WO2005006477A1 - 燃料電池の運転方法 - Google Patents
燃料電池の運転方法 Download PDFInfo
- Publication number
- WO2005006477A1 WO2005006477A1 PCT/JP2004/010285 JP2004010285W WO2005006477A1 WO 2005006477 A1 WO2005006477 A1 WO 2005006477A1 JP 2004010285 W JP2004010285 W JP 2004010285W WO 2005006477 A1 WO2005006477 A1 WO 2005006477A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- anode
- electrode
- fuel cell
- supplied
- change
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000012528 membrane Substances 0.000 claims abstract description 90
- 238000010248 power generation Methods 0.000 claims abstract description 80
- 230000008859 change Effects 0.000 claims abstract description 73
- 239000003054 catalyst Substances 0.000 claims abstract description 65
- 230000001590 oxidative effect Effects 0.000 claims abstract description 48
- 229910052751 metal Inorganic materials 0.000 claims abstract description 43
- 239000002184 metal Substances 0.000 claims abstract description 43
- 239000003792 electrolyte Substances 0.000 claims abstract description 40
- 239000007800 oxidant agent Substances 0.000 claims abstract description 32
- 238000009826 distribution Methods 0.000 claims description 20
- 230000003197 catalytic effect Effects 0.000 claims description 10
- 238000011017 operating method Methods 0.000 claims description 5
- 238000011084 recovery Methods 0.000 abstract description 3
- 150000002739 metals Chemical class 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 94
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 42
- 239000002737 fuel gas Substances 0.000 description 33
- 238000010926 purge Methods 0.000 description 28
- 238000006243 chemical reaction Methods 0.000 description 24
- 238000001994 activation Methods 0.000 description 22
- 238000006722 reduction reaction Methods 0.000 description 21
- 229910052757 nitrogen Inorganic materials 0.000 description 19
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 16
- 230000004913 activation Effects 0.000 description 16
- 230000000694 effects Effects 0.000 description 12
- 239000000203 mixture Substances 0.000 description 10
- 230000009467 reduction Effects 0.000 description 10
- 238000004458 analytical method Methods 0.000 description 9
- 238000009792 diffusion process Methods 0.000 description 8
- 238000003411 electrode reaction Methods 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 239000005518 polymer electrolyte Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 238000009736 wetting Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 229910021645 metal ion Inorganic materials 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 150000004706 metal oxides Chemical class 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 150000004697 chelate complex Chemical class 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005315 distribution function Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229920006361 Polyflon Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- -1 hydrogen ions Chemical class 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- CFQCIHVMOFOCGH-UHFFFAOYSA-N platinum ruthenium Chemical compound [Ru].[Pt] CFQCIHVMOFOCGH-UHFFFAOYSA-N 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- H01M8/04223—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
-
- 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
- H01M8/04223—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
- H01M8/04228—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 shut-down
-
- 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
-
- 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
- H01M8/04—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
- H01M8/04303—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during shut-down
-
- 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
- H01M2008/1095—Fuel cells with polymeric 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
- H01M8/04—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
-
- 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
Definitions
- the present invention relates to a method for operating a fuel cell which is advantageous for maintaining a high output.
- a method of increasing the output of a fuel cell by flowing a current having a current density higher than a predetermined current density before operating the fuel cell normally, that is, a so-called break-in operation is performed.
- the break-in operation is intended to wet the electrolyte membrane at the beginning of operation.
- pure oxygen gas as the oxidizing agent to be supplied to the force source electrode, increasing the current density as much as possible and as long as possible, and running in the running-in operation will significantly improve the cell voltage. .
- Patent Document 1 focuses on the fact that when metal ions from fuel cell constituent materials or metal ions contained in the air are trapped in the electrolyte membrane, the ionic conductivity of the electrolyte membrane is reduced and the power generation performance is reduced.
- a method in which a deterioration recovery fluid containing a reducing agent having a stronger reducing power than hydrogen gas is brought into contact with the electrolyte membrane to remove metal ions attached to the electrolyte membrane and recover the fuel cell deterioration. Have been.
