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1.发明专利
公开(公告)号：JP2002110180A
公开(公告)日：2002-04-12
申请号：JP2001226524
申请日：2001-07-26
Applicant: DMC2 DEGUSSA METALS CATALYSTS CERDEC AG
Inventor： BINDER MATTHIAS , ZUBER RALF DR , VOGT MARKUS , HEINZ GERHARD
Abstract: PROBLEM TO BE SOLVED: To furthermore improve the structure of a reaction layer including electrode catalyst so as to furthermore enhance the output power of a fuel cell at low current density. SOLUTION: A film-electrode unit which comprises a polyelectrolyte-film having a first and a second surface wherein both surfaces are in contact with porous reaction layers and gas partition layers, and wherein one of the two reaction layers includes noble metal as black powder, in the film-electrode unit for a polyelectrolyte-fuel cell where the reaction layers include noble metal catalyst carried on carbon and ionomers.
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公开(公告)号：JP2002083605A
公开(公告)日：2002-03-22
申请号：JP2001226523
申请日：2001-07-26
Applicant: DMC2 DEGUSSA METALS CATALYSTS CERDEC AG
Inventor： STARZ KARL-ANTON DR , ZUBER RALF DR , KRAMER ANITA , FEHL KNUT , KOHLER JOACHIM , WITTPAHL SANDRA
IPC: H01M4/88 , H01M4/92 , H01M8/1004 , H01M8/02 , H01M8/10
Abstract: PROBLEM TO BE SOLVED: To provide a water-based catalyst-ink that contains a solvent which is nontoxic and/or which is not easily inflammable and further that overcomes poor adhesion, poor electrical output and a scarce screen printing working time which are defects of a conventional water-based catalyst-ink. SOLUTION: In the ink for manufacturing a film-electrode unit for PEM fuel cell containing a catalyst material, ionomer, water, and organic solvent, the organic solvent is a compound of at least one kind from a group of linear dialcohols, having a flash point exceeding 100 deg.C, and further the organic solvent exists in the ink at a concentration of 1 to 50 wt.% with respect to the weight of water.
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公开(公告)号：JPH103929A
公开(公告)日：1998-01-06
申请号：JP6713297
申请日：1997-03-21
Applicant: DEGUSSA
Inventor： FISCHER ANDREAS , WENDT HARTMUT , ZUBER RALF DR
IPC: H01M4/86 , H01M4/92 , H01M8/10 , H01M8/1004
Abstract: PROBLEM TO BE SOLVED: To provide essentially improved output data for the air operation via the optimum contact of three phases of catalyst/electrolyte/gas by setting the total porosity of an electrode to the specific % range. SOLUTION: For the manufacture of an electrode-membrane unit, a coating dispersion liquid constituted of a Pt/C-catalyst (Pt: 30%) of 3.1wt.%, a 5%- ionomer solution of 30.9wt.% containing isopropanol of 90wt.% and water of 10wt.% glyceline of 37.2wt.%, water of 24.8wt.%, tetrabutyl ammonium hydroxide of 2.5wt.%, and Li2 CO3 of 1.5wt.% is heated to 150 deg.C, and it is sprayed on a Nafion membrane loaded with sodium ions. Li2 CO3 is converted into recoil protons and decomposed in sulfuric acid of 1N. The total porosity of this electrode is set to 65% in the range of 40-75%.
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公开(公告)号：JPH11329452A
公开(公告)日：1999-11-30
申请号：JP7786199
申请日：1999-03-23
Applicant: DEGUSSA
Inventor： ZUBER RALF DR , FEHL KNUT , STARZ KARL-ANTON DR , STENKE UDO
Abstract: PROBLEM TO BE SOLVED: To facilitate gas transport in a reactive layer and improve the access of a reaction gas to a catalyst by providing a reactive layer having a heterogeneous micro structure consisting of a catalyst impregnated with an ionomer and buried in the ionomer and the residual catalyst containing no ionomer, and specifying the ratio between these catalysts. SOLUTION: A reactive layer has a heterogeneous microstructure having a ratio by weight of a catalyst impregnated with an ionomer and buried in the ionomer to a catalyst containing no ionomer of 1:1 to 20:1, desirably, 3:1 to 10:1. According to this, extremely satisfactory getting-in and -out of a reaction gas and, further, delivery of a proton flow through the particle impregnated with the ionomer with a small loss can be attained, and the characteristic of the reactive layer can be optimized by properly selecting the ratio. The reactive layer comprises pores having diameters of 0.03-1 μm and has a pore capacity of 0.7-1.3 ml/g, and the thickness of the reactive layer is set to 5-100 μm.
