专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明专利

JPS6023962A ELECTRODE FOR FUEL CELL 失效
公开(公告)号：JPS6023962A
公开(公告)日：1985-02-06
申请号：JP13103083
申请日：1983-07-20
申请人： HITACHI LTD
发明人： KITAMI NORIKO , KAMO YUUICHI , TAKEUCHI SEIJI , IWAMOTO KAZUO , KAWANA HIDEJIROU , HORIBA TATSUO , KUMAGAI TERUO , TAMURA KOUKI
IPC分类号： H01M4/88 , B01J23/00 , B01J37/30 , H01M4/92 , H01M4/96
摘要： PURPOSE:To improve the mechanical strength of an electrode by coating a conductive porous plate with the platinum group metal carried on a catalytic support by the ion exchange method. CONSTITUTION:The conductive carbonaceous powder that is used as a support is previously oxidized and processed. By making the powder and a complex salt solution made of platinum group metal touch each other, one type or more platinum group metals are ion-exchanged and reduced to the support. A conductive porous plate is coated with this carrying catalyst. An electrode substrate must be porous and conductive, and it must be also resistant to chemicals so as not to be corrided by fuel or electrolytes. When hydrophilic material such as carbonnaceous material is used, it must previously be processed by fluorine resin dispersion, etc. for water repellency and reinforcement. As a result, an electrode for a fuel cell with high performance and practical strength can be obtained.

12. 发明专利

JPS6020472A FUEL CELL 失效
公开(公告)号：JPS6020472A
公开(公告)日：1985-02-01
申请号：JP12977583
申请日：1983-07-15
申请人： HITACHI LTD , HITACHI CHEMICAL CO LTD
发明人： HORIBA TATSUO , KAMO YUUICHI , TAMURA KOUKI , IKEMOTO NORIO , SATOU FUMIO , NOMURA YOUICHI
IPC分类号： H01M8/02 , H01M8/24
摘要： PURPOSE:To recover noble metals from an electrode containing noble metal catalyst by separately arranging electrode part containing noble metal catalyst from other cell components. CONSTITUTION:Porous films 5 are arranged between a cathode 1 and an ion exchange membrane 2, and an anode 3 and the membrane 2. Electroconductive mold releasing agent layers 6 are placed between gas separators 4 and electrodes respectively. Only the electrode which its performance is deteriorated is removed and recovered. The battery components such as the gas separator 4 and ion exchange membrane 2 are recovered separately from electrodes and used repeatedly.

13. 发明专利

JPS59117074A Acid-electrolyte-type methanol-air fuel cell 失效
标题翻译：酸 - 电解型甲醇 - 空气燃料电池
公开(公告)号：JPS59117074A
公开(公告)日：1984-07-06
申请号：JP22590282
申请日：1982-12-24
申请人： Hitachi Ltd
发明人： KAWANA HIDEJIROU , HORIBA TATSUO , IWAMOTO KAZUO , KITAMI NORIKO , KUMAGAI TERUO , TAKEUCHI SEIJI , KAMO YUUICHI , TAMURA KOUKI
IPC分类号： H01M8/02 , H01M8/04
CPC分类号： H01M8/04089 , H01M8/0289 , H01M8/04186 , H01M8/04291
摘要： PURPOSE:To increase the performance of an acid-electrolyte-type methanol- air fuel cell by using a cation exchange membrane having a water content of within a specified range, adjusting the amount of air to be specified times as large as the theoretical amount of air necessary for chemical reaction in the cathode and making the cathode-side surface of the cation exchange membrane wet. CONSTITUTION:A cation exchange membrane 1 placed between an anode 3 and a cathode 2, has a water content of 25-50%. The amount of air supplied to an air chamber 4 is adjusted to 2-50 times as large as the theoretical amount of air necessary for chemical reaction in the cathode 2. In addition the surface of the cation exchange membrane 1 touching the cathode 2 is made wet. As a result, the rate of surface area increase of the cation exchange membrane due to its moistening can be restricted to below 3% and the resistance of the membrane can be restricted to below 0.7OMEGAcm , thereby increasing the voltage of the fuel cell. Consequently, excessive increase in the temperature of the fuel cell can be suppressed and its performance can be increased.
摘要翻译：目的：通过使用含水量在规定范围内的阳离子交换膜来提高酸性电解质型甲醇 - 空气燃料电池的性能，将空气量调整到理论量在阴极中进行化学反应所需的空气，使阳离子交换膜的阴极侧表面变湿。构成：置于阳极3和阴极2之间的阳离子交换膜1具有25-50％的含水量。供给空气室4的空气量被调节为阴极2中化学反应所需的理论空气量的2-50倍。此外，阳离子交换膜1的与阴极2接触的表面被制成湿。结果，由于其润湿而使阳离子交换膜的表面积增加率可以被限制在低于3％，并且膜的电阻可以被限制在低于0.7OMEGA·cm 2，从而增加燃料的电压细胞。因此，能够抑制燃料电池的温度过度上升，能够提高燃料电池的性能。

