KOSEN 한인과학기술자네트워크

> >안녕하세요, > >연료전지 (fuel cell) 분야의 > >해외( 미국, 일본, 유럽등) 제조(예: MEA(Membrane Electrode > >Assembly), stack, 촉매(catalyst) 등) 업체들의 명칭과 > >동향에 대한 것에 대한 정보를 알고자 합니다. > >조언을 부탁드립니다. > > >감사합니다. FUEL CELL WORLD Council이라는 곳이 있습니다. 그중 "Web links for more information"를 보시면 연료전지를 생산하는 주요 회사들이 링크되어있습니다. 각 업체의 동향은 직접 그 회사의 사이트에 가셔서 보시면 무리가 없을 것 같습니다.

Technology Review 2000년 11/12월호에는 자동차용 연료전지 동향에 관한 특집 기사가 실려 있습니다. 또한 연료전지 관련 연구기관, 업체가 소개되어 있습니다. 웹을 통해 전문을 볼 수 있습니다. 도움이 되기를 바랍니다. http://www.techreview.com/articles/nov00/fairley.htm > >안녕하세요, > >연료전지 (fuel cell) 분야의 > >해외( 미국, 일본, 유럽등) 제조(예: MEA(Membrane Electrode > >Assembly), stack, 촉매(catalyst) 등) 업체들의 명칭과 > >동향에 대한 것에 대한 정보를 알고자 합니다. > >조언을 부탁드립니다. > > >감사합니다. > > > >

아래의 자료는 산업기술정보원(http://www.kiniti.re.kr)을 통해 검색된 자료입니다. 웹을 통해 원문신청이 가능합니다. 또한 연구개발정보센터(http://www.kordic.re.kr)의 해외과학기술동향을 통해 연료전지를 검색하시면 최근을 동향을 살펴보실 수 있으실 겁니다. * 연료 전지 재료 개발 동향, TECHNO JAPAN (JPN) 32(6); P20-25; 1999 * 차세대 연료 전지의 개발 동향, Yamashita,K., 粉體と工業 (JPN) 31(10); P59-65; 1999 * 연료 전지의 최신 동향, Umemoto,M., ジェテイ (JPN) 47(4); P49-51; 1999 * 연료 전지의 개발 동향과 재료 개발, Fukui,T., 日本エネルギ－學會誌 (JPN) 78(1); P27-32; 1999 아래는 연료전지와 관련한 사이트 입니다. Manufacturers/Developers: ◈ AlliedSignal (www.alliedsignal.com) ◈ Analytic Power Corporation (www.analyticpower.com) ◈ Avista Laboratories (www.avistalabs.com) ◈ Ballard Power Systems (www.ballard.com) ◈ Energy Partners (www.energypartners.org) ◈ Energy Research Corporation (www.ercc.com) ◈ H Power Corporation (www.hpower.com) ◈ International Fuel Cells (www.internationalfuelcells.com) ◈ M-C Power (www.mcpower.com) ◈ National Renewable Energy Lab, Colorado (PEM) (www.nrel.gov) ◈ Netherlands Energy Research Foundation(ECN) (MCFC, SOFC, and SPFC) (www.ecn.nl) ◈ Oak Ridge National Laboratory, Tennessee (www.ornl.gov) ◈ Pacific Northwest National Laboratory, Washington (PAFC, MCFC, and SOFC) (www.pnl.,gov) ◈ Plug Power, L.L.C. (www.plugpower.com) ◈ Princeton University, New Jersey (www.princeton.edu/~ceesdoe) ◈ Rocky Mountain Institute, Colorado (www.rmi.org) ◈ Sandia National Labs, New Mexico (www.sandia.gov) ◈ Siemens AG, Germany (www.siemens.com) ◈ Small-Scale Fuel Cell Commercialization Group, Oklahoma (www.oge.com/sfccg) ◈ Southern California Gas (www.socalgas.com) ◈ Toyota Motor Corporation, Japan (www.toyota.co.jp/e/green) ◈ University of California, Riverside (cert.ucr.edu) ◈ University of California, Davis, Institute for Transportation Studies (www.engr.ucdavis.edu/~its) ◈ University of California, Davis, R&D (www.llnl.gov/das/das_research) ◈ Warsitz Enterprises, California (www.warsitz-enterprises.com) ◈ Westinghouse's Solid Oxide Fuel Cell (www.stc.westinghoues.com/dept/SOFC/index.htm) Other Fuel Cell Organizations: ◈ American Hydrogen Association (www.clean-air.org) ◈ American Methanol Institute (www.methanol.org) ◈ California Hydrogen Business Council (www.ch2bc.org) ◈ Canadian Fuel Cell Page ◈ EPRI (www.epri.com) ◈ Fuel Cells 2000 (www.fuelcells.org) ◈ Fuelcellinvesting.org (www.fuelcell.org) ◈ Hydrogen and Fuel Cell Letter (www.hfclletter.com) ◈ Hydrogen & Fuel Cell Investor (www.h2fc.com) ◈ National Hydrogen Association ◈ Online Fuel Cell Information Center, The Scientific American (www.fuelcells.org) > >안녕하세요, > >연료전지 (fuel cell) 분야의 > >해외( 미국, 일본, 유럽등) 제조(예: MEA(Membrane Electrode > >Assembly), stack, 촉매(catalyst) 등) 업체들의 명칭과 > >동향에 대한 것에 대한 정보를 알고자 합니다. > >조언을 부탁드립니다. > > >감사합니다. > > > >