- Patent Document 2 discloses that a chelate is used instead of a strong reducing agent to form a chelate complex with metal ions in an electrolyte membrane, and the chelate complex is extracted out of the electrolyte membrane, and the metal is extracted from the electrolyte membrane.
- a technique for removing ions has been disclosed.
- Patent Document 3 also discloses that impurities loaded in a battery under a load with a high current density are deposited. ON is expelled from the electrolyte, mixed with the water produced by the electrode reaction, and discharged out of the battery, or the gas supply is switched between the fuel electrode and the air electrode, the current direction is reversed, and the impurity ions enter in the opposite direction.
- Disclosed is a technology of discharging by moving, or washing with an acid solution and discharging to the outside by replacing with hydrogen ions.
- Patent Document 1 Japanese Unexamined Patent Application Publication No. 2000-2005
- Patent Document 2 Japanese Unexamined Patent Application Publication No. 2000-265600
- Patent Document 3 Japanese Unexamined Patent Application Publication No. 2000-123 2 Disclosure of the Invention
- the present invention has been made in view of the above circumstances, and has as its object to provide a method of operating a fuel cell for restoring the performance of a fuel cell even when the performance of the fuel cell deteriorates. Things.
- the inventor of the present invention has also called a polymer electrolyte fuel cell in which a plurality of membrane electrode assemblies having an anode electrode and a force electrode pole sandwiching an electrolyte membrane and supporting a catalyst metal are sandwiched between the electrolyte membrane and a frequency response analyzer.
- a frequency response analyzer we are analyzing the activation of fuel cells by the electrochemical ac impedance method.
- the present inventor found that although the wetting effect of wetting the electrolyte membrane was effective for the activation treatment, it was not sufficient, and that the potential of the force electrode was reduced as much as possible during the activation treatment. In other words, it was found that bringing it closer to 0 volt, which is the standard electrode potential for the oxidation and reduction of hydrogen, is advantageous for recovering the force sword electrode that has deteriorated due to the power generation reaction.
- the potential of the force sword pole By making the potential of the force sword pole as low as possible, the The reason is not necessarily clear, but is presumed as follows from impedance analysis. That is, during the power generation operation of the fuel cell or during the stop of the power generation operation, oxidation of the catalyst metal itself or adsorption of other strong adsorbed species occurring on the surface of the catalyst metal at the cathode electrode is caused by the fuel cell. It is presumed to be a major factor in performance degradation. Therefore, if the potential of the power source electrode is set artificially to less than 0.5 volts (for example, near 0 volts) periodically or irregularly, removal of oxides or adsorbed species on the surface of the power source electrode can be prevented. The reaction can proceed, and the intrinsic reaction activity of the catalyst metal in the electrode serving as the cathode can be maintained and restored, so that the performance of the fuel cell can be prevented from deteriorating or the degraded performance characteristics can be restored.
- 0.5 volts for example, near 0 volts
- the present inventor has noticed that the potential of the power source pole is high during the power generation reaction, but the potential of the anode electrode (the potential during the power generation reaction is low and around 0 volt) is low.
- an oxidant is supplied to the power sword electrode and fuel is supplied to the anode electrode to generate power.
- perform a changing operation to change the force sword pole to the anode electrode.
- the “changed power sword pole” is the one that became the cathode pole after changing the anode pole to the force sword pole and changing the power sword pole to the anode pole.
- the “changed anode pole” is the anode pole after the change operation to change the anode pole to the force sword pole and the cathode pole to the anode pole.
- the anode electrode before the change operation can be changed to the force electrode and the force electrode before the change operation can be changed. Can be changed to anode. Then, restart the power generation with the changed settings.
- the method of operating a fuel cell according to the first invention is to operate a fuel cell equipped with a membrane electrode assembly having an electrolyte membrane, an anode electrode carrying a catalyst metal and a force source electrode while sandwiching the electrolyte membrane. Operating method of the fuel cell,
- An oxidant is supplied to the cathode electrode, fuel is supplied to the anode electrode, and power is generated.