14. 发明专利

JPS59114768A Fuel cell 失效
标题翻译：燃料电池
公开(公告)号：JPS59114768A
公开(公告)日：1984-07-02
申请号：JP22323882
申请日：1982-12-20
申请人： Hitachi Ltd
发明人： TAKEUCHI SEIJI , KAMO YUUICHI , IWAMOTO KAZUO , HORIBA TATSUO , KAWANA HIDEJIROU , KUMAGAI TERUO , KITAMI NORIKO , TAMURA KOUKI
IPC分类号： H01M4/90 , H01M4/96
CPC分类号： H01M4/96
摘要： PURPOSE:To increase performance of a fuel cell and decrease the amount of noble metal used by kneading a catalyst obtained by supporting noble metal on the carbon carrier which is reformed by acidic electrolyte with water repellent material, and spreading it in a porous conductive member to form an air electrode. CONSTITUTION:Acidic electrolyte such as sulfuric acid is added to carbon carrier such as graphite and they are heated to reform the carbon. Noble metal is supported to the reformed carbon to make catalyst. A water repellent material such as polytetrafluoroethylene is added to the catalyst and they are kneaded. The kneaded material is spreaded to a porous conductive member such as carbon paper and dried to form an air electrode. When this air electrode is used for a fuel electrode using acidic electrolyte, conentration of electrolyte can be decreased and that of methanol can be increased. Therefore, cell performance is remarkably increased.
摘要翻译：目的：为了提高燃料电池的性能，并且通过将由贵金属负载的催化剂在由酸性电解质被重排的碳载体上憎水材料捏合而使用的贵金属的量减少，并将其扩散到多孔导电性构件中形成空气电极。构成：将酸性电解质如硫酸加入到碳载体如石墨中，并将其加热以改性碳。贵金属负载于重整碳以制成催化剂。向催化剂中加入聚四氟乙烯等防水材料，进行混炼。将捏合的材料铺展到诸如碳纸的多孔导电构件上并干燥以形成空气电极。当该空气电极用于使用酸性电解质的燃料电极时，可以降低电解质的浓度，并且可以提高甲醇的浓度。因此，电池性能显着提高。

15. 发明专利

JPS58121569A PLASTIC SECONDARY BATTERY 失效
公开(公告)号：JPS58121569A
公开(公告)日：1983-07-19
申请号：JP451082
申请日：1982-01-14
申请人： HITACHI LTD
发明人： HORIBA TATSUO , FUJITA KAZUNORI , MATSUDA SHINPEI , TAMURA KOUKI
IPC分类号： H01M4/60 , H01M6/16 , H01M10/05 , H01M10/052 , H01M10/0568 , H01M10/40
摘要： PURPOSE:To offer a plastic secondary battery excellent in cell characteristics, by making up at least one of positive and negative poles into conductive plastics, while using non-oxyacid electrolyte matter. CONSTITUTION:Taking deionization of a non-oxyacid electrolyte as an example, there are halogen iron, BF , AlCl4 , AsF6 , PF6 , SCN , SbF6 , NbF6 , TaF6 , etc., and likewise, as an example of a cation combined with these substances, there are alkaline metallic iron, ammonium ion, phosphonium ion, arsonium ion, etc. These electrolyte substances are dissolved in an organic solvent and used as an electrolyte solution. With the cation or anion doped, as plastics being alterable to be a high conductor as a negative or positive pole, polyacetylene, polyphenylene, polyethylene, polymer (P-phenylenevinylene) etc., are used, by way of example. Like this, the use of this non-oxyacid electrolyte is effective to cope with such weak points existing so far as that the plastic or an electrode is liable to oxidize at the time of charging, a self-discharge disposition is large, etc.

