Proton-exchange fuel cell

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Topic: Proton-exchange fuel cell

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In the News (Fri 25 Dec 09)

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	United States Patent Application: 0020142205
		The proton exchange membrane fuel cell stack of claim 1, wherein the fuel flow field comprises an orthogonal flow field in contact with the catalyzed membrane and a parallel flow field in contact with the orthogonal flow field, and the parallel flow field has a greater porosity than the orthogonal flow field.
		The proton exchange membrane fuel cell stack of claim, wherein the edges of each cell unit are sealed by an external sealing layer to form a single assembly of the cell unit.
		[0004] Proton exchange membrane fuel cells (PEMFCs) include three constituents forming a basic unit of membrane and electrode assembly (MEA): an anode electrode for oxidation reaction, a cathode electrode for reduction reaction, and an electrolyte for ion transportation.
	appft1.uspto.gov /netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=/netahtml/PTO/search-adv.html&r=1&f=G&l=50&d=PG01&p=1&S1=20020142205&OS=20020142205&RS=20020142205

	Welcome to Mechanical Engineering - FACULTY - Frano Barbir
		In these positions, he assembled and led research teams covering all areas of Proton Exchange Membrane fuel cell technology including electrochemistry, materials, heat transfer and fluid mechanics.
		He is co-inventor on several fuel cell related patents, and has authored or co-authored more than 100 publications, mostly on fuel cells and hydrogen energy that appear in scientific journals, books, encyclopedia and conference proceedings.
		He led teams that developed novel fuel cell stacks (from 1 to 5 kW) with emphasis on low cost manufacturing, and applied them in a variety of working fuel cell systems, including 5 fuel cell powered vehicles.
	www.engr.uconn.edu /me/me_barbir.htm

	Lynntech Products: PEM Fuel Cells
		A proton exchange membrane (PEM) fuel cell is a device capable of generating electricity directly by means of two electrochemical reactions which take place at the proton exchange membrane/catalyst interface at low temperatures (<80° C).
		The key step in the operation of most fuel cells is the electrochemical oxidation of hydrogen to produce water, as shown in the drawing.
		If you would like to be notified when commercial fuel cells become available, or if your organization would like to participate in the development of this technology, please contact us.
	www.lynntech.com /licensing/pem_fuelcell/index.shtml

	SERC: Fuel Cells
		A PEM (Proton Exchange Membrane, also called Polymer Electrolyte Membrane) fuel cell uses a simple chemical reaction to combine hydrogen and oxygen into water, producing electric current in the process.
		In a fuel cell, hydrogen's natural tendency to oxidize and form water produces electricity and useful work.
		As a result, the hydrogen ions flow directly through the proton exchange membrane to the cathode, while the electrons flow through an external circuit.
	www.humboldt.edu /~serc/fc.html

	Part 2 of 3. Electrochemistry FAQ.
		http://www.grc.org/programs/2005/anachem.htm Fuel Cell Gordon Research Conference, Smithfield, RI, July 17-22, 2005.
		http://www.knowledgepress.com/events/6301210_p.pdf (9.) Popular science information Fuel cell facility model for hobbyists G. Furukawa, Nuts & Volts, Vol.
		http://www.grc.org/programs/2005/elecchem.htm Lucerne Fuel Cell Forum 2005 Lucerne, Switzerland, July 4-8, 2005.
	www.talkaboutscience.com /group/sci.chem.electrochem/messages/14561.html

	DoD Fuel Cell - Fuel Cell Descriptions
		When hydrocarbon fuels are to be used or air is to be used as the oxidant, higher temperature fuel cells, the MCFC, the SOFC, and to some extent the PAFC, have an efficiency advantage over the PEFC at the system level.
		At the fuel cell stack level, electrical efficiency is determined by the voltage at which the fuel cell is operated.
		As the PEFC operates at about 175°F (80°C), the water is produced as liquid water and is carried out of the fuel cell by excess oxidant flow.
	dodfuelcell.cecer.army.mil /proton.html

	DoD Fuel Cell - Fuel Cell Descriptions
		Fuel Cells generate electricity through an electrochemical process in which the energy stored in a fuel is converted directly into DC electricity.
		Fuel cells consist of an electrolyte material which is sandwiched in between two thin electrodes (porous anode and cathode).
		All fuel cells have the same basic operating principle.
	dodfuelcell.cecer.army.mil /fcdescriptions.html

