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21. 发明专利

JP2003147564A STACK STRUCTURE IN WATER ELECTROLYSIS APPARATUS USING SOLID POLYMER MEMBRANE, AND SOLID POLYMER FILM USED FOR THE APPARATUS 审中-公开
公开(公告)号：JP2003147564A
公开(公告)日：2003-05-21
申请号：JP2001344767
申请日：2001-11-09
申请人： MITSUBISHI HEAVY IND LTD
发明人： HANDA HIROKO , INOUE KATSUAKI , GOTOU MITSUFUMI , FUKAGAWA MASAYUKI , HASHIZAKI KATSUO , SHIMIZU KATSUTOSHI , YAMANE TSUKASA
IPC分类号： C25B13/00 , C25B9/00 , C25B9/20 , H01M8/06
摘要： PROBLEM TO BE SOLVED: To provide a stack structure in a water electrolysis apparatus using a solid polymer membrane which can prevent any leakage of an electrolyte solution when sealing the periphery of a solid polymer membrane held by a pair of power feeders 2 and 3 of an anode and a cathode with a separator 5 via a sealing member and which maintains high sealability. SOLUTION: In the stack structure in the water electrolysis apparatus using the solid polymer membrane in which the periphery of the solid polymer membrane held by the pair of power feeders 2 and 3 of the anode and the cathode is sealed with the separator 5 via the sealing member, a soft member 12 which has lower hardness than the sealing member or an adhesive liquid-like member 13 is interposed between the sealing member and the solid polymer membrane, or the outer edge of the solid polymer film surface-fitted with the separator 5 via the sealing member is extended outward of the outer edge of the separator 5, and a shape holding frame 15 is fixed to an expanded edge 14 which is not surface-fitted with the separator 5.

22. 发明专利

JP2003129266A GAS GENERATOR 审中-公开
公开(公告)号：JP2003129266A
公开(公告)日：2003-05-08
申请号：JP2001319862
申请日：2001-10-17
申请人： MITSUBISHI HEAVY IND LTD
发明人： YAMANE TSUKASA , HASHIZAKI KATSUO
IPC分类号： C25B1/08 , C25B9/00 , C25B9/08 , C25B9/20
摘要： PROBLEM TO BE SOLVED: To provide a gas generator wherein the hydrogen gas and the oxygen gas generated by water electrolysis can be effectively sent to the outside of a water electrolysis stack without using any special equipment, and the formation of a difference between the pressure on the positive electrode side and that on the negative electrode side can therefore be reduced. SOLUTION: This gas generator is the one provided with a water electrolysis part 1 that electrolyzes water to produce hydrogen and oxygen and a holder 102 that holds the water electrolysis part 1 in the state slant with respect the horizontal plane, wherein the water electrolysis part 1 is provided with a cell 3 using a solid polyelectrolyte membrane 6 and separators laid in a manner in which the cell 3 is sandwiched between them, wherein each separator has a first passage 4 through which the hydrogen and the water that has permeated the membrane 6 pass, and the water electrolysis part 1 has the above slant in a direction substantially the same as that in which the first passage 4 runs.

23. 发明专利

JP2002352830A FUEL CELL AND JOINT FOR IT 失效
公开(公告)号：JP2002352830A
公开(公告)日：2002-12-06
申请号：JP2001154576
申请日：2001-05-23
申请人： MITSUBISHI HEAVY IND LTD
发明人： YAMANE TSUKASA , KUDOME OSAO , TANI TOSHIHIRO
IPC分类号： H01M8/10 , H01M8/04
摘要： PROBLEM TO BE SOLVED: To supply a fuel cell wherein degradation due to electric erosion at a piping connected to the stack for generating power is hard to occur. SOLUTION: The fuel cell comprises gas supply pipings (4-1 and 6-1) for supplying the gas for power generation which is humidified, a stack (1) which generates power using the gas for power generation, and a gas supply joint piping (12) which connects the gas supply pipings (4-1 and 6-1) to the stack (1). The gas for power generation is guided into the stack (1) through the inside of the joint piping (12). At least a part (12a) of inside surfaces (12a and 12b) of the joint piping (12) is covered with a platinum group metal film (14) comprising an alloy or metal of platinum group element. The platinum group metal film (14) which is hard to suffer electric erosion protects the joint piping (12) from the electric erosion. Further, the platinum group metal film (14) functions as the catalyst which consumes a micro current from the stack (1), which is the cause of electric erosion, to decompose water into hydrogen and oxygen, preventing electric erosion.

24. 发明专利

JP2002313404A SOLID HIGH POLYMER TYPE FUEL CELL SYSTEM 失效
公开(公告)号：JP2002313404A
公开(公告)日：2002-10-25
申请号：JP2001115814
申请日：2001-04-13
申请人： MITSUBISHI HEAVY IND LTD
发明人： TANI TOSHIHIRO , OISHI MASAZUMI , YAMANE TSUKASA
IPC分类号： H01M8/10 , H01M8/04 , H01M8/06
摘要： PROBLEM TO BE SOLVED: To provide a solid high polymer type fuel cell system capable of collecting ions discharged from solid high molecular film. SOLUTION: In this solid high polymer type fuel cell system, a solid high polymer type fuel cell 2 generates water by fuel gas and oxidizer gas supplied through a fuel gas feed pipe 62 and an oxidizer gas feed pipe 70, and outputs a power. The residual amounts of the fuel gas and the oxidizer gas are discharged through a fuel gas discharge pipe 56 and an oxidizer gas discharge pipe 68. The generated water is discharged through at least either of the fuel gas discharge pipe 56 and the oxidizer gas discharge pipe 68. First ion removal units 12 and 14 are installed in at least either of the fuel gas discharge pipe 56 and the oxidizer gas discharge pipe 68 to which the generated water is discharged on a solid high polymer type fuel cell 2 side to remove ions contained in the generated water.

25. 发明专利

JP2002164075A SOLID POLYMER TYPE FUEL CELL PREVENTING ELECTROLYTIC CORROSION 失效
公开(公告)号：JP2002164075A
公开(公告)日：2002-06-07
申请号：JP2000356656
申请日：2000-11-22
申请人： MITSUBISHI HEAVY IND LTD
发明人： TANI TOSHIHIRO , YAMANE TSUKASA , KUDOME OSAO
IPC分类号： H01M8/24 , H01M8/04 , H01M8/10
摘要： PROBLEM TO BE SOLVED: To provide a fuel cell capable of preventing or reducing electrolytic corrosion. SOLUTION: The fuel cell is formed by sandwiching a fuel cell stack portion 30 between a flange and an insulator 4 having a connecting hole for gas or cooling water, the fuel cell stack portion comprising a plurality of separator 6 and generating elements (cells) 8. Mechanisms 12-1, 12-1, 22-1 and 22-2 for preventing corrosion (electrolytic corrosion) caused by a potential difference in fuel cell power generation cause extension of a creepage distance for insulation between the outermost part of the fuel cell stack portion and a conductive material on the outside of the fuel cell stack portion to reduce a corrosion current and to thereby prevent the electrolytic corrosion.

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