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1. 发明专利

JPS61256570A FUEL CELL 失效
公开(公告)号：JPS61256570A
公开(公告)日：1986-11-14
申请号：JP9675685
申请日：1985-05-09
申请人： TOSHIBA CORP
发明人： SEKI TOSHIAKI , KONO MITSURU , KASE YOSHIHIKO , NARA HIDEYUKI
IPC分类号： H01M8/02
摘要： PURPOSE:To improve the reliability of seal by sealing the lamination face at the end of unit cell and separator with grease mainly composed of fluorine compound having the phosphoric acid resistance and heat resistance. CONSTITUTION:A separator 6 is laminated through fluorine grease 19 such as perfluoro-alcoxy resin particle, fluorine oil etc. having heat resistance and phophoric acid resistance at the end 18 of lamination seal of unit cell thus to ensure the sealing performance. Consequently, stable sealing function of lamination face can be provided resulting in improvement of the reliability and the service life.

2. 发明专利

JPS6388759A FUEL CELL 失效
公开(公告)号：JPS6388759A
公开(公告)日：1988-04-19
申请号：JP23315886
申请日：1986-10-02
申请人： TOSHIBA CORP
发明人： NARA HIDEYUKI , IYASU KYOTARO , KASE YOSHIHIKO
IPC分类号： H01M8/02
摘要： PURPOSE:To prevent a gas leakage securely and to realize a long service life, by arranging grooves at the periphery of an electrode with rib parallel to each flow passage contacting to the periphery of a gas separator plate, and plugging the porous part at the bottom of the groove with a heatproof and electrolyte- resisting micropowder, and filling a sealing material in the grooves. CONSTITUTION:The porous part at the bottom 8 of the groove 6 at the end of an electrode 2 with rib is plugged with a heatproof and electrolyte-resisting micropowder 7, and at the groove 6 at the end of the electrode 2 with rib, is furnished a mixture 9 made by mixing and kneading 30 to 60 wt% of a heatproof and electrolyte-resisting scaly graphite powder and 70 to 40 wt% of phosphoric acid as a sealing material. There fore, it is made possible to prevent securely the gas leakage from the end of the electrode 2 with rib and from the laminated surface with a gas separator plate 3 by the heatproof and electrolyte-resisting micropowder 7 and kneaded mixture 9 respectively to realize a long service life, and a fuel cell of an extremely high reliability can be produced.

3. 发明专利

JPS6388758A FUEL CELL 失效
公开(公告)号：JPS6388758A
公开(公告)日：1988-04-19
申请号：JP23315786
申请日：1986-10-02
申请人： TOSHIBA CORP
发明人： KASE YOSHIHIKO , NARA HIDEYUKI
IPC分类号： H01M8/02
摘要： PURPOSE:To prevent the gas leakage from a gap securely and to realize a long service life, by applying a sealing material which consists of a composite of a mixture, made by mixing and kneading a graphite powder and a phosphoric acid solution, and of a florine resin tape, between the end of an electrode with rib and of a gas separator plate. CONSTITUTION:Between the end of an electrode 2 with rib and a gas separator plate 3, a mixture 5 made by mixing and kneading 30 to 60 wt% of a heatproof and electrolyte-resisting sealing graphite powder and 70 to 40 wt% of phosphoric acid, and a porous florine resin tape 6, a polytetrafluoroethylene tape, for example, are furnished as a sealing material. A phosphoric acid type fuel cell laminate is composed by laminating the electrodes with rib, the gas separator plates, cooling plates, and the like in multiple layers. In such a composition, the gas leakage is prevented securely, and a long service life can be realized.

