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1.发明公开Gas-fed porous electrode for use in vertical plane in electrochemical cell or electrolytic cell 失效用于电化学细胞或电解质细胞的垂直平面中的气体多孔电极
公开(公告)号：EP0106621A3
公开(公告)日：1986-01-22
申请号：EP83306020
申请日：1983-10-05
摘要： A porous gas fed electrode (14) adapted to operate in a large capacity cell (10) with a stable three phase interface in the electrode thereby avoiding the problems of gas percolation can be readily achieved in a simple and inexpensive manner by the provision of a porous hydrophilic layer (21) on the surface of the electrode which is in contact with the aqueous electrolyte (17). Due to the high capillary pressure exhibited by liquids in hydrophilic pores, very high gas pressures are required to force the gas through the structure and the loss of gas into the electrolyte is thereby eliminated. In addition, a gas pressure in the gas compartment (23) of the electrochemical cell employing such an electrode can be raised to balance the electrolyte pressure at the bottom of the electrode thereby effectively preventing electrolyte seepage into the gas compartment.
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公开(公告)号：EP0117290A3
公开(公告)日：1986-01-22
申请号：EP83111416
申请日：1983-11-15
CPC分类号： H01M4/90 , C25B11/0494 , H01M8/08
摘要： Fuel cell catalysts which are efficient, long-lived, and refurbishable in-situ include gold carrying a UPD (underpotential deposited) deposit of another element. UPD Ag, Pt, Pd, Ir, Rh, or Tl, Pb, Bi is formed on Au crystallites which are carried on and bonded to the surfaces of substrate carbon particles. The crystallites cause dissociative adsorption of the oxygen molecules so that four electrons are produced per molecule during the reduction reaction which is involved. In an alkaline electrolyte, the catalyst metals such as Pd, lr, Ag, Rh and Ptshow no tendency to poison the counter electrode (counter relative to the other electrode) since each of those metals is a good catalyst for both electrodes. Suitable fuels include methanol (CH 3 OH), formaldehyde (HCHO), and formic acid (HCOOH).
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公开(公告)号：EP0090358A3
公开(公告)日：1986-01-15
申请号：EP83102946
申请日：1983-03-24
申请人： Hitachi, Ltd.
CPC分类号： H01M4/881 , H01M4/8668 , H01M4/8842 , H01M4/92 , H01M8/0289 , H01M8/08 , H01M8/1004 , H01M8/1009 , Y02P70/56
摘要： A methanol fuel cell includes an electrolyte ion exchange membrane (1) integrated with an oxidizer electrode (3) containing water-repellent particles on one side of the membrane (1) and a hydrophilic fuel electrode (2) containing no water-repellent particles on the other side thereof, with less contact resistance between the ion exchange membrane (1) and the electrodes (2, 3) and a three-phase boundary readily formable in the oxidizer electrode (3).
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公开(公告)号：EP0098376A3
公开(公告)日：1985-08-21
申请号：EP83104962
申请日：1983-05-19
摘要： An electrolytic system 10 is provided with a gas fed cathode 12 in contact with an electrolyte 15 to which an additive of trifluoremethane sulphonic acid (TFMSA) is added. The system can be employed in fuel cells, industrial electrolytic cells for production of gases such as chlorine, and in metal-air batteries. Preferably the cathode incorporates a catalyst such as gold, platinum, palladium, silver, or spinels of Ni and Co. The supply of fluid 18 to the anode of the fuel cell is a hydrocarbon or H 2 dissolved in NaOH. Oxygen or air is supplied 11, 12 to the cathode of the fuel cell. In the industrial electrolytic cell, the anodic source of fluid and electrolyte is brine solution, and the cathodic electrolyte is dilute caustic. In the metal-air battery, an anodic solution of NaOH is supplied to an anode of Al, Ga, Zn, etc. The cathodic solution and configuration are the same as with the fuel cell.