	NanoInvestorNews - Pacific Fuel Cell Corp. Announces Development of Proton Exchange Membrane Fuel Cell with Carbon Nanotube-Based Electrodes
		Pacific Fuel Cell Corp. expects that the use of multi-walled carbon nanotubes as a platinum support for proton exchange membrane fuel cells will reduce the manufacturing cost of fuel cells through an increased utilization of platinum.
		Professor Yan, a principal researcher for Pacific Fuel Cell Corp., received his Ph.D. from the California Institute of Technology and is a leading authority on high temperature proton conductive membranes and nanostructured electrodes.
		TUSTIN, Calif.--(BUSINESS WIRE)--Nov. 11, 2003--Pacific Fuel Cell Corp. [profile] is pleased to announce that a research team headed by Professor Yushan Yan of the University of California at Riverside [profile], under a contract with PFCE, has successfully developed a fuel cell using carbon nanotube-based electrodes.
	www.nanoinvestornews.com /modules.php?name=News&file=article&sid=2045

	High Temperature Proton Exchange Membrane Fuel Cells
		Lvov, S.; Allcock, H. Using a new class of proton exchange membranes, Lvov and his associates at Penn State will develop a high temperature proton exchange membrane fuel cell.
		Development of High Temperature Proton Exchange Membrane Fuel Cells
		Improvements in proton conductivity, electrosmotic drag water, thermal stability, and mechanical strength and the development of technologies for preparation of the membrane electrode assemblies using polyphosphazene membranes will allow the fuel cell to operate at elevated temperatures, perhaps as high as 250
	www.engr.psu.edu /ce/enve/h2e/Pub/Lvov_et_al_1.htm

	Fuel cell - Wikipedia, the free encyclopedia
		In the archetypal example of a hydrogen/oxygen proton-exchange membrane (or "polymer electrolyte") fuel cell (PEMFC), a proton-conducting polymer membrane separates the anode and cathode sides.
		Fuel cells are often considered to be very attractive in modern applications for their high efficiency and ideally emission-free use, in contrast to currently more common fuels such as methane or natural gas that generate carbon dioxide.
		Typical reactants used in a fuel cell are hydrogen on the anode side and oxygen on the cathode side (a hydrogen cell).
	en.wikipedia.org /wiki/Fuel_cells

	Types - Proton Exchange Membrane Fuel Cells
		Proton Exchange Membrane Fuel Cells (PEMFC) are believed to be the best type of fuel cell as the vehicular power source to eventually replace the gasoline and diesel internal combustion engines.
		The fuel for the PEMFC is hydrogen and the charge carrier is the hydrogen ion (proton).
		PEM fuel cells use a solid polymer membrane (a thin plastic film) as the electrolyte.
	www.fctec.com /fctec_types_pem.asp

	DuPont.com: DuPont Forms Fuel Cell Business
		DuPont is focusing on proton exchange membrane (PEM) fuel cells used in portable, stationary and transportation applications.
		DuPont opened a multi-million-dollar fuel cell technology center in 2000 near its headquarters in Wilmington, Del., that is focusing on materials technology and applications development.
		The formation of DuPont Fuel Cells provides the business platform from which to develop and commercialize technologies from the company's Fluoroproducts, iTechnologies, Engineering Polymers, Corporate Research and Development and DuPont Canada organizations.
	www.dupont.com /corp/news/releases/2001/nr02_08_01.html

	UAF Newsroom: PEM Fuel Cell Laboratory Demonstration
		Proton exchange membrane fuel cells use a polymer electrolyte, similar to Gore-TEX raingear.
		A one-kilowatt proton exchange membrane fuel cell will be delivered to the University of Alaska Fairbanks Energy Center next week.
		The fuel cell system, built by Schatz Energy Research Center at Humboldt State University in Arcata, Calif., includes a methanol reformer device which converts methanol into hydrogen for use in the fuel cell.
	www.uaf.edu /news/a_news/20031016105747.html

	Start up of proton exchange membrane fuel cell (US6127056)
		In a fuel cell having a proton exchange membrane electrolyte and process oxidant channel, fed through an oxidant inlet manifold, in which oxidant is transported to the cathode side of the fuel cell, a method of warming the fuel cell during start up of operation, comprising:
		A proton exchange membrane fuel cell has a noble metal or noble metal alloy catalyst 15 disposed in its air inlet manifold 13.
		During start up, a fuel cell is warmed to operating temperature by introducing a small amount of hydrogen into a flow of air to the air inlet 12 of the fuel cell where they react with the catalyst to produce heat at subflame temperatures.
	www.delphion.com /details?pn=US06127056__

