EP1194966A2 - Pile a combustible a membrane electrolytique polymere haute temperature (htm), centrale a piles a combustible htm, et procede pour faire fonctionner une pile a combustible htm et/ou une centrale a piles a combustible htm - Google Patents

Pile a combustible a membrane electrolytique polymere haute temperature (htm), centrale a piles a combustible htm, et procede pour faire fonctionner une pile a combustible htm et/ou une centrale a piles a combustible htm

Info

Publication number
EP1194966A2
EP1194966A2 EP00952893A EP00952893A EP1194966A2 EP 1194966 A2 EP1194966 A2 EP 1194966A2 EP 00952893 A EP00952893 A EP 00952893A EP 00952893 A EP00952893 A EP 00952893A EP 1194966 A2 EP1194966 A2 EP 1194966A2
Authority
EP
European Patent Office
Prior art keywords
fuel cell
htm
cell system
htm fuel
stack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00952893A
Other languages
German (de)
English (en)
Inventor
Manfred Baldauf
Rittmar Von Helmolt
Manfred Poppinger
Meike Reizig
Rolf BRÜCK
Joachim Grosse
Armin Datz
Jörg-Roman KONIECZNY
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Vitesco Technologies Lohmar Verwaltungs GmbH
Original Assignee
Emitec Gesellschaft fuer Emissionstechnologie mbH
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19930875A external-priority patent/DE19930875B4/de
Priority claimed from DE19962679A external-priority patent/DE19962679A1/de
Application filed by Emitec Gesellschaft fuer Emissionstechnologie mbH, Siemens AG filed Critical Emitec Gesellschaft fuer Emissionstechnologie mbH
Publication of EP1194966A2 publication Critical patent/EP1194966A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04291—Arrangements for managing water in solid electrolyte fuel cell systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
    • H01M8/04225—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during start-up
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
    • H01M8/04302—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
    • H01M8/2425—High-temperature cells with solid electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H01M8/04029—Heat exchange using liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
    • H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
    • H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