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公开(公告)号：JP2002110198A
公开(公告)日：2002-04-12
申请号：JP2001258420
申请日：2001-08-28
Applicant: DMC2 DEGUSSA METALS CATALYSTS CERDEC AG
Inventor： ZUBER RALF DR , BAYER ARMIN , KUEHNHOLD HEIKE , STENKE UDO DR
IPC: H01M4/86 , B60L11/18 , H01M2/14 , H01M4/96 , H01M8/0234 , H01M8/0263 , H01M8/0273 , H01M8/0282 , H01M8/1007 , H01M8/24 , H01M8/242 , H01M8/248 , H01M8/02 , H01M8/00 , H01M8/10
Abstract: PROBLEM TO BE SOLVED: To provide a fuel cell stack having simple composition compared with a prior art which is equivalent or improved in electrical output. SOLUTION: A PEM fuel cell stack comprises one or more fuel cell(s) 1, which is (or are) arranged above and blow, having membrane-electrode units (2) between two electrically conductive bipolar electrode plates (3 and 4) having passages (10) whose one sides are opened to supply a reactive gas on their surfaces. In this case, each membrane-electrode unit has a polymer electrolyte- membrane (5) which comes into contact with reaction layers (6 and 7) on its surface, the reactive layers have their surface areas which are smaller than that of the polymer electrolyte-membrane. Gas-distributing layers (8 and 9) comprising carbon fiber-made cloth, which can be compressed and have rough pores, are provided between each reaction layer and the bipolar electrode plate adjacent to the reaction layers. Packing (11 and 12) is inserted in an area except the surface covered with the gas-distributing layers (8 and 9), and the gas- distributing layers have a thickness of D1 and the packing has a thickness of D2.
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Patent Agency Ranking
公开(公告)号：JPH10199332A
公开(公告)日：1998-07-31
申请号：JP31010897
申请日：1997-11-12
Applicant: DEGUSSA
Inventor： ZUBER RALF DR , FEHL KNUT , PETER WILLI , KASPER ELISABETH
Abstract: PROBLEM TO BE SOLVED: To reduce precipitation of solids and improve the conductivity of baking layer by mixing specified quantity rate of polyethylene-imine as organic polymer compound into a paste composed of the specified rate of water-soluble organic solvent and the bonding agent containing minute metal powder and/or non-metal powder and water-soluble organic polymer compound. SOLUTION: 0.3-3wt.% amount of polyethylene-imine is to be contained to the whole weight of the paste. As the water-soluble organic solvent, 8-17wt.% of polyalcohol is to be contained and water is possible to be used as substitute for up to 40% of this alcohol and glycol or glyceryn is preferable for polyalcohol. By using polyethylene-imine, necessary amount of polymer and solvent are enabled to reduce without spoiling necessary characteristic for screen printing method. An amount of discharging organic waste is possible to be reduced in a baking layer production process of the microelectronics.
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公开(公告)号：JP2002117865A
公开(公告)日：2002-04-19
申请号：JP2001129286
申请日：2001-04-26
Applicant: DMC2 DEGUSSA METALS CATALYSTS CERDEC AG
Inventor： ZUBER RALF DR , BAYER ARMIN , FEHL KNUT , BANISCH VOLKER , LEHMANN THOMAS DR
IPC: H01M4/96 , H01M8/0234 , H01M8/0239 , H01M8/0245 , H01M8/1004 , H01M8/02 , H01M8/10
Abstract: PROBLEM TO BE SOLVED: To provide an improved gas distribution structure for a polymer electrolyte-fuel cells, which avoids the fault of precedence technology, a gas diffusion electrode, and its manufacturing method. SOLUTION: The gas distribution structure for polymer electrolyte-fuel cells has a carbon carrier of a shape of a thin layer, which is made hydrophobic and makes two surface boundary, and a contact layer, which consists of a perfect mixture which consists of at least one sort of a hydrophobic polymer, and fine carbon particles, at the one side surface of the two surfaces. The hydrophobicity of the carbon carrier is generated by at least one sort of the hydrophobic polymer, and is limited to two layers. The above two layers go into a depth of 5 to 40 μm from the two surfaces of the carbon carrier, respectively, and fill up the fine hole capacity of the carbon carrier in the domain of the hydrophobic layer in 20 to 60%.
