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US 8,133,634 B2Granted
Fuel cell with porous frit based composite proton exchange membrane
AssigneeGeorgia Tech Research Corporation
InventorsPaul A. Kohl, Jun Li
Life of this patent
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Abstract
A fuel cell includes a porous frit based composite proton exchange membrane. The pores of the porous frit are filled with a proton-conducting material.
Claims24
A fuel cell comprising:
- a proton-exchange membrane comprising a porous frit, wherein the pores of the porous frit are filled with a proton-conducting material, wherein the pores of the porous frit are about 0.9 to 10 micrometers,
- the proton-exchange membrane further comprises an anode side and a cathode side, wherein the anode side comprises an anode catalyst and an anode current collector, and wherein the cathode side comprises a cathode catalyst and a cathode current collector.
A membrane electrode assembly comprising:
- a proton-exchange membrane comprising a porous frit with an anode electrode side and a cathode electrode side opposite the anode electrode side;
- wherein the pores of the porous frit are filled with a protonconducting material;
- wherein the anode electrode side comprises an anode catalyst and a anode current conductor and a glass layer;
- and
- wherein the cathode electrode side comprises a cathode catalyst and a cathode current conductor.
2 more elements
A method of making a membrane electrode assembly comprising:
- forming a porous frit;
- filling the pores of the porous frit with a proton-conducting material wherein the pores of the porous frit are about 0.9 to 10 micrometers;
- depositing an anode catalyst on one side of the filled porous frit;
- depositing a cathode catalyst on one side of the filled porous frit opposite the anode catalyst;
- depositing a current collector on the anode catalyst;
- and
- depositing a current collector on the cathode catalyst.
4 more elements
A cylindrical direct methanol fuel cell comprising:
- a cylindrical porous frit, wherein the pores of the cylindrical porous frit are filled with a proton-conducting material;
- a glass layer deposited on the inside of the cylindrical porous frit;
- an anode catalyst deposited on the glass layer;
- a cathode catalyst deposited on the outside of the filled cylindrical porous frit;
- an anode current collector deposited on the anode catalyst, wherein the anode current collector is electrically connected to an external electric contact;
- a cathode current collector deposited on the cathode catalyst, wherein the cathode current collector is electrically connected to an external electric contact;
- and
- liquid methanol disposed within the inside of the filled cylindrical porous frit and in contact with the anode catalyst.
5 more elements
Dependencies are inferred from the claim text.