16. 发明专利

JPS58119175A SECONDARY BATTERY 失效
公开(公告)号：JPS58119175A
公开(公告)日：1983-07-15
申请号：JP156282
申请日：1982-01-08
申请人： HITACHI LTD
发明人： SUGIMOTO HIROYUKI , FUJITA KAZUNORI , TAMURA KOUKI , MATSUDA SHINPEI
IPC分类号： H01M10/39 , H01M12/08
摘要： PURPOSE:To enable a long-life high-temperature secondary battery to be provided by separating a molten metal and an electrolyte, which is positioned on the molten metal, owing to the difference between their specific gravities, and preparing an electrode touching a gaseous active material from a porous material so that the electrolyte, the gaseous active material and the electrode are maintained to be in contact with each other even when there is any change in the liquid level of the electrolyte. CONSTITUTION:The symbol 6 represents a positive electrode which is made in contact with an electrolyte 5, made of a porous conductive body which shows a corrosion resistance to a positive active material, and electrically connected to an upper case 2 made of a conductive material. The symbol 7 represents a gaseous-positive-active-material chamber which is provided between the positive electrode 6 and the upper case 2. The symbols 8 and 9, respectively, represent the gas inlet and the gas outlet of the chamber 7. As the electrolyte 5, a molten salt principally consisting of a product of the reaction of the battery is employed. The electrolyte 5 and a molten metal 4 which is used as a negative active material are separated owing to the difference between their specific gravities. The positive electrode 6 is made of a porous material, and has a thickness larger than the variation of the thickness of the molten-salt electrolyte 5 which is caused during charge and discharge, so that the electrolyte 5, the positive active material and the positive electrode 6 are maintained to be in contact with each other even when change of the liquid level of the electrolyte 5 is caused.

17. 发明专利

JPS5834573A LIQUID FUEL CELL 失效
公开(公告)号：JPS5834573A
公开(公告)日：1983-03-01
申请号：JP13029281
申请日：1981-08-21
申请人： HITACHI LTD
发明人： KAWANA HIDEJIROU , IWAMOTO KAZUO , HORIBA TATSUO , FUJITA KAZUNORI , TAMURA KOUKI
IPC分类号： H01M8/02 , H01M8/10
摘要： PURPOSE:To increase the voltage of a liquid fuel cell, and enhance the fuel utilizing efficiency of the battery by interposing between the anode and the cathode, either a layer prepared by stacking a plural number of ion exchange membranes, or a layer prepared by stacking an ion exchange membrane and a fuel-permeation preventing membrane. CONSTITUTION:A multi-layered film 1 prepared by stacking a plural number of ion exchange membranes prevents any direct contact between a cathode 7 and an anode 8. It also prevents any fuel contained in an anolyte chamber 2 from reaching to the cathode 7 through the anode 8. Air entering from an air inlet 5 is exhausted from an air outlet 6. Oxygen gas contained in an air chamber 4 reacts with hydrogen ions in the cathode 7 to produce water. Fuel undergoes reaction in the anode 8 to produce gas, which is exhausted from an exhaust hole 3. Hydrogen ions produced in the anode 8 reach to the cathode 7 through the ion exchange membranes. At this point, the chemical energy of the fuel is converted into electric energy. By stacking a plural pieces of ion exchange membranes as mentioned above, the fuel preventing effect and the fuel utilizing efficiency can be enhanced.