> >안녕하세요, > >연료전지 (fuel cell) 분야의 > >해외( 미국, 일본, 유럽등) 제조(예: MEA(Membrane Electrode > >Assembly), stack, 촉매(catalyst) 등) 업체들의 명칭과 > >동향에 대한 것에 대한 정보를 알고자 합니다. > >조언을 부탁드립니다. > > >감사합니다. > ------------------------------------------------------------------- 1. Dry layer preparation and characterization of polymer electrolyte fuel cell components Guelzow, E. (Inst fuer Technische Thermodynamik) Schulze, M. | Wagner, N. | Kaz, T. | Reissner, R. | Steinhilber, G. | Schneider, A. Source: Journal of Power Sources 86 1 Sep 13-Sep 16 1999 2000 Elsevier Sequoia SA p 352-362 0378-7753 Abstract: The main problem for future fuel cell commercialization is the cost of membrane-electrode assemblies (MEAs) satisfying both power density and lifetime requirements. At DLR, low-cost MEA production techniques are being developed. These new MEAs are characterized and investigated with physical and electrochemical methods in order to study the power loss processes, the lifetime, the reaction mechanisms and in support of MEA development. The possibilities for the characterization methods used will be demonstrated by various examples. At DLR, a new production technique based on the adaptation of a rolling process is developed for fuel cell electrode and MEA preparation. After mixing the dry powder electrode material in a mill, it is blown onto the membrane (or backing) resulting in a uniformly distributed layer. This reactive layer is fixed and thoroughly connected to the membrane by passing them through a calender. In order to produce the second electrode, the same steps are repeated. This procedure is very simple and, as a dry process, avoids the use of any solvents and drying steps. We have achieved a thickness of the reactive layer as low as 5 µm, reducing the amount of catalyst needed and, thus, the costs. Electrochemical investigations have shown a performance comparable to that of commercial electrodes. The degradation of MEA for polymer membrane fuel cell (PEFC) components during the cell's lifetime, yields a change in the electrochemical behaviour. The characterization of PEFC MEA-components after electrochemical operation has given information about the degradation of electrodes and membranes and about the change in the platinum distribution on the anode, whilst on the cathode, the platinum content is unchanged. In English 41 Refs. Ei tagged | Document availability and cost 2. Electro-active polymer materials for solid polymer fuel cells Kim, Kwang J. (Univ of New Mexico) Shahinpoor, Mohsen | Razani, Arsalran Source: Proceedings of SPIE - The International Society for Optical Engineering v 3669 Mar 1-Mar 2 1999 1999 Sponsored by: SPIE Society of Photo-Optical Instrumentation Engineers p 385-393 0277-786X Abstract: The solid polymer fuel cell (SPFC) technology is one of the most promising sources of future energy. Its high power density and mild operating conditions make the SPFC technology highly attractive for stationary, portable, and automobile applications. In this paper, we briefly discuss the potential use of electro-active polymer materials for the SPFC technology. In order to realize the fast intrinsic kinetics of the cathode reaction an efficient utilization of the Pt catalyst is necessary. In this sense, we introduce a novel concept of a fabrication technique of the membrane-electrode assembly (MEA) that consists of a Pt-deposited ion exchange membrane and two current collectors. It appears that the manufacturing process of such MEAs is simple, efficient, and economical relative to the current state-of-art MEA technology that employs various particle distribution techniques. Also, it should be pointed out that the use of this new MEA fabrication technique could improve the rate density of H+ transport significantly. In English 67 Refs. EI99084757825 Ei tagged | Document availability and cost 3. Novel process to fabricate membrane electrode assemblies for proton exchange membrane fuel cells Kim, C.S. (Korea Inst of Energy Research) Chun, Y.G. | Peck, D.H. | Shin, D.R. Source: International Journal of Hydrogen Energy v 23 n 11 Nov 1998 Elsevier Sci Ltd p 1045-1048 0360-3199 Abstract: A new fabrication method of membrane electrode assembly (MEA) for proton exchange membrane fuel cells is developed by using perfluorosulfonyl fluoride copolymer powder and Pt/C catalyst. The perfluorosulfonyl fluoride copolymer powder is pressed into a sheet at 230°C by hot pressing. The Pt/C catalyst is then coated on to either side of the sheet by screen printing, followed by hot pressing. During