The present invention relates to SiC nanostructures, including SiC nanopowder, SiC nanowires, and composites of SiC nanopowder and nanowires, which can be used as catalyst supports in membrane electrode assemblies and in fuel cells. The present invention also relates to composite catalyst supports c
The present invention relates to SiC nanostructures, including SiC nanopowder, SiC nanowires, and composites of SiC nanopowder and nanowires, which can be used as catalyst supports in membrane electrode assemblies and in fuel cells. The present invention also relates to composite catalyst supports comprising nanopowder and one or more inorganic nanowires for a membrane electrode assembly.
대표청구항▼
1. A catalyst support for a membrane electrode assembly of a fuel cell, comprising one or more SiC nanostructures, wherein the SiC nanostructures have at least one metal catalyst disposed thereon, wherein the SiC nanostructures comprise SiC nanopowder, wherein the SiC nanopowder is cross-linked by g
1. A catalyst support for a membrane electrode assembly of a fuel cell, comprising one or more SiC nanostructures, wherein the SiC nanostructures have at least one metal catalyst disposed thereon, wherein the SiC nanostructures comprise SiC nanopowder, wherein the SiC nanopowder is cross-linked by graphene sheets. 2. The catalyst support of claim 1, further comprising one or more nanowires comprising RuO2, SiC, GaN, TiO2, SnO2, WCx, MoCx, ZrC, WNx, or MoNx. 3. The catalyst support of claim 1, wherein the catalyst metal comprises one or more of Pt, Au, Pd, Ru, Re, Rh, Os, Ir, Fe, Co, Ni, Cu, Ag, V, Cr, Mo, W, and alloys or mixtures thereof. 4. The catalyst support of claim 1, wherein the catalyst metal comprises nanoparticles having a diameter less than about 10 nm. 5. The catalyst support of claim 1, further comprising a proton conducting polymer in contact with the SiC nanopowder. 6. The catalyst support of claim 1, wherein the membrane electrode assembly is a component in a hydrogen fuel cell or a direct methanol fuel cell (DMFC). 7. The catalyst support of claim 1, wherein the catalyst metal comprises PtRu nanoparticles. 8. A catalyst support for a membrane electrode assembly of a fuel cell, comprising one or more SiC nanostructures, wherein the SiC nanostructures have at least one metal catalyst disposed thereon, wherein the SiC nanostructures comprise a composite of SiC nanopowder and SiC nanowires, and wherein the nanopowder and the nanowires are cross-linked by graphene sheets. 9. A catalyst support for a membrane electrode assembly of a fuel cell comprising a composite of SiC nanopowder and inorganic nanowires, wherein at least one of the SiC nanopowder and the inorganic nanowires have at least one metal catalyst disposed thereon, and wherein the SiC nanopowder and the inorganic nanowires are cross-linked by graphene sheets. 10. The catalyst support of claim 9, wherein the nanowires comprise RuO2, SiC, GaN, TiO2, SnO2, WCx, MoCx, ZrC, WNx, or MoNx nanowires. 11. The catalyst support of claim 9, wherein the catalyst metal comprises one or more of Pt, Au, Pd, Ru, Re, Rh, as, Ir, Fe, Co, Ni, Cu, Ag, V, Cr, Mo, W, and alloys or mixtures thereof. 12. The catalyst support of claim 9, wherein the catalyst metal comprises nanoparticles having a diameter less than about 10 nm. 13. The catalyst support of claim 9, further comprising a proton conducting polymer in contact with the SiC nanopowder and nanowires. 14. The catalyst support of claim 9, wherein the membrane electrode assembly is a component in a hydrogen fuel cell or a direct methanol fuel cell (DMFC). 15. The catalyst support of claim 9, wherein the catalyst metal comprises Pt nanoparticles. 16. An electrochemical cell comprising: a plurality of nanowires grown on and attached directly to a support structure comprising graphite, carbon, or a carbon composite, wherein the nanowires comprise silicon, and the nanowires are cross-linked by graphene sheets. 17. The electrochemical cell of claim 16, wherein the electrochemical cell is a fuel cell. 18. The electrochemical cell of claim 16, wherein the electrochemical cell is a battery. 