WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO2005122298) FUEL CELL WITH THERMAL CONDUCTANCE OF CATHODE GREATER THAN ANODE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2005/122298    International Application No.:    PCT/US2005/019145
Publication Date: 22.12.2005 International Filing Date: 31.05.2005
IPC:
H01M 4/86 (2006.01), H01M 8/10 (2006.01), H01M 4/94 (2006.01), H01M 8/02 (2006.01)
Applicants: UTC Fuel Cells, LLC [US/US]; 195 Governor's Highway, South Windsor, CT 06074 (US) (For All Designated States Except US)
Inventors: BREAULT, Richard, D.; (US)
Agent: GATHY, Andrew, D.; Assistant IP Counsel, UTC Fuel Cells, LLC, 195 Governor's Highway, South Windsor, CT 06074 (US)
Priority Data:
10/859,014 02.06.2004 US
Title (EN) FUEL CELL WITH THERMAL CONDUCTANCE OF CATHODE GREATER THAN ANODE
(FR) CELLULE DE PILE A COMBUSTIBLE DONT LA CONDUCTANCE THERMIQUE DE LA CATHODE EST SUPERIEURE A CELLE DE L'ANODE
Abstract: front page image
(EN)In a fuel cell for a fuel cell power plant having a PEM (9), a cathode comprising at least a catalyst (10) and a support substrate (17), possibly with a diffusion layer (16), on one side of the PEM, and an anode comprising at least an anode support substrate (14) and an anode catalyst (11) on the opposite side of the PEM, and a porous water transport plate having reactant gas flow field channels (31, 32) (21, 28) adjacent to each of said support substrates as well as water flow channels (22) in at least one of said water transport plates, the thermal conductance of the cathode is less than about one-half of the thermal conductance of the anode, and preferably less than one-quarter of the thermal conductance of the anode, to promote flow of water from the cathode to the anode and to the adjacent water transport plate, obviating the need, in some cases, for water or reactant pressure pumps.
(FR)L'invention porte sur une cellule de pile à combustible à membrane échangeuse de protons (PEM)(9) comportant: une cathode comprenant au moins un catalyseur (10), un substrat support (17), et éventuellement une couche de diffusion (16) située d'un des côtés de la PEM; une anode comprenant au moins un substrat support (14), un catalyseur (11) situé de l'autre côté de la PEM; et au moins une plaque poreuse de transport d'eau percée de canaux (31, 32) (21, 28) d'écoulement du gaz réactif, voisins de chacun des substrats supports, et de canaux (22) d'écoulement d'eau percés dans l'une au moins des plaques de transport d'eau. La conductance thermique de la cathode est de moins de la moitié, ou mieux du quart, de celle de l'anode, de manière à favoriser la circulation de l'eau de la cathode vers l'anode et vers les plaques de transport d'eau voisines, ce qui dans certains cas permet d'éliminer la nécessité de pompes à eau ou à réactif.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)