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公开(公告)号：JP2000268829A
公开(公告)日：2000-09-29
申请号：JP2000067017
申请日：2000-03-10
Applicant: DEGUSSA
Inventor： STARZ KARL-ANTON DR , ZUBER RALF DR , GOETTENAUER WOLFGANG , FEHL KNUT , DIEHL MANFRED
Abstract: PROBLEM TO BE SOLVED: To easily form a required pattern in high size-stability by performing printing by keeping mutually precise positioning patterns of electrode layers on a front surface and a rear surface. SOLUTION: For printing of a film, stencil, offset, gravure, screen, or pad printing can be used. Depending on a printing method to be used, both surfaces of a polymer film can be printed simultaneously or sequentially. The gravure printing is suitable for simultaneous adhesion on an electrode layer of the film, for example, and both surfaces of the film are, preferably, sequentially adhered in the screen-printing. For mutually and positionally-precisely arranging printed patterns of the electrode layers on the front surface and the rear surface, preferably, a polymer electrolyte film in a temperature-stable form which is provided by substituting protons of the film for univalent positive-charged ions is used, and moisture content in the film is 2-20 mass%.
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公开(公告)号：JP2000067873A
公开(公告)日：2000-03-03
申请号：JP23259199
申请日：1999-08-19
Applicant: DEGUSSA
Inventor： ZUBER RALF DR , KARCH RALF DR , FEHL KNUT , STARZ KARL-ANTON DR
Abstract: PROBLEM TO BE SOLVED: To manufacture a catalyst layer having good catalytic activity by a simple method advantageous for the cost by coating a substrate material with an ink containing a dispersion liquid comprising a carbon particle in an ionomer solution and at least one organic noble metal complex compound and by drying the ionomer or the substrate material at a temperature less than that to be damaged by a heat. SOLUTION: An ink contains a conductive carbon particle in an ionomer solution and a dispersion liquid of at least one organic noble metal complex compound. At this time, the noble metal of the complex compound exists at an oxidation number 0 and the complex compound can be thermally decomposed at a temperature less than that at which an ionomer or an indication material is damaged by heat under formation of noble metal fine particle. The organic noble metal complex compound is an aliphatic hydrocarbon or an ester which can be used as a pure liquid or a solution in a non-polar solvent corresponding to an aggregation state and a desired concentration.
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公开(公告)号：ES2159978T3
公开(公告)日：2001-10-16
申请号：ES99108791
申请日：1999-05-03
Applicant: DMC2 DEGUSSA METALS CATALYSTS
Inventor： STARZ KARL-ANTON DR , ZUBER RALF DR , GOTTENAUER WOLFGANG DR , FEHL KNUT , DIEHL MANFRED DR
Abstract: Electrode layer pattern is applied onto a polymer electrolyte membrane (PEM) web by continuously printing with an ink containing an electro-catalyst and immediately drying. An electrode layer pattern is applied onto a polymer electrolyte membrane web by printing front and back faces of the membrane continuously in the desired pattern with the electrode layers using an ink containing an electro-catalyst and immediately drying at elevated temperature. Printing is carried out while maintaining accurate positions of the patterns of electrode layers of front and back faces relative to one another. Independent claims are also included for the following: (i) application of patterned electrode layers onto a polymer electrolyte membrane web by printing one side of the membrane continuously in the desired pattern with the electrode layers using an ink containing an electro-catalyst and immediately drying at elevated temperature; (ii) production of a membrane-electrode unit by placing, adhesive bonding or laminating gas distribution structures onto a printed polymer electrolyte membrane produced by one of the above processes; and (iii) a PEM fuel cell membrane-electrode unit produced as described above.
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