this process, due to the melt-fabricable property of the pre-formed sheet, the coated catalyst layer is embedded into the membrane. The resultant MEA is converted into perfluorosulfonate polymer by hydrolysis of NaOH solution. The thermal property of the copolymer powder has been analyzed by DTA-TGA, and the interfacial contact of the catalyst with the membrane has been also investigated by SEM. The performance characteristics of the MEA have been evaluated in a single cell. In English 6 Refs. EI98114484987 Ei tagged | Document availability and cost 4. Measurements of proton conductivity in the active layer of PEM fuel cell gas diffusion electrodes Boyer, C. (Texas A and M Univ System) Gamburzev, S. | Velev, O. | Srinivasan, S. | Appleby, A.J. Source: Electrochimica Acta v 43 n 24 1998 Elsevier Sci Ltd p 3703-3709 0013-4686 Abstract: This paper reports further studies to understand and optimize the Membrane and Electrode Assembly (MEA) structure in Polymer Electrolyte Membrane Fuel Cells (PEMFCs). The effective proton conductivity in the active catalyst layer was measured as a function of its composition, which consisted of platinum catalyst on carbon support (E-Tek) and Nafion polymer electrolyte (DuPont de Nemours). The conductivity was calculated from the resistance added to a standard MEA by the addition of an inactive composite layer in the electrolyte path between the anode and cathode. The specific conductivity of the active layer was found to be proportional to the volume fraction of Nafion in the composite mixture, following the relationship κH(+)eff approximately equals 0.078εNafion + 0.004 S cm-1. Modeling studies showed that this ionic conductivity limits the utilized active layer thickness to 20-25 µm. In English 12 Refs. EI98114470704 Ei tagged | Document availability and cost 5. Platinum-catalyzed polymer electrolyte membrane for fuel cells Hwang, T. Jan (MicroCoating Technologies) Shao, Hong | Richards, Neville | Schmitt, Jerome | Hunt, Andrew | Lin, Wen-Yi Source: Materials Research Society Symposium - Proceedings 575 Apr 5-Apr 8 1999 2000 Materials Research Society p 239-246 0272-9172 Abstract: The objective of this research is to develop the combustion chemical vapor deposition (CCVD) process for low-cost manufacture of catalytic coatings for proton exchange membrane fuel cell (PEMFC) applications. The platinum coatings as well as the fabrication process for membrane-electrode-assemblies (MEAs) were evaluated in a single testing fuel cell using hydrogen/oxygen. It was found that increasing the platinum loading from 0.05 to 0.1 mg/cm2 did not increase the fuel cell performance. The in-house MEA fabrication process needs to be improved to reduce the cell resistance. Significantly higher performance of Pt coating by the CCVD process has been obtained by MCT's fuel-cell industry collaborators who are more experienced with MEA fabrication. The results can not be revealed due to confidentiality agreements. In English 4 Refs. Ei tagged | Document availability and cost 6. Effect of diffusion-layer morphology on the performance of polymer electrolyte fuel cells operating at atmospheric pressure Jordan, L.R. (Monash Univ) Shukla, A.K. | Behrsing, T. | Avery, N.R. | Muddle, B.C. | Forsyth, M. Source: Journal of Applied Electrochemistry 30 6 2000 Kluwer Academic Publishers p 641-646 0021-891X Abstract: In general, the performance of polymer electrolyte fuel cells (PEFCs) containing membrane electrode assemblies (MEAs) with diffusion layers of Acetylene Black carbon are superior to those with Vulcan XC-72R carbon. It is suggested that the mechanism of improved performance is that lower porosity Acetylene Black is better at removing water from the MEA, thereby leading to improved gas diffusion. It appears that the diffusion layer plays a seminal role in the water management of the cell as well as in the humidification of the membrane electrolyte. In English 22 Refs. Ei tagged | Document availability