supply path to supply a fuel including any of water-soluble organic matters to the anode, the fuel supply path including a back-diffusion barrier to prevent water from diffusion in a direction reverse to supply of the fuel.
Claims17
A fuel cell comprising:
- a membrane electrode assembly including an anode, a cathode, and a proton-permeation membrane provided between the anode and the cathode;
- and
- a fuel supply path to supply a fuel including any of water-soluble organic matters to the anode, the fuel supply path including a back-diffusion barrier to prevent water from diffusion in a direction reverse to supply of the fuel.
A fuel cell comprising:
- a membrane electrode assembly to generate electricity from a fuel and an air, the membrane electrode assembly including an anode catalyst and a cathode catalyst;
- a fuel supply path to conduct a fuel including water at a controlled flow velocity u;
- and
- a back-diffusion barrier to control back-diffusion of water, the back-diffusion barrier being interposed to have a length L between the fuel supply path and the anode catalyst and satisfying an equation of u>D/L, where D is a diffusion coefficient of water in the fuel.
1 more element
Dependencies are inferred from the claim text.