4. 发明专利

JPS61173465A FUEL CELL 失效
公开(公告)号：JPS61173465A
公开(公告)日：1986-08-05
申请号：JP1306385
申请日：1985-01-26
申请人： TOSHIBA CORP
发明人： KONO MITSURU , KASE YOSHIHIKO , SEKI TOSHIAKI
IPC分类号： H01M8/02
摘要： PURPOSE:To improve gas sealing structure at the edge of electrode to increase reliability by installing a sealing groove in parallel with a passage of fluid at the edge of an electrode with rib, and forming a gas sealing part by impregnating a resin having heat resistance, electrolyte resistance, high melting point, and high decomposition temperature into the sealing groove and solidifying the resin. CONSTITUTION:A flat plate is formed by binding carbon fibers with phenol resin, and carbonization and graphitization treatments are applied to the plate to obtain a carbon fiber porous plate. Fluid passages 4 are formed on one side of the porous plate and a sealing groove 7 is formed in parallel with the fluid passage 4 on the outside of the fluid passage 4. Polytetrafluoroethylene powder is filled in the sealing groove 7 and heated at 350 deg.C under a vacuum of 10mmHg to form a gas sealing part. When a fuel cell is constructed with the electrode with rib having this gas sealing structure, internal heat generation and decrease in effective reaction gas caused by defective gas sealing part are reduced.

5. 发明专利

JPS62278760A FUEL CELL 失效
公开(公告)号：JPS62278760A
公开(公告)日：1987-12-03
申请号：JP12020286
申请日：1986-05-27
申请人： TOSHIBA CORP
发明人： NARA HIDEYUKI , IYASU KIYOTARO , SEKI TOSHIAKI , KASE YOSHIHIKO
IPC分类号： H01M8/02
摘要： PURPOSE:To increase sealing capability by arranging a sealing member comprising a kneaded mixture of graphite and fluorine oil, and a fluorine resin tape between the end of a rib-installed electrode placed on one side of a matrix and a gas separating plate. CONSTITUTION:A pair of rib-installed electodes 2 in which gas passages are formed are palced on both sides of a matrix 1 into which electrolyte is impregnated to form a unit cell. A plurality of unit cells are stacked through a gas separating plate 3 to form a fuel cell. A sealing member comprising a kneaded mixture 5 of 30-60 wt% graphite powder and 70-40 wt% fluorine oil, and a fluorine resin tape 6 is placed between the end of the rib-installed electrode 2 and the gas separating plate 3 before the fuel cell is assembled. Thereby, elasticity and adhesion between the end of the electrode and the gas separating plate are increased. Therefore, gas leakage from the end space is surely prevented and the life of the fuel cell is lengthened.

6. 发明专利

JPS61256569A FUEL CELL 失效
公开(公告)号：JPS61256569A
公开(公告)日：1986-11-14
申请号：JP9675585
申请日：1985-05-09
申请人： TOSHIBA CORP
发明人： BIN TOSHIAKI , KONO MITSURU , KASE YOSHIHIKO , NARA HIDEYUKI
IPC分类号： H01M8/02
摘要： PURPOSE:To improve the reliability of seal by sealing the lamination face at the end section of unit cell and separator with grease mainly composed of fluorine compound having heat resistance and phosphoric acid resistance and unburnt tape of PTFE. CONSTITUTION:A separator 6 is laminated through fluorine grease 19 such as perfluoro-alcohxy resin particle, fluorine oil, etc. having heat resistance and phosphoric acid resistance and tape of unburnt tetrafluoroethylene (PTFE) to the seal end 18 of unit cell to ensure the sealing function. Consequently, stable sealing function can be provided on the lamination face resulting in improvement of reliability and service life.

7. 发明专利

JPS61185869A FUEL CELL 失效
公开(公告)号：JPS61185869A
公开(公告)日：1986-08-19
申请号：JP2675385
申请日：1985-02-14
申请人： TOSHIBA CORP
发明人： KASE YOSHIHIKO , KONO MITSURU , SEKI TOSHIAKI
IPC分类号： H01M8/02 , H01M8/24
摘要： PURPOSE:To improve reliability by improving gas seal construction of a laminated interface end portion of a unit cell by sealing uneven portions on the laminated end face of the unit cell and small clearances of the laminated interface end portion with fluoro-group rubber paint having heat proofness and electrolyte proofness. CONSTITUTION:Fluro-group rubber paint 20 having heat proofness and electro lyte proofness is coated on the small clearances 19 on a laminated interface end portion of a unit cell and large uneven portions of the laminated end por tion, and putty 18 which is a sealing material for absorbing unevenness is coated thereon to be smooth so as to obtain sealed portions. In this process, as fluoro- group rubber paint, polyamine curing rubber, peroxide curing rubber, polyol curing rubber etc. are used. Then, inside and outside of a manifold can be sealed completely.

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