and cost 7. Bipolar plate materials for solid polymer fuel cells Davies, D.P. (Loughborough Univ) Adcock, P.L. | Turpin, M. | Rowen, S.J. Source: Journal of Applied Electrochemistry 30 1 2000 Kluwer Academic Publishers p 101-105 0021-891X Abstract: The interfacial ohmic losses between the bipolar plate and the MEA can significantly reduce the overall power output from a SPFC. For graphitic bipolar plate materials, these losses are insignificant relative to stainless steel, where the existence of a passive film on the surface greatly reduces electrical conductivity. In this paper we have evaluated different bipolar plate materials, and present long-term fuel cell data for Poco graphite, titanium, 316 and 310 stainless steel. The properties of the passive film on the surface of 316 and 310 stainless steel are markedly different. Although both were adequately corrosion resistant in a fuel cell environment, 310 tended to produce higher fuel cell performance and like 316, no degradation was observed after 1400 h testing. Analysis of the passive film indicated that this increased performance was related to the decreased thickness of the oxide film. In English 16 Refs. Ei tagged | Document availability and cost 8. Proceedings of the 1996 31st Intersociety Energy Conversion Engineering Conference. Part 1 (of 4) Source: Proceedings of the Intersociety Energy Conversion Engineering Conference 1 Aug 11-16 1996 1996 Sponsored by: IEEE IEEE 665p 0146-955X Abstract: The proceedings contains 118 papers from the 1996 31st Intersociety Energy Conversion Engineering Conference. Topics discussed include: spacecraft solar arrays; space power systems and applications; terrestrial applications of aerospace power; more-electric aircraft power systems; electromechanical actuator applications; power systems simulations; Integrated Solar Upper Stage energy conversion; batteries for aerospace power; electric propulsion and the space environment; wireless energy transmission; power management and distribution; power electronics; and static and dynamic space energy conversion. In English EI96113427810 Ei tagged | Document availability and cost 9. Internal humidifying of PEM fuel cells Staschewski, D. (Inst for Neutron Physics and Reactor Technics) Source: International Journal of Hydrogen Energy 21 5 May 1996 Pergamon Press Inc p 381-385 0360-3199 Abstract: Hydrogen fuel cells (FC) for vehicular traction should stand out for a car-specific lightweight design. As regards PEMFC systems containing proton exchange membranes, this quality can be considerably improved by introducing porous bipolar plates which are conditioned by a water loop and deliver hot humidifying water to the adjacent membrane-electrode assembly (MEA). According to the principle of internal humidification here indicated special fuel cells based on sintered fiber and powder graphite were manufactured at FZK on a semi-technical scale. Self-made Pt/C electrodes hotpressed onto Nafion resulted in currents up to 200 A with pure oxygen as oxidant, providing the precondition for detailed studies of turnover and drainage rates within a monocell test arrangement. In English 8 Refs. EI96053199339 Ei tagged | Document availability and cost 10. Conductance of Nafion 117 membranes as a function of temperature and water content Cappadonia, Marcella (Research Cent Juelich (KFA)) Erning, J. Wilhelm | Saberi, Seyedeh M. | Stimming, Ulrich Source: Solid State Ionics 77 Apr 1995 Sponsored by: Deutsche Forschungsgemeinschaft; Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V.; International Science Foundation; Hoechst AG; Bayer AG; Degussa Elsevier Science B.V. p 65-69 0167-2738 Abstract: The conductance of Nafion membranes was investigated by means of impedance spectroscopy as a function of temperature and of sample treatment. In addition to other treatments, the hot-pressing of Nafion membranes was also considered, because of its relevance for making membrane-electrode assemblies (MEA) for proton exchange membrane fuel cells (PEMFC). An Arrhenius-type analysis of the conductance shows two regimes, with a change in activation energy observed at transition temperatures between 225 and 260 K which depends on the water content. In English 12 Refs. EI95062742867 Ei tagged | Document availability and cost 11. Recent advances in direct methanol fuel cells at Los Alamos National Laboratory Ren, Xiaoming (Los Alamos Natl Lab) Zelenay, Piotr | Thomas, Sharon | Davey, John | Gottesfeld, Shimshon Source: Journal of Power Sources 86 1 Sep 13-Sep 16 1999 2000 Elsevier Sequoia SA p 111-116 0378-7753 Abstract: This paper describes recent advances in the science and technology of direct methanol fuel cells (DMFCs) made at Los Alamos National Laboratory (LANL). The effort on DMFCs at LANL includes work devoted to portable power applications, funded by the Defense Advanced Research Project Agency (DARPA), and work devoted to potential transport applications, funded by the US DOE. We describe recent results with a new type of DMFC stack hardware that allows to lower the pitch per cell to 2 mm while allowing low air flow and air pressure drops. Such stack technology lends itself to both portable power and potential transport applications. Power densities of 300 W/l and 1 kW/l seem achievable under conditions applicable to portable power and transport applications, respectively. DMFC power system analysis based on the performance of this stack, under conditions applying to transport applications (joint effort with U.C. Davis), has shown that, in terms of overall system efficiency and system packaging requirements, a power source for a passenger vehicle based on a DMFC could compete favorably with a hydrogen-fueled fuel cell system, as well as with fuel cell systems based on fuel processing on board. As part of more fundamental studies performed, we describe optimization of anode catalyst layers in terms of PtRu catalyst nature, loading and catalyst layer composition and structure. We specifically show that, optimized content of recast ionic conductor added to the catalyst layer is a sensitive function of the nature of the catalyst. Other elements of membrane/electrode assembly (MEA) optimization efforts are also described, highlighting our ability to resolve, to a large degree, a well-documented problem of polymer electrolyte DMFCs, namely `methanol crossover'. This was achieved by appropriate cell design, enabling fuel utilization as high as 90% in highly performing DMFCs. In English 7 Refs. Ei tagged | Document availability and cost 12. SOFC technology development at Rolls-Royce Gardner, F.J. (Rolls-Royce Strategic Research Cent) Day, M.J. | Brandon, N.P. | Pashley, M.N. | Cassidy, M. Source: Journal of Power Sources 86 1 Sep 13-Sep 16 1999 2000 Elsevier Sequoia SA p 122-129 0378-7753 Abstract: Fuel cells have the prospect for exploiting fossil fuels more benignly and more efficiently than alternatives. The various types represent quite different technologies, with no clear winner, yet. Nevertheless, the high temperature MCFC and solid oxide fuel cell (SOFC) types seem better suited to power generation in a hydrocarbon fuel economy. Presently, the costs of MCFCs and SOFCs are too high to compete directly with contemporary power generation plant. Seeking to overcome the drawbacks of first generation fuel cells, over the past 7 years an innovative second generation SOFC concept has been evolved in the Rolls-Royce Strategic Research Centre, with encouraging results. It is distinguished from other types by the name: Integrated Planar Solid Oxide Fuel Cell (IP-SOFC). It is a family of integrated system concepts supporting product flexibility with evolutionary stretch potential from a common SOFC module. Fabrication of the key component of the IP-SOFC, the `multi-cell membrane electrode assembly (multi-cell MEA) module' carrying many series connected cells with supported electrolyte membranes only 10 to 20 µm