	Proton Exchange Membrane Fuel Cell (PEMFC) - NFCRC Tutorial
		This type of fuel cell also known as the Polymer Electrolyte Membrane Fuel Cell consists of a proton conducting membrane, such as a perfluorosulphonic acid polymer as the electrolyte which has good proton conducting properties, contained between two Pt impregnated porous electrodes.
		PEFCs are capable of operation at pressures from 0.10 to 1.0 MPa (10 to 100 psig) and with suitable current collectors and supporting structure, these fuel cells may be capable of operating at pressures as high as 3000 psi.
		Note that the fuel cell operates on H2 while only a few ppm of CO may be tolerated by the Pt catalysis at its operating temperature of 175 deg F or 80 deg C. If a hydrocarbon fuel such as natural gas is used as a fuel, reforming of the fuel by the reaction:
	www.nfcrc.uci.edu /EnergyTutorial/pemfc.html

	Fuel Cell News - News of Fuel Cells and the Hydrogen Economy
		It was a quiet caravan, powered by fuel cells that silently harvested the energy of hydrogen bonds and fed by air compressors that, depending on the automaker and speed, hummed and whined like a distant swarm of bees.
		Polymer fuel cells operate at much lower temperatures but are much fussier about the quality of their fuel and consequently less efficient.
		Fuel Cells Canada, the national industry association for Canada's hydrogen and fuel cell sector, appointed John Tak as its new President and CEO.
	www.fuelcellstocks.com /fuelcellnews.htm

	GTI Long-Term Proton Exchange Membrane Fuel Cell Testing Shows Outstanding Results
		GTI Long-Term Proton Exchange Membrane Fuel Cell Testing Shows Outstanding Results
		DES PLAINES, Ill., Oct. 29 /PRNewswire/ -- Gas Technology Institute (GTI) researchers have verified excellent long-term performance and stability of advanced proton exchange membrane (PEM) fuel cell components.
		GTI is now running the PEM fuel cell stack in a periodic start/stop- operating mode simulating vehicle operation.
	www.prnewswire.com /cgi-bin/stories.pl?ACCT=104&STORY=/www/story/10-29-2003/0002047206&EDATE=

	Model Gallery : Serpentine Proton Exchange Membrane Fuel Cell Cathode
		Model Gallery : Serpentine Proton Exchange Membrane Fuel Cell Cathode
		The model is based on simple charge and mass balances in the gas diffusion electrodes and the electrolyte in the fuel cell.
		This study exemplifies the use of modeling in the design of experiments and fuel cell prototypes.
	www.comsol.com /showroom/gallery/256.php

	The Proton Exchange Membrane Fuel Cell
		Once fuel cells are commercialized, especially in automobiles, this type of fuel cell are ideal.
		These fuel cells have a high power density and can vary their output quickly to meet shifts in power demand.
		The United States Department of Energy states that PEM fuel cells "…are the primary candidates for light-duty vehicles, for buildings, and potentially for much smaller applications such as replacements for rechargeable batteries in video cameras."
	chemelab.ucsd.edu /fuelcell/PEM.htm

	the Proton Exchange Membrane Fuel Cell
		ECN < Fuel Cell Technology < the fuel cell explained < the Proton Exchange Membrane Fuel Cell
		The polymer is capable of conducting positive hydrogen ions: protons.
		The MEA is clamped between two gas flow field compartments to produce a single cell.
	www.ecn.nl /bct/fuelcellinfo/pemfc.en.html

	Fuel Cell Today - Opening doors to fuel cells commercialisation
		The present invention relates to a novel structure of a single cell module of a proton exchange membrane fuel cell (PEMFC), comprising an anode bipolar plate, a cathode bipolar plate and a membrane electrode assembly (MEA) sandwiched therebetween.
		Modular single cell and assembled cell stack of a proton exchange membrane fuel cell
		Fuel Cell Today - Opening doors to fuel cells commercialisation
	www.fuelcelltoday.com /PatentListings/PatentListingsExternal/DisplayPatent/0,1391,562,00.html

	Fuel Cell Development in China
		Fifty-four percent of fuel cell technology in China is based on proton exchange membrane fuel cell (PEMFC), the most prominent fuel cell technology for transportation applications worldwide.
		Fuel cells are still extremely expensive, over $4,000 per kilowatt, and in transportation applications fuel cells are still very fragile.
		The main opportunities for fuel cell technologies are in the development of prototypes of fuel cell engines and for fuel cell fuelling stations.
	www.ecoworld.com /Home/Articles2.cfm?TID=352