18. 发明专利

JPS575266A MANUFACTURE OF FUEL ELECTRODE FOR FUEL CELL 失效
公开(公告)号：JPS575266A
公开(公告)日：1982-01-12
申请号：JP7899680
申请日：1980-06-13
申请人： HITACHI LTD
发明人： HORIBA TATSUO , TAMURA KOUKI
IPC分类号： H01M4/88
摘要： PURPOSE:To make a catalyst to be evenly and firmly held by an electrode base, and enhance the activity of the catalyst by preparing a catalyst holding powder consisting of both a carbon powder coated with platinum, and a co-catalyst deposited over the former carbon powder, and applying a mixture of the catalyst holding powder and a binding agent to the electrode base. CONSTITUTION:A mixture of methanol and water is added with a carbon powder such as acetylene black, polyvinyl alcohol, and chloroplatinic acid. Thus prepared mixture solution is subjected to reflux heating at an appropriate temperature, before the product developed in this solution is filtered off and dried, thus platinum being deposited on the carbon powder. The above carbon powder coated with platinum, next, is dispersed in a solution of a co-catalyst such as tin, titanium, rhenium and ruthenium. After that, the dispersion is put in a container, in which an active electrode and its counter electrode are installed, so as to make the dispersion to flow, and thereby the co-catalyst is electrically deposited over the carbon powder coated with platinum. Thus obtained powder holding the co-catalyst, together with a binder such as polytetrafluoroetylene or polyvinyl chloride, is applied to an electrode base.

19. 发明专利

JPS5642967A PREPARATION OF ELECTRODE FOR FUEL CELL 失效
公开(公告)号：JPS5642967A
公开(公告)日：1981-04-21
申请号：JP11794279
申请日：1979-09-17
申请人： HITACHI LTD , HITACHI CHEMICAL CO LTD
发明人： KAHARA TOSHIKI , OKABE SHIGERU , TAMURA KOUKI
IPC分类号： H01M4/88
摘要： PURPOSE:To penetrate a catalyst into an electrode base by touching a suspension in which a catalyst, binder, and water repellent agent powders are dispersed to the base evacuating a vacuum container in which the electrode base is placed. CONSTITUTION:An electrode base 1 comprising carbon fiber fabric, porous carbon plate, or metal fiber fabric is placed on a holding plate 3 of a vacuum container 2 provided with the electrode base holding plate 3 having a plurality of passing holes. A suspension of catalyst comprising powder of platinum, palladium, silver, or nickel is sprayed on the electrode base evacuating the vacuum container 2 a vacuum outlet 4 of which is connected to an aspirator. Then a suspension containing a binder and water repellent agent such as fine powder of polytetrafluoroethylene in water is sprayed on the electrode base 1. The electrode base 1 is picked up from the vacuum container 2, and heated in nitrogen gas to obtain an electrode after drying.

20. 发明专利

JPS5593671A MANUFACTURING METHOD OF POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE CELL 失效
公开(公告)号：JPS5593671A
公开(公告)日：1980-07-16
申请号：JP86579
申请日：1979-01-06
申请人： HITACHI LTD , HITACHI CHEMICAL CO LTD
发明人： KAHARA TOSHIKI , TAMURA KOUKI , EBATO NOBORU , SATOU FUMIO , YOSHIDA TOMIO
IPC分类号： H01M4/62 , H01M4/06 , H01M4/08 , H01M6/16
摘要： PURPOSE:To obtain positive electrode having superior discharge characteristic by heating positive electrode mixed agent containing dispersant and manganese dioxide and removing dispersant and forming said mixed agent into a prescribed form. CONSTITUTION:Positive electrode substance is prepared as follows: into manganese dioxide which is heated in 360-390 deg.C as active substance, carbon powder conductive agnet as, fluoro-resin powder such as poly-tetra-fluoroethylene as binder, and surfactant as dispersing agent are mixed. Said positive electrode mixture is heated, and dispersant is volatilized, and then positive electrode mixture is formed into the positive electrode 1 in a prescribed form. As dispersant, is used non ionic surfactant such as aromatic alcohol having the number of carbons from 12 to 18, aromatic amine, and polyoxyethylene derivative. The heating temperature described above of these dispersant is 230-330 deg.C enough to volatilize dispersant. Thus, the dispersion performance of bonding agent is improved, and uniformity and molding performance of positive electrode is improved, and inconvenience due to the existence of dispersant is eliminated, and thus a positive electrode having superior discharge characteristic can be obtained.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式