- the front and back of the membrane electrode assembly are reversed, and the anode electrode before the reversal is changed to a force source electrode, Perform a change operation to change the power sword pole before reversal to the anode pole,
- an oxidizing agent is supplied to the changed power source pole, and a power generation restarting step of restarting power generation by supplying fuel to the changed anode pole is performed.
- the anode electrode before reversal which is a new force electrode, is used at a low electrode potential (close to 0 port relative to the standard hydrogen electrode potential), so oxide formation and other oxygen adsorption Species adsorption is suppressed, and the electrode surface maintains a clean surface state with high reaction activity. Therefore, if the anode is inverted to a force electrode, the inverted force electrode has a high reaction activity in the oxygen reduction reaction due to the clean electrode surface, and has a high output characteristic. Shows Will be. That is, when viewed as a membrane electrode assembly, the lowered output characteristics are restored.
- the fuel cell operation method according to the second invention includes a battery module including a membrane electrode assembly having an electrolyte membrane, an anode electrode carrying a catalyst metal, and a force source electrode while sandwiching the electrolyte membrane.
- a fuel cell operation method for operating a fuel cell an oxidant is supplied to a cathode electrode, and fuel is supplied to an anode electrode to generate power. Change the pole to the cathode, and change the cathode before inversion to the anode.
- an oxidizing agent is supplied to the changed power source pole, and a power generation restarting step of restarting power generation by supplying fuel to the changed anode pole is performed.
- the anode electrode before reversal can be changed to a force sword pole by reversing the front and back of the membrane electrode assembly. Can be changed to a pole. If power generation is resumed in this state, the potential at the cathode before reversal will be reduced by using it as the anode after power generation is resumed. As a result, the power generation after the reversal has the same function as the activation treatment. Therefore, it is presumed that the electrochemical reduction reaction (reduction reaction of catalytic metal oxides and adsorbed species on the catalytic metal surface) easily proceeds at the force anode before reversal, which is the new anode.
- the anode electrode before reversal which is a new power source electrode, is used at a low electrode potential (close to 0 volt with respect to the standard hydrogen electrode potential), so that oxide formation and other oxygen-adsorbed species are caused.
- the electrode surface is kept clean with high reaction activity. Therefore, if the anode pole is inverted to a force-sword pole, the inverted power-sword pole has a high reaction activity and a high output characteristic in the oxygen reduction reaction due to the clean electrode surface. become. That is, when viewed as a membrane electrode assembly, the lowered output characteristics are restored.
- the fuel cell operation method according to the third invention is characterized in that the fuel cell includes a membrane electrode assembly having an electrolyte membrane, an anode electrode carrying a catalyst metal, and a force electrode pole while sandwiching the electrolyte membrane.
- a method of operating a fuel cell that operates a fuel cell comprising:
- An oxidant is supplied to the power source electrode and fuel is supplied to the anode electrode to generate power. After a lapse of time, the polarity of the terminal of the load operated by the fuel cell is reversed, and the anode and the cathode are connected to each other. And performing a change operation for switching the supply of the oxidant and the fuel to reverse the direction of the current generated by the fuel cell.
- the electrochemical reduction reaction (reduction reaction of the catalyst metal oxide and the adsorbed species on the surface of the catalyst metal) easily proceeds at the force node before reversal, which is a new anode.
- the anode electrode before reversal which is a new force source electrode, is used at a low electrode potential (close to 0 volts with respect to the standard hydrogen electrode potential), so formation of oxides and other oxygen adsorption The adsorption by species is suppressed, and the electrode surface maintains a clean surface state with high reaction activity.
- the inverted force electrode has a high reaction activity in the oxygen reduction reaction due to the clean electrode surface, and exhibits high output characteristics. . That is, when viewed as a membrane electrode assembly, the lowered output characteristics are restored.