Definitions

  • High-temperature polymer electrolyte membrane (HTM) fuel cell HTM fuel cell system
  • method for operating an HTM fuel cell and / or an HTM fuel cell system HTM fuel cell system
  • the invention relates to a high-temperature polymer electrolyte membrane (HTM) fuel cell, a system with HTM fuel cells and a method for operating an HTM fuel cell and / or HTM fuel cell system.
  • HTM high-temperature polymer electrolyte membrane
  • a disadvantage of the PEM fuel cell is, among other things, its sensitivity to CO-containing process gas and its dependence on the amount of water present in the cell, which among other things means that the process gases have to be humidified externally so that the membrane does not dry out.
  • a membrane is known from WO 96/13872 A1, whose proton conductivity does not drop to temperatures below the
  • Boiling point of water is limited.
  • a membrane is known from EP 0787 368 B1, on the surface of which finely divided, catalytically active metal particles are applied.
  • the object of the present invention is to provide a fuel cell and / or a fuel cell system which is conceptually similar to the PEM fuel cell, but which overcomes its main disadvantages and its dependence on the water content in the cell. It is also an object of the present invention to provide a method for operating such a fuel cell and / or such a fuel cell system.
  • the present invention relates to a high-temperature polymer electrolyte membrane (HTM) fuel cell which operates essentially independently of the water content in the cell.
  • HTM high-temperature polymer electrolyte membrane
  • the invention also relates to an HTM fuel cell which has a maximum temperature difference and / or a maximum pressure drop within the fuel cell unit and / or within the fuel stack of less than / equal to 30 K or less than 150 mbar. This means that there are no pressure and / or temperature differences within the stack that are greater than 30 K / 150 mbar.
  • An HTM fuel cell that tolerates up to 10 OOOppm carbon monoxide in the process gas is also the subject of the invention.
  • the invention also relates to a method for operating an HTM fuel cell and / or an HTM fuel cell system which operates at an operating pressure of the HTM fuel stack in the range from 0.3 to 5 bar absolute and / or an operating temperature in the range 80 ° C to 300 ° C is performed.
  • the invention also relates to a method for operating an HTM fuel cell and / or an HTM fuel cell system in which the process gas contains up to 10,000 ppm of carbon monoxide, and also a method for operating an HTM fuel cell and / or HTM fuel cell system in which the maximum temperature difference and / or pressure difference in the stack is less than / equal to 30 K or 150 mbar.
  • the subject of the invention is an HTM fuel cell system with at least one HTM fuel cell unit that can be operated at an operating pressure of 0.3 to 5 bar absolute and / or at an operating temperature of 80 ° C to 300 ° C.
  • the operating pressure in the HTM fuel stack is 0.3 to 5 bar, preferably 0.5 to 3.5 bar absolute, particularly preferably 0.8 bar to 2 bar absolute.
  • An HTM (high temperature polymer electrolyte membrane) fuel cell also called HTM fuel cell unit, comprises the following components - a membrane and / or matrix which contains a self-dissociating and / or autoprotolytic electrolyte chemically and / or physically bound two Electrodes located on opposite sides of the membrane and / or matrix adjacent to at least one electrode, a reaction chamber, which is closed off from the environment by a respective pole plate and / or a corresponding edge construction, devices being provided, through the process gas into the reaction chamber can be brought in and out, - whereby the structural parts of the HTM fuel cell are designed in such a way that they can withstand low pressures of up to approx. 0.3 bar and temperatures of up to 300 ° C in the long term.
  • the inlet pressure p LUf t is less than or equal to 1.5 bar a , depending on the characteristic curve f (p) .
  • the system is operated at a voltage of 150V to 500V.
  • the operating temperature in the HTM fuel cell stack is below the operating conditions prevailing in the stack, such as the prevailing operating pressure, above the boiling point of water and below the decomposition and / or
  • Melting temperature of the structural parts of the fuel cell and is, for example, between 80 ° C and 300 ° C, preferably between 100 ° C and 230 ° C.
  • the cell does not need to be moistened or dried during normal operating conditions. However, it also means that situations can arise during start-up or during operation in which water (eg in a liquid state due to the risk of clogging of the gas diffusion pores of the electrode and / or an axial channel and rinsing out of the electrolyte) leads to reduced performance can. Rather, it is said that the HTM fuel cell operates essentially independently of the water content because it has a self-dissociating electrolyte and / or a constructional device in which water is collected, removed and / or flushed out electrolyte is temporarily stored.
  • a device or a method for discharging the liquid water from the gas conducting layer and / or from the process gas channels is advantageous because the water droplets would otherwise impede the gas flow and / or the gas diffusion in the cell and / or in the stack.
  • a water reservoir integrated in the cell or a drying agent (sponge, silica gel, calcium chloride, etc.), in which the water is held until the operating temperature has been reached and the water is vaporized with the exhaust gases from the cell.
  • a desiccant that reacts alkaline with water (such as calcium chloride) is preferred because it has an inhibiting effect on corrosion by acids present in the system, which it neutralizes.
  • an increase in the cross section of the axial disposal channels can be provided as a device, so that the water can also be discharged through the disposal channel in the liquid state.
  • the flow throughput of a process gas is increased so that the condensed product water is blown out of the cell. If the stack is housed in a pressure housing and / or with the stack open design, the cells can be aligned so that the water simply drips downwards.
  • a drying agent such as, for example, silica gel, blue gel, calcium chloride, another hygroscopic substance is integrated in the HTM fuel cell, and / or a drying device is integrated, in which air humidity can be reversibly absorbed during and after the HTM fuel cell system has been switched off is.
  • a drying device and / or a drying agent for a stack or part of a stack can also be provided.
  • An electrode comprises an active catalyst layer which contains a metallic catalyst such as platinum or an alloy of metals from the platinum group. According to one embodiment, it may also have certain solid supports, such as e.g. Have carbon fabric and / or filler such as soot particles. In one embodiment, the solid support for improving the porosity of the electrode is made of silicon carbide.
  • the electrode does not have a solid support but closes the active catalyst layer directly on the membrane and / or is incorporated into the outer layer of the membrane.
  • the electrode is applied directly to the membrane by rolling, spraying, printing with ink, etc., without using a support such as carbon paper.
  • the paste may be advantageous if the paste contains soot, so that gas line structures are embossed into the electrocatalyst through the structure of the bipolate plate.
  • a further embodiment of this embodiment is possible by using a membrane, on the surface of which finely divided catalytically active metal particles (metal fleece) are applied.
  • the membrane has a multilayer structure, as a result of which the electrolyte, for example phosphoric acid, can be better held in the membrane between the layers.
  • a barrier layer is incorporated in the edge area of the membrane.
  • the electrolyte is a Broensted acid, for example phosphoric acid and / or another self-dissociating compound.
  • the process gases in the HTM fuel cell unit and the product water are in gaseous form.
  • the devices through which process gas can be introduced and discharged into the reaction chamber are arranged in such a way that the process gas of adjacent reaction chambers can flow in countercurrent or crossflow and / or alternately from one and can be introduced into the reaction chamber from the other side.
  • the temperature gradient within the fuel cell can be kept as low as possible and possible catalyst poisoning caused by carbon monoxide at the gas inlet of a cell ⁇ ⁇ • n lQ C ⁇ N er tQ NN C ⁇ ffi V d li ⁇ ! P " ⁇ _- • ⁇ ! DJ • x) Z ⁇ « ⁇ d 3 cn d?
  • N DJ 3 doesn't DJ. tr rt ⁇ ⁇ ⁇ JO rt ⁇ ! P- • ⁇ cn rt rt rt rt y dn ⁇ P ⁇ - (PJ ⁇ P ⁇ tr DJ DJ oo ⁇ ⁇ P- ⁇ M DJ et P- s ⁇
  • a hydrogen intermediate store such as a palladium sponge, a pressure vessel and / or a hydride store, can be provided.
  • a gas cleaning system in which the exhaust gases are cleaned before leaving the system.
  • the stack is arranged in a pressure-carrying outer housing. At least one process gas is transported to the reaction on the active cell surfaces by the internal pressure prevailing in the housing.
  • the process gas is preheated before it is introduced into the HTM fuel cell stack.
  • the waste heat from the stack or another unit of the HTM fuel cell system can be used for preheating.
  • heated cooling medium is introduced at least into the primary cooling circuit when starting, so that the cooling circuit serves as a heater during starting.
  • the cooling medium of the primary cooling circuit is supplied at a temperature between 80 ° C and 130 ° C, preferably between 100 and 110 ° C.
  • the process gases and / or the cooling medium are conducted in countercurrent and / or crossflow, so that the formation of a temperature gradient within the HTM fuel cell stack is suppressed.
  • the maximum temperature difference within the fuel line unit is less than or equal to 30K.
  • the cell and / or the cooling system when the cell is switched off with process and / or inert gas, the cell and / or the cooling system is blown through and / or blown dry, so that when starting the cell is as water-free as possible and the cooling system is as empty as possible.
  • P- P 1 P- d d: " ⁇ dt! PJ ⁇ PO DJ: P- P- DJ d: P- ⁇ ⁇ ⁇ ⁇ P- d: P- P>: r- 1 rt PJ. ⁇ ⁇ 3 rt ⁇
  • the cooling circuit takes place, for example, via a heat exchanger.
  • the cooling medium of the secondary cooling circuit can be, for example, water and / or an alcohol.
  • the amount of coolant in the high-temperature polymer fuel cell can be calculated, for example, as follows:
  • V K ü h iiuft [m 3 / h] (Power [kW] x 3600) / (cp Lu ft x delta T x density Lu ft)
  • the HTM fuel cell system and / or at least the HTM fuel cell stack (s) contained in the system is kept at a temperature above the freezing point of the electrolyte during the rest phase of the system, so that the starting essentially, i.e. after the process gas has been introduced and a voltage has been applied, it can take place autothermally.
  • the HTM fuel cell is dried by heating during the rest phase, so that e.g. in short-term operation, when the rest and / or stress phase is short, the stack temperature in standby mode is kept essentially above the freezing point of the electrolyte. This can be achieved, for example, by setting a maintenance load during the rest phase.
  • the entire fuel cell system is referred to as a fuel cell system, which has at least one stack with at least one fuel cell unit, the corresponding process gas Supply and discharge channels, the end plates, the cooling system with coolant and the entire fuel cell stack periphery (reformers, compressors, blowers, heating for process gas preheating, etc.).
  • a fuel cell unit comprises at least one membrane and / or matrix with a chemically and / or physically bound electrolyte, two electrodes, which are located on opposite sides of the membrane and / or matrix, adjacent to at least one electrode, a reaction chamber, each of which has a pole plate and / or a corresponding edge construction against the environment is completed, devices being provided through which process gas can be introduced and removed into the reaction chamber.
  • the stack consists of at least one fuel cell unit with the associated lines and at least part of the cooling system.
  • the process gas is the gas-liquid mixture which is led through the fuel cell units and in which at least reaction gas (fuel / oxidant), inert gas and product water are present.
  • Short-term operation for example when using the system as a drive unit of a vehicle, means a shopping trip in which the vehicle must be switched off regularly for a few minutes and then restarted.
  • the invention is based on the principle of the known PEM fuel cell and overcomes its essential disadvantages by choosing a new electrolyte and changing the operating conditions, in particular the temperature and the Like the conventional PEM fuel cell, the HTM fuel cell is suitable for both stationary and mobile fuel cell systems.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

