IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0149527
(2011-05-31)
|
등록번호 |
US-8357475
(2013-01-22)
|
발명자
/ 주소 |
- Niu, Chunming
- Chow, Calvin Y. H.
- Empedocles, Stephen A.
- Parce, J. Wallace
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
55 |
초록
▼
The present invention discloses nanowires for use in a fuel cell comprising a metal catalyst deposited on a surface of the nanowires. A membrane electrode assembly for a fuel cell is disclosed which generally comprises a proton exchange membrane, an anode electrode, and a cathode electrode, wherein
The present invention discloses nanowires for use in a fuel cell comprising a metal catalyst deposited on a surface of the nanowires. A membrane electrode assembly for a fuel cell is disclosed which generally comprises a proton exchange membrane, an anode electrode, and a cathode electrode, wherein at least one or more of the anode electrode and cathode electrode comprise an interconnected network of the catalyst supported nanowires. Methods are also disclosed for preparing a membrane electrode assembly and fuel cell based upon an interconnected network of nanowires.
대표청구항
▼
1. A composite comprising: a plurality of nanowires grown on and attached directly to a support structure comprising graphite, carbon or a carbon composite, the nanowires comprising crystalline silicon, polycrystalline silicon, amorphous silicon, or a mixture thereof; anda polymer electrolyte. 2. Th
1. A composite comprising: a plurality of nanowires grown on and attached directly to a support structure comprising graphite, carbon or a carbon composite, the nanowires comprising crystalline silicon, polycrystalline silicon, amorphous silicon, or a mixture thereof; anda polymer electrolyte. 2. The composite of claim 1, wherein the nanowires are dispersed within the polymer electrolyte. 3. The composite of claim 1, wherein a portion of the polymer electrolyte is attached to the nanowires. 4. The composite of claim 1, wherein a portion of the polymer electrolyte is directly linked to the surface of the nanowires. 5. The composite of claim 1, wherein a portion of the polymer electrolyte forms a continuous or discontinuous polymer film coating on the surface of the nanowires. 6. The composite of claim 1, wherein a portion of the polymer electrolyte is uniformly wetted on the surface of the nanowires. 7. The composite of claim 1, wherein the nanowires comprise an interconnected network of nanowires. 8. The composite of claim 7, wherein the nanowires comprise at least one surface chemical group which forms chemical cross-links between the interconnected nanowires. 9. The composite of claim 1, wherein the polymer electrolyte comprises an ionomer, a polyethylene oxide, a poly(ethylene succinate), a poly(beta-propiolactone), or a sulfonated fluoropolymer. 10. The composite of claim 1, wherein the surfaces of the nanowires are functionalized. 11. The composite of claim 10, wherein the nanowires are functionalized with at least one functional group which promotes wetting of the polymer electrolyte on the nanowires. 12. The composite of claim 10, wherein the nanowires are functionalized with at least one functional group which binds the polymer electrolyte to the nanowires. 13. The composite of claim 10, wherein the nanowires are functionalized with at least one molecule selected from the group consisting of: a short chain polymer, a sulfonated hydrocarbon, a short chain sulfonated hydrocarbon, a fluorocarbon, a short chain fluorocarbon, and a branched hydrocarbon. 14. The composite of claim 10, wherein the nanowires are functionalized with at least one functional group selected from the group consisting of: a nitric acid group, a carboxylic acid group, a hydroxyl group, an amine group, a sulfonic acid group, or a silane group. 15. The composite of claim 1, wherein the composite is porous, wherein the porous composite comprise pores disposed between the nanowires of the plurality of nanowires. 16. The composite of claim 15, wherein the polymer electrolyte is disposed within the pores of the porous composite. 17. The composite of claim 1, wherein the nanowires comprise silicon or silicon carbide. 18. The composite of claim 1, wherein the nanowires comprise a core and one or more shell layers disposed on the core. 19. The composite of claim 1, further comprising one or more metal catalyst particles attached to the nanowires, wherein the metal catalyst particles comprise gold, copper, or mixtures or alloys thereof. 20. The composite of claim 1, wherein the composite is electrically conductive. 21. An electrode comprising the composite of claim 1. 22. An anode comprising the composite of claim 1.
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