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公开(公告)号：EP0107612A3
公开(公告)日：1985-12-27
申请号：EP83810365
申请日：1983-08-16
CPC分类号： H01M4/86 , C25B11/0473 , C25C7/02 , H01M8/08 , H01M10/345
摘要： A porous gas-diffusion electrode having a ruthenium electrocatalyst is conditioned for operation as a hydrogen consuming anode by connecting the electrode as a cathode in a suitable electrolyte until it drops below the reversible hydrogen potential and evolves hydrogen. Preferably, the electrode is contacted with a hydrogen atmosphere prior to or at the beginning of hydrogen evolution, and conditioning may be carried out in situ in a cell in which the electrode is to operate as hydrogen consuming anode.
摘要翻译： 具有钌电催化剂的多孔气体扩散电极通过将电极作为阴极连接在适当的电解质中而调节为用作消耗氢的阳极，直到其下降到可逆氢势以下并释放氢。 优选地，在氢析出之前或开始时，电极与氢气氛接触，并且可以在电极作为氢消耗阳极操作的电池中的原位进行调理。
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公开(公告)号：EP0072038A3
公开(公告)日：1984-11-28
申请号：EP82107340
申请日：1982-08-12
申请人： Hitachi, Ltd.
发明人： Tsukui, Tsutomu , Shimizu, Toshio , Doi, Ryouta
CPC分类号： H01M8/04082 , H01M8/04119 , H01M8/04186 , H01M8/08
摘要： A fuel cell includes a cell unit (10) divided by an anode (2) and a cathode (1) into a fuel chamber (15), an electrolyte chamber (13), and an air chamber (14). As the fuel, a mixture of an alcohol and water is used, which has been mixed at a predetermined ratio and stored in a fuel tank (16) from which is is supplied to the anode chamber (15) through a conduit (18) which may contain a valve (17) controlled in accordance with the anode current. Moisture from the air chamber (14) may be extracted by means of a trap (4) and stored in a water tank (19) from which it is taken out and mixed with the alcohol stored in an alcohol tank (20).
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公开(公告)号：EP0073044A3
公开(公告)日：1983-09-28
申请号：EP82107655
申请日：1982-08-20
申请人： Hitachi, Ltd.
发明人： Tsukui, Tsutomu , Shimizu, Toshio , Doi, Ryouta
CPC分类号： H01M8/02 , H01M8/04156 , H01M8/04186
摘要： A fuel cell battery of an acidic electrolyte type comprises means (7 ... 9) for controlling the flow rate of an oxygen-containing gas, such as air, to be fed to an oxidant electrode (3) of the fuel cell battery in a quantity to completely remove water that is formed on the oxidant electrode (3) by the reaction between fuel and the oxidant from the oxidant electrode. The fuel cell battery prevents lowering of the battery performance due to accumulated water on the oxidant electrode (3). Also disclosed is means (14) for removing the gas formed at the fuel electrode (2) of the fuel cell from the fuel chamber (5).
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公开(公告)号：EP0074111A3
公开(公告)日：1983-07-13
申请号：EP82108208
申请日：1982-09-06
发明人： Kahara, Toshiki , Matsuda, Shinpei , Ishii, Kenzo , Takeuchi, Seizi , Imahashi, Jinichi , Honji, Akio
CPC分类号： H01M8/0293 , Y02P70/56
摘要： IN a fuel cell comprising an electrolyte-retaining matrix (3) interposed between a pair of gas-diffusion electrodes (1,2), the matrix (3) comprises particles (3a) of fibers of a substance unreactive with phosphoric acid and having electron-insulating properties and an inorganic binder (3b).
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公开(公告)号：EP0068508A3
公开(公告)日：1983-07-06
申请号：EP82105839
申请日：1982-06-30
申请人： Hitachi, Ltd.
CPC分类号： H01M8/1009 , H01M8/0289 , H01M8/08
摘要： A methanol fuel cell wherein a positive electrode (2) and a negative electrode (1) are disposed in contact with a solid film (3) which exhibits a hydrogen ion- and/ or hydronium ion-conductivity. The methanol permeability coefficient of the solid film (3) of the methanol fuel cell is at most 1 x 10- 6 mol/mol/ℓ).min.cm 2 .
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