L'invention concerne une pile à combustible à membrane électrolytique polymère haute température, une centrale comprenant des piles à combustible à membrane électrolytique polymère haute température, ainsi qu'un procédé pour faire fonctionner une pile à combustible à membrane électrolytique polymère haute température et/ou une centrale à piles à combustible à membrane électrolytique polymère haute température. L'invention est fondée sur le principe de fonctionnement de la pile à combustible à membrane électrolytique polymère connue et élimine l'inconvénient présenté par une telle pile, à savoir la dépendance vis-à-vis de la teneur en eau, cela grâce à la sélection d'un nouvel électrolyte et au changement des conditions de fonctionnement, en particulier de la température et de la pression.
EP00952893A 1999-07-05 2000-07-03 Pile a combustible a membrane electrolytique polymere haute temperature (htm), centrale a piles a combustible htm, et procede pour faire fonctionner une pile a combustible htm et/ou une centrale a piles a combustible htm Withdrawn EP1194966A2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19930875 1999-07-05
DE19930875A DE19930875B4 (de) 1999-07-05 1999-07-05 Hochtemperatur-Polymer-Elektrolyt-Membran (HTM)-Brennstoffzellenanlage
DE19962679 1999-12-23
DE19962679A DE19962679A1 (de) 1999-12-23 1999-12-23 Hochtemperatur-Polymer-Elektrolyt-Membran (HTM) -Brennstoffzelle, HTM-Brennstoffzellenanlage, Verfahren zum Betreiben einer HTM-Brennstoffzelle und/oder einer HTM-Brennstoffzellenanlage
PCT/DE2000/002161 WO2001003212A2 (fr) 1999-07-05 2000-07-03 Pile a combustible a membrane electrolytique polymere haute temperature (htm), centrale a piles a combustible htm, et procede pour faire fonctionner une pile a combustible htm et/ou une centrale a piles a combustible htm