thick, has been proved. Development of the internal reforming subsystem, the next big hurdle, is now in hand. Following an outline of its salient features and test results, the methodology and results of recent IP-SOFC stack costing studies are presented, and the continuing research and development programme indicated. In English 6 Refs. Ei tagged | Document availability and cost 13. Stainless steel as a bipolar plate material for solid polymer fuel cells Davies, D.P. (Loughborough Univ) Adcock, P.L. | Turpin, M. | Rowen, S.J. Source: Journal of Power Sources 86 1 Sep 13-Sep 16 1999 2000 Elsevier Sequoia SA p 237-242 0378-7753 Abstract: Stainless steel bipolar plates for the Solid Polymer Fuel Cell (SPFC) offer many advantages over conventional graphitic materials. These include relative low cost, high strength, ease of manufacture and as they can be shaped into thin sheets, significant improvement in the power/volume ratio. However, interfacial ohmic losses across the metallic bipolar plate and the Membrane Electrode Assembly (MEA), reduce the overall power output from a SPFC. Despite a large range of commercially available alloys, 316 stainless steel has traditionally been the alloy of choice for bipolar plates. A number of alternative grades of stainless steel have been evaluated in terms of the electrical resistance of their surface oxide film. This showed that ohmic losses exhibited in fuel cell performance varied depending on the elemental composition of the stainless steel alloy. Three stainless steel alloys, 310, 316 and 904 L, were chosen as candidate bipolar plate materials. Increased polarization was observed in the order 904 L<310<316. This was maintained throughout an ongoing endurance test, where these cells have been run for over 3000 h without significant performance degradation. This difference in polarization behaviour was attributed to variation in thickness of the oxide film. Analysis has shown no deleterious effect on the surface of the bipolar plate and no evidence of corrosion. In English 7 Refs. Ei tagged | Document availability and cost 14. Use of stainless steel for cost competitive bipolar plates in the SPFC Makkus, Robert C. (Netherlands Energy Research Foundation) Janssen, Arno H.H. | de Bruijn, Frank A. | Mallant, Ronald K.A.M. Source: Journal of Power Sources 86 1 Sep 13-Sep 16 1999 2000 Elsevier Sequoia SA p 274-282 0378-7753 Abstract: Bipolar plate materials for the Solid Polymer Fuel Cell (SPFC), alternative to the presently used graphite, should fulfil the following requirements in order to be applicable: low-cost, easy to machine or to shape, lightweight and low volume, mechanically and sufficiently chemically stable, and having a low contact resistance. Stainless steel is a low-cost material that is easy to shape, and thin sheets can be used to yield low volume and weight. Several stainless steels have been tested for their applicability. The compaction pressure is of large influence on the contact resistance. Also, the pre-treatment of the surface is of influence; this is a permanent effect. Stainless steel constituents slowly dissolve into the Membrane Electrode Assembly (MEA). It has been found that the anode side stainless steel flow plate is the main source of contamination. Direct contact between the stainless steel and the membrane greatly enhances the contaminant level. Using an appropriate pre-treatment and a coating or gasket preventing direct contact between stainless steel and the membrane, one alloy was found to satisfy the requirements for use as a low cost material for the flow plate of an SPFC. In English 12 Refs. Ei tagged | Document availability and cost 15. Predicting the effect of gas-flow channel spacing on current density in PEM fuel cells Naseri-Neshat, Hamid (South Carolina State Univ) Shimpalee, Sirivatch | Dutta, Sandip | Lee, Woo-kum | Van Zee, J.W. Source: American Society of Mechanical Engineers, Advanced Energy Systems Division (Publication) AES 39 