- FIG. 1 is a graph showing changes in cell voltage and current density before running-in, during running-in, during activation, and after activation.
- Fig. 2 shows the results of analysis by the AC impedance method.
- 5 is a graph showing changes in the membrane resistance of the electrolyte membrane and the reaction resistance of the electrode reaction after the activation operation and after the activation treatment.
- FIG. 3 is a system diagram showing a state in which an oxidizing agent is supplied to a power source electrode and fuel is supplied to an anode electrode to generate power according to the first embodiment.
- FIG. 4 shows a change according to the first embodiment, in which the front and back of the membrane electrode assembly are reversed to change the anode pole before inversion to a force sword pole and to change the force sword pole before inversion to an anode pole.
- FIG. 3 is a system diagram illustrating a state in which power is generated while an operation is performed.
- FIG. 5 is a system diagram showing a state in which an oxidant is supplied to a power source electrode of a fuel cell module and a fuel is supplied to an anode electrode according to the second embodiment to generate power.
- FIG. 6 is a system diagram showing a state in which an oxidizing agent is supplied to the force electrode of the membrane electrode assembly and fuel is supplied to the anode electrode of the membrane electrode assembly according to the third embodiment to generate power. It is. BEST MODE FOR CARRYING OUT THE INVENTION
- the anode pole and the force source pole have a catalytic metal.
- the same type or the same type can be used for the anode electrode and the cathode electrode.
- the amount of catalyst metal carried on the anode electrode and the force electrode can be substantially the same.
- the amount of catalyst metal carried on the force sword electrode before inversion can be 75 to: 125, In particular, it can be 80 to 120, 90 to: L10, 95 to 105.
- the catalyst metal a catalyst metal having a different composition or supporting amount at the anode electrode and the force electrode may be used as necessary.
- a gas distribution plate When a gas distribution plate is provided, the pressure loss of the gas distribution plate of the anode electrode before the change and the gas distribution plate of the force source electrode before the change can be made the same. As a result, it is easy to cope with the case where the anode electrode and the cathode electrode are exchanged with each other or the gas supply is exchanged.
- the pressure loss of the gas distribution plate of the anode electrode before the change is expressed relative to 100
- the pressure loss at the force sword electrode before reversal can be 75 to: I 25, and especially 8 It can be 0 to 120, 90 to 110, 95 to 105.
- Pressure loss refers to the gas pressure that decreases from the gas inlet to the gas outlet.
- the inventor of the present invention has also called a polymer electrolyte fuel cell in which a plurality of membrane electrode assemblies having an anode electrode and a force electrode pole sandwiching an electrolyte membrane and supporting a catalyst metal are sandwiched between the electrolyte membrane and a frequency response analyzer.
- an impedance analyzer we analyzed the activation of the fuel cell by the electrochemical ac impedance method.
- the electrochemical AC impedance method is a model test performed using an equivalent circuit in which the electrochemical reaction system is replaced with an electric circuit. The following is a representative example of the analysis by the AC impedance method in the model test. In this case, pure hydrogen gas (pressure: normal pressure) was supplied to the anode, and air (normal pressure) was supplied to the force sword.
- characteristic lines V5 to V9 indicate voltage
- characteristic lines A5 to A9 indicate current
- a characteristic line A5 and a characteristic line V5 in FIG. 1 show a state when power generation of the fuel cell is started.
- the characteristic line A 6 and the characteristic line V 6 in FIG. 1 show a state in which the running-in operation corresponding to the conventional technology is performed after the startup.
- the plot of ⁇ shown in Fig. 1 is the mark displayed when preparing Cole-Cole Plot.
- a characteristic line A7 and a characteristic line V7 in Fig. 1 show a state in which the power generation operation is performed after the conventional break-in operation.
- a characteristic line A8 and a characteristic line V8 in FIG. 1 show a state in which a new activation process for lowering the potential of the cathode electrode to around 0 volt (about 0.05 volt) is being performed.