Publications (1)

Publication Number Publication Date
EP1194966A2 true EP1194966A2 (fr) 2002-04-10

Family

ID=26054050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00952893A Withdrawn EP1194966A2 (fr) 1999-07-05 2000-07-03 Pile a combustible a membrane electrolytique polymere haute temperature (htm), centrale a piles a combustible htm, et procede pour faire fonctionner une pile a combustible htm et/ou une centrale a piles a combustible htm

Country Status (6)

Country Link
US (1) US20020119357A1 (fr)
EP (1) EP1194966A2 (fr)
JP (1) JP2003504805A (fr)
CN (1) CN1367940A (fr)
CA (1) CA2378234A1 (fr)
WO (1) WO2001003212A2 (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19962684A1 (de) * 1999-12-23 2001-07-26 Siemens Ag Brennstoffzellenanlage als Antriebseinheit für ein Fahrzeug
KR100439814B1 (ko) * 2001-12-08 2004-07-12 현대자동차주식회사 물의 빙점 이하에서 고분자 전해질 연료전지의 운전방법및 장치
JP3820992B2 (ja) 2002-01-08 2006-09-13 日産自動車株式会社 燃料電池システム
DE10214565A1 (de) * 2002-03-31 2003-10-23 Siemens Ag Verfahren zur Verringerung der Degradation von HT-PEM-Brennstoffzellen und zugehörige Brennstoffzellenanlage
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WO2001003212A3 (fr) 2001-06-21
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CA2378234A1 (fr) 2001-01-11
US20020119357A1 (en) 2002-08-29

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