Fuel cell and method of manufacturing same

Patent metadata

Field	Value
Publication number	US-9698429-B2
Application number	US-201414904305-A
Country	US
Kind code	B2
Filing date	Oct 31, 2014
Priority date	Nov 1, 2013
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

The present application relates to a fuel cell and a method of manufacturing the same.

First claim

The invention claimed is:

1. A fuel cell comprising:
a cathode;
an anode; and
an electrolyte membrane provided between the cathode and the anode,
wherein at least one of the cathode and the anode includes a carrier-metal nanoparticle complex where a metal nanoparticle is carried in a carrier, the metal nanoparticle including a first metal, a second metal, and one or more cavities, wherein the one or more cavities extend from an external surface of the metal nanoparticle to an internal region of the metal nanoparticle,
wherein the carrier-metal nanoparticle complex is manufactured by a method including:
forming a solution including a solvent, a first metal salt providing a first metal ion or an atomic group ion including the first metal ion in the solvent, a second metal salt providing a second metal ion or an atomic group ion including the second metal ion in the solvent, a first surfactant forming a micelle in the solvent, and a second surfactant forming the micelle together with the first surfactant in the solvent;
adding a carrier to the solution to perform agitation; and
adding a reducing agent to the solution to form the metal nanoparticle on the carrier.

2. The fuel cell of claim 1 , wherein at least one of the one or more cavities passes through the metal nanoparticle.

3. The fuel cell of claim 1 , wherein the one or more cavities have a cylindrical shape or a bowl shape.

4. The fuel cell of claim 1 , wherein a particle diameter of the metal nanoparticle is 1 nm or more and 30 nm or less.

5. The fuel cell of claim 1 , wherein a particle diameter of the metal nanoparticle is 1 nm or more and 20 nm or less.

6. The fuel cell of claim 1 , wherein a particle diameter of the metal nanoparticle is 1 nm or more and 12 nm or less.

7. The fuel cell of claim 1 , wherein a particle diameter of the metal nanoparticle is 1 nm or more and 6 nm or less.

8. The fuel cell of claim 1 , wherein a diameter of the one or more cavities is 5% or more and 30% or less of a particle diameter of the metal nanoparticle.

9. The fuel cell of claim 1 , wherein a particle diameter of the metal nanoparticle is in a range of 80% to 120% of an average particle diameter of the metal nanoparticles.

10. The fuel cell of claim 1 , wherein the metal nanoparticle has a sphere shape.

11. The fuel cell of claim 1 , wherein the metal nanoparticle includes an alloy of the first metal and the second metal.

12. The fuel cell of claim 1 , wherein an atomic percentage ratio of the first metal and the second metal is 1:5 to 10:1.

13. The fuel cell of claim 1 , wherein the first metal and the second metal are each independently at least one selected from the group consisting of a metal, a metalloid, a lanthanum metal, and an actinium metal belonging to Group III to XV on a periodic table.

14. The fuel cell of claim 1 , wherein the first metal and the second metal are each independently at least one selected from the group consisting of platinum (Pt); ruthenium (Ru); rhodium (Rh); molybdenum (Mo); osmium (Os); iridium (Ir); rhenium (Re); palladium (Pd); vanadium (V); tungsten (W); cobalt (Co); iron (Fe); selenium (Se); nickel (Ni); bismuth (Bi); tin (Sn); chromium (Cr); titanium (Ti); gold (Au); cerium (Ce); silver (Ag); and copper (Cu).

15. The fuel cell of claim 1 , wherein the carrier is a carbon-based material.

16. The fuel cell of claim 1 , wherein a carrying ratio of the metal nanoparticle to the carrier is 10 wt % to 70 wt %.

17. The fuel cell of claim 1 , wherein the first metal or the second metal are different from each other, and the first metal or the second metal is nickel.

18. The fuel cell of claim 1 , wherein the first metal or the second metal are different from each other, and the first metal or the second metal is platinum.

19. The fuel cell of claim 1 , wherein the first metal is nickel and the second metal is platinum.

20. A method of manufacturing a fuel cell, comprising:
preparing an electrolyte membrane;
forming a cathode on one surface of the electrolyte membrane; and
forming an anode on the other surface of the electrolyte membrane,
wherein at least one of the cathode and the anode includes a carrier-metal nanoparticle complex where a metal nanoparticle is carried in a carrier, the metal nanoparticle including a first metal, a second metal, and one or more cavities, wherein the one or more cavities extend from an external surface of the metal nanoparticle to an internal region of the metal nanoparticle,
wherein at least one of the forming of the cathode and the forming of the anode further includes manufacturing the carrier-metal nanoparticle complex, and
the manufacturing of the carrier-metal nanoparticle complex includes:
forming a solution including a solvent, a first metal salt providing a first metal ion or an atomic group ion including the first metal ion in the solvent, a second metal salt providing a second metal ion or an atomic group ion including the second metal ion in the solvent, a first surfactant forming a micelle in the solvent, and a second surfactant forming the micelle together with the first surfactant in the solvent;
adding a carrier to the solution to perform agitation; and
adding a reducing agent to the solution to form the metal nanoparticle on the carrier.

Assignees

• Lg Chemical Ltd

Inventors

• Kim Kwanghyun
• Hwang Gyo Hyun
• Kim Sang Hoon
• Cho Jun Yeon

Classifications

• H01M8/10

  Fuel cells with solid electrolytes · CPC title

• H01M4/9075

  Catalytic material supported on carriers, e.g. powder carriers (H01M4/8807, H01M4/881, H01M4/8814, H01M4/925 take precedence) · CPC title

• H01M4/9041

  Metals or alloys (H01M4/92 takes precedence) · CPC title

• B82B3/00

  Manufacture or treatment of nanostructures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units · CPC title

• H01M8/1016

  characterised by the electrolyte material (H01M8/12 takes precedence) · CPC title