19. The electrochemical cell of claim 18, further comprising: an anode that comprises the support structure. 20. The electrochemical cell of claim 18, further comprising: a cathode that comprises the support structure. 21. The electrochemical cell of claim 16, wherein an outer shell of the nanowires comprises carbon. 22. The electrochemical cell of claim 16, wherein the electrochemical cell further comprises an electrolyte. 23. The electrochemical cell of claim 22, wherein the electrolyte comprises a polymer. 24. The electrochemical cell of claim 23, wherein the polymer electrolyte comprises polyethylene oxide. 25. The electrochemical cell of claim 22, wherein the electrolyte comprises an organic additive. 26. The electrochemical cell of claim 16, wherein the support structure comprises one or more SiC nanostructures, wherein the SiC nanostructures have at least one metal catalyst disposed thereon, wherein the SiC nanostructures comprise SiC nanopowder, wherein the SiC nanopowder is cross-linked by graphene sheets. 27. The electrochemical cell of claim 26, wherein the support structure further comprises one or more nanowires further comprising RuO2, SiC, GaN, TiO2, SnO2, WCx, MoCx, ZrC, WNx, or MoNx. 28. The electrochemical cell of claim 26, wherein the catalyst metal comprises one or more of Pt, Au, Pd, Ru, Re, Rh, Os, Ir, Fe, Co, Ni, Cu, Ag, V, Cr, Mo, W, and alloys or mixtures thereof. 29. The electrochemical cell of claim 26, wherein the catalyst metal comprises nanoparticles having a diameter less than about 10 μm. 30. The electrochemical cell of claim 26, wherein the catalyst metal comprises Pt:Ru nanoparticles. 31. The electrochemical cell of claim 16, wherein the nanowires comprise SiC nanowires.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (69)
Tatsuo Umeno JP; Kenji Fukuda JP; Tadanori Tsunawaki JP; Takashi Hiruta JP; Yoshinori Yasumoto JP; Youichiro Hara JP; Osamu Matsunaga JP, Anode material for lithium secondary battery, lithium secondary battery using said anode material, and method for charging of said secondary battery.
Debe Mark K. ; Haugen Gregory M. ; Steinbach Andrew J. ; Thomas ; III John H. ; Ziegler Raymond J., Catalyst for membrane electrode assembly and method of making.
Lee, James Weifu; Lowndes, Douglas H.; Merkulov, Vladimir I.; Eres, Gyula; Wei, Yayi; Greenbaum, Elias; Lee, Ida, Catalyst-induced growth of carbon nanotubes on tips of cantilevers and nanowires.
Choi, Kyung Moon; Jin, Sungho; Kochanski, Gregory Peter; Zhu, Wei, Field emitting device comprising metallized nanostructures and method for making the same.
Suenaga,Seiichi; Yonetsu,Maki; Tomimatsu,Norihiro; Ohzu,Hideyuki; Goto,Yasuhiro; Nakano,Yoshihiko, Fuel cell, electrode for fuel cell and a method of manufacturing the same.
Weiss Shimon ; Bruchez ; Jr. Marcel ; Alivisatos Paul, Organo Luminescent semiconductor nanocrystal probes for biological applications and process for making and using such p.
Dubrow, Robert; Casillas, Carlos Guillermo; Freeman, William P.; Goldman, Jay L.; Hardev, Veeral Dilip; Leon, Francisco; Niu, Chunming; Pereira, Cheri X. Y., Porous substrates, articles, systems and compositions comprising nanofibers and methods of their use and production.
Alivisatos A. Paul ; Peng Xiaogang ; Manna Liberato,ITX, Process for forming shaped group II-VI semiconductor nanocrystals, and product formed using process.
Alivisatos A. Paul ; Peng Xiaogang ; Manna Liberato,ITX, Process for forming shaped group III-V semiconductor nanocrystals, and product formed using process.
Pan,Yaoling; Duan,Xiangfeng; Dubrow,Robert S.; Goldman,Jay L.; Mostarshed,Shahriar; Niu,Chunming; Romano,Linda T.; Stumbo,Dave, Systems and methods for nanowire growth and harvesting.
Choi, Sung-Yool; Paek, Mun-Cheol; Cho, Kyoung-Ik; Hur, Jeen; Han, Gi-Pyung, Triode-type field emission device having field emitter composed of emitter tips with diameter of nanometers and method for fabricating the same.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.