- a characteristic line A 9 and a characteristic line V 9 in FIG. 1 show a state in which a normal power generation operation is performed after the activation treatment.
- AVb see Fig. 1
- the current density is as high as 0.38 amps / cm 2
- the cell voltage is inherently difficult to be high. An increase was observed.
- point 1 shows the state before the break-in operation corresponding to the prior art.
- Point 2 shows the state after the break-in operation corresponding to the prior art and before the activation treatment.
- Point 3 shows the state after the activation treatment was performed.
- Points 1, 2, and 3 were analyzed by the electrochemical impedance method.
- Figure 2 shows the results of the analysis (Cole-Cole Plot) by the electrochemical impedance method, which is displayed as a complex plane.
- the impedance Z in the electrochemical is expressed as a complex quantity having a real component R e and an imaginary component Im as shown in the following equation (1).
- Impedance Z R + j I ⁇
- the horizontal axis in FIG. 2 represents the real component of the impedance
- the vertical axis in FIG. 2 represents the imaginary component of the impedance.
- 5. 0 0 ⁇ - 0 3 means 5. 0 0 X 1 0- 3 .
- Fig. 1 As shown in Fig.
- the cell resistance is equivalent to S11—S ⁇ , and the reaction resistance of the electrode reaction at the force source pole is S2 This was equivalent to 1-S11, and the reaction resistance of the electrode reaction at the force source pole was relatively large.
- the cell resistance becomes S
- the reaction resistance of the electrode reaction was equivalent to S 2 2 -S 12, and the cell resistance and the reaction resistance of the electrode reaction were smaller than in the case of point 1. This is presumed to be because the water content of the electrolyte membrane gradually increased due to the break-in operation corresponding to the conventional technology of the fuel cell, and the reaction activity of the cathode electrode improved.
- the cell resistance is equivalent to S13-S0.
- the reaction resistance of the electrode reaction is equivalent to S 23 -S 13. It was analyzed that while the cell resistance hardly changed, the reaction resistance of the electrode reaction became smaller by an amount corresponding to AS.
- the present inventor found that although the wetting effect of wetting the electrolyte membrane is also effective for activating the fuel cell, it is not sufficient by itself, It is effective for the activation of the fuel cell to reduce the potential of the power source electrode as much as possible during the treatment, that is, to bring it close to 0 volt, which is the standard electrode potential for oxidation and reduction of hydrogen. It has been found that the deterioration of the pole is easy to recover. The reason for this is not necessarily clear, but is presumed as follows.
- the present inventor focused on the fact that although the potential of the power source electrode was high during the power generation reaction, the potential of the anode electrode (the potential during the power generation reaction was low and around 0 volt) was low.
- the following (1) to (3) were found to be effective in reducing the potential of the force sword pole degraded by the power generation reaction.
- Example 1 This was designated as Example 1.
- Example 2 The anode node before inversion should be changed to a force sword pole and the power sword pole before inversion should be changed to an anode pole by inverting the battery module on which the membrane electrode assembly is mounted. This was designated as Example 2.
- Example 3 If a change operation is performed to switch the supply of oxidant and fuel between the anode electrode and the power source electrode, the anode electrode before reversal is changed to the power source electrode, and the power source electrode before reversal is changed to the anode. Become a pole. This was designated as Example 3.
- Embodiment 1 of the present invention will be specifically described with reference to FIGS.
- 300 g of carbon black was mixed with 1 000 g of water by weight to form a mixed solution.
- the mixed solution was sufficiently stirred using a stirrer.
- PTFE tetrafluoroethylene
- Carbon paper (trade force TGP-060, thickness 180 ⁇ m, manufactured by Toray Industries, Inc.) was introduced into the carbon ink, and the carbon paper was sufficiently impregnated with the PTFE treatment liquid.
- a fuel electrode sheet was formed in the same manner.
- the composition of the catalyst metal and the amount of the catalyst metal carried were the same as those for the oxidant electrode sheet.
- the fuel electrode means an anode electrode.
- the oxidizer electrode means a force sword pole.