Nov 14-Nov 19 1999 1999 Sponsored by: ASME ASME p 337-350 Abstract: The effects of change in diffusion layer width for constant diffusion layer thickness and constant gas-flow channel width are investigated with a straight channel model of a Proton Exchange Membrane (PEM) fuel cell. A three-dimensional 10-cm long straight channel model of the PEM fuel cell is presented. The geometrical model includes diffusion layers on both the anode and cathode sides and the numerical model couples three-dimensional Navier-Stokes flow with electro-chemical reactions occurring in the fuel cell. Contours of the current density, anode water vapor concentration, anode water activity, water molecules per proton flux, and secondary flow velocity vectors at different cross sections are presented for the two diffusion layer widths. For the particular conditions and properties used for this study, the results show a marked difference between the base case (0.16-cm) and the wide (0.72-cm) diffusion layer. The current density is quite uniform at different axial cross sections and cross-flow sections for the 0.16-cm wide diffusion layer. However, for the 0.72-cm wide diffusion layer, the current density decreases more significantly in the axial direction near the edges of the diffusion layer. Numerical predictions of the water transport between cathode and anode across the width of the MEA show the delicate balance of diffusion and electro-osmosis and their effect on the current distribution along channel. In English 12 Refs. Ei tagged | Document availability and cost 16. Current efficiency for soybean oil hydrogenation in a solid polymer electrolyte reactor An, W. (Tulane Univ) Hong, J.-K. | Pintauro, P.N. Source: Journal of Applied Electrochemistry v 28 n 9 Sep 1998 Kluwer Academic Publishers p 947-954 0021-891X Abstract: Soybean oil has been hydrogenated electrocatalytically in a solid polymer electrolyte (SPE) reactor, similar to that in H2/O2 fuel cells, with water as the anode feed and source of hydrogen. The key component of the reactor was a membrane electrode assembly (MEA), composed of a precious metal-black cathode, a RuO2 powder anode, and a NafionR 117 cation-exchange membrane. The SPE reactor was operated in a batch recycle mode at 60°C and one atmosphere pressure using a commercial-grade soybean oil as the cathode feed. Various factors that might affect the oil hydrogenation current efficiency were investigated, including the type of cathode catalyst, catalyst loading, the cathode catalyst binder loading, current density, and reactant flow rate. The current efficiency ordering of different cathode catalysts was found to be Pd > Pt > Rh > Ru > Ir. Oil hydrogenation current efficiencies with a Pd-black cathode decreased with increasing current density and ranged from about 70% at 0.050 A cm-2 to 25% at 0.490 A cm-2. Current pulsing for frequencies in the range of 0.25-60 Hz had no effect on current efficiencies. The optimum cathode catalyst loading for both Pd and Pt was 2.0 mg cm-2. Soybean oil hydrogenation current efficiencies were unaffected by NafionR and PTFE cathode catalyst binders, as long as the total binder content was less than or equal 30 wt % (based on the dry catalyst weight). When the oil feed flow rate was increased from 80 to 300 ml min-1, the oil hydrogenation current efficiency at 0.100 A cm-2 increased from 60% to 70%. A high (70%) current efficiency was achieved at 80 ml min-1 by inserting a nickel screen turbulence promoter into the oil stream. In English 22 Refs. EI99014539441 Ei tagged | Document availability and cost > > >

> >안녕하세요, > >연료전지 (fuel cell) 분야의 > >해외( 미국, 일본, 유럽등) 제조(예: MEA(Membrane Electrode > >Assembly), stack, 촉매(catalyst) 등) 업체들의 명칭과 > >동향에 대한 것에 대한 정보를 알고자 합니다. > >조언을 부탁드립니다. > > >감사합니다. Dear Sir, I'm pleased to send you the Research and Development programme file about FUEL CELL in Europe. I hope it can be useful for your research. Yours sincerely Moody Kim A.T.I. (France) > > > >