	Vision Engineer - Proton Exchange Membrane Fuel Cell
		The electrolyte in this fuel cell is an ion exchange membrane which is a good proton conductor.
		Water management in the membrane is crucial for efficient performance: The fuel cell must operate under conditions where the by-product water does not evaporate faster than it is produced because the membrane must be hydrated.
		Also known as Polymer Electrolyte Membrane Fuel Cell, this low temperature fuel cell is mainly used in vehicle applications.
	www.visionengineer.com /env/pem.php

	Itochu, Hitachi Zosen Demonstration Test of Proton Exchange Membrane Fuel Cell
		Itochu, Hitachi Zosen Demonstration Test of Proton Exchange Membrane Fuel Cell
		Tokyo, Japan, May 27, 2004 - (JCN Newswire)- ITOCHU Corporation (TSE: 8001) will start a demonstration test involving a Proton Exchange Membrane (PEM) Stationary Fuel Cell, in collaboration with Hitachi Zosen Corporation (TSE: 7004) and Hydrogenics Corporation of Canada.
		By using the combination of an electrolyzer, a hydrogen storage tank, and a fuel cell, this "regenerative" power system can supply a stable quantity of electric power from renewable energy sources, thus contr- ibuting to the attenuation of global warming.
	www.japancorp.net /Article.Asp?Art_ID=7415

	Fuel Cells 2000 : Information Resources : Fuel Cell Library
		Fuel Choices for Fuel Cell Powered Vehicles - the written statement of John W. Holmes of Exxon Corporation, on behalf of the American Petroleum Institute, before the U.S. House of Representatives Committee on Science Subcommittee on Energy and Environment, October 5, 1999.
		Fuel Cell Vehicles: Race to a New Automotive Future - report from the Commerce Department's Office of Technology Policy, provides an excellent snapshot of where the technology is today and projections for a hydrogen future.
		Auto Companies on Fuel Cells - report by Fuel Cells 2000.
	www.fuelcells.org /info/fclib.html

	fuel cell Engineering Web Results
		Photochemically Etched Anodes & Cathodes PHOTOFABRICATION ENGINEERING, INC. (PEI), Milford, MA, is offering a line of custom-made, photochemically-etched anodes and cathodes for fuel cells, heat exchangers, and oxygen and hydrogen generators.
		Fuel Cell Store.com is integrating and advancing the fuel cell industry, by offering electrolysers, hydrogen storage systems, hydrogen energy consulting, alternative energy, renewable energy..
		Fuel Cell Systems Components Eptam Plastics supports the leading manufacturers of fuel cell systems, machining intricate complex components.
	search.globalspec.com /Industrial/fuel_cell

	hydrogen fuel cell car
		Kosmos fuel cell car It's in German, the cost is denominated in markss, and I can't read it, but it kicks butt.
		There were several "hybrid" vehicles on display, and there was one cross-sectioned specimen of a hydrogen fuel cell car, which might have fooled most of the attendees but seemed to me an obvious hoax...
		The Science Bowl team was 6th in the nation and 3rd in a hydrogen fuel cell car competition.
	www.shopping-internet.com /carfuels/hydrogenfuelcellcar

	The Hydrogen Fuel Cell Institute
		Get a fuel cell Commentary Institutions Contact us
		Put a live mini version of the WilderHill Fuel Cell Index 'ticker' right on your desktop!
	www.h2fuelcells.org

	POLY - Advances in Materials for Proton Exchange Membrane Fuel Cell Systems 2005
		Advances in Materials for Proton Exchange Membrane Fuel Cell Systems 2005
		POLY - Advances in Materials for Proton Exchange Membrane Fuel Cell Systems 2005
		3:00 PM. Brian C. Benicewicz, Rensselaer Polytechnic Institute, "Advances in Polybenzimidazole Synthesis and Applications to Fuel Cells"
	www.polyacs.org /arcmeetings/fuelcell.205.shtml

	HyperEnergy: Proton Exchange Membrane Fuel Cell Power System
		HyperEnergy: Proton Exchange Membrane Fuel Cell Power System
	www.stanford.edu /~weston/Conversion/CarrierSystems/FuelCellPowerSystems/PEMFuelCellPowerSystem.htm

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In the News (Fri 25 Dec 09)