- An ion-exchange membrane with a thickness of 25 ⁇ m (Nafionl 11, manufactured by DuPont) was used as a solid polymer electrolyte membrane.
- a laminate was formed with the solid polymer electrolyte membrane 101 interposed between the oxidant electrode sheet and the fuel electrode sheet so that the surface of the catalyst layer was in contact with the surface of the electrolyte membrane. Further, the laminate was hot-pressed at 150 ° C and 1 OMPa for one minute to transfer the catalyst layer to the surface of the electrolyte membrane. Thereafter, the fluororesin sheet of the laminate was peeled off.
- a solid polymer electrolyte membrane is sandwiched between the anode electrode 104 and the cathode electrode 106 thus formed, and then hot-pressed at 140 ° C and 8 MPa for 3 minutes to obtain a membrane electrode assembly 102 (MEA). It was created.
- the membrane electrode assembly 1.02 (MEA) is configured by sandwiching an electrolyte membrane 101 between an anode electrode 104 and a force source electrode 106.
- the anode 104 includes a porous gas diffusion layer 301 having a gas diffusion function and an electrolyte membrane 101 out of the gas diffusion layer 301. And a catalyst layer 302 supporting a catalyst metal facing the substrate.
- the power source electrode 106 has a porous gas diffusion layer 305 having a gas diffusion function, and a catalyst layer 306 that supports a catalyst metal facing the electrolyte membrane 101 in the gas diffusion layer 305.
- the catalyst layer at the anode electrode 104 and the catalyst layer at the force electrode 106 had the same catalyst metal composition and the same amount of catalyst metal.
- a gas distribution plate 200 for supplying a fuel gas having a gas distribution function is installed so as to face the anode 104 of the membrane electrode assembly 102 (MEA), and also faces the force source electrode 106.
- a gas distribution plate 202 for supplying an oxidizing gas having a gas distribution function was assembled to constitute a single-cell battery. Power was generated using this battery. In this case, at a cell temperature of 75 ° C, air (utilization rate 40%) is supplied as an oxidizing gas to the force electrode 106, which is an air electrode, and pure hydrogen gas is used as a fuel gas to the anode 104, which is a fuel electrode. (90% utilization) were supplied at normal pressure.
- nitrogen purge refers to an operation of stopping nitrogen after purging by flowing nitrogen. The same applies to the nitrogen purge in the following description.
- the membrane / electrode assembly 102 was pulled back so that its front and back were inverted.
- the anode 104 before the inversion was changed to the cathode 106 B, and the force sword 106 before the inversion was changed to the anode 104 B.
- air utilization rate: 40%
- FIG. 4 air (utilization rate: 40%) is supplied as an oxidizing gas to the changed force electrode 106 B (corresponding to the anode 104 before the change) shown in FIG.
- Pure hydrogen gas (utilization rate 90%) was supplied as a fuel gas to the anode electrode 104 B after the change (corresponding to the power source electrode 106 before the change) at normal pressure. This restarted power generation. Further, after 10 hours of the restarted power generation, the power generation was stopped, and nitrogen was supplied to only the changed anode electrode 104B as a purge gas and purged with nitrogen. Thereafter, the membrane / electrode assembly 102 was again drawn so that the front and back of the membrane / electrode assembly 102 were inverted. After 10 hours, only the anode side after the change was purged with nitrogen. Then, power generation was restarted with the changed settings. By repeating such a change operation, power generation was performed for a total of 500 hours, and the average cell potential reduction rate per hour was calculated. The rate of decrease in the average cell potential was small, which was better than the comparative example described later.
- FIGS. 3 and 4 show a system diagram of the first embodiment.
- a fuel gas passage 1 an oxidizing gas passage 3, and a purge gas passage 6 are provided.
- the fuel gas passage 1 has an on-off valve 1X.
- the oxidizing gas passage 3 has an on-off valve 3X.
- a first check valve 10 and an on-off valve 12 are provided in series.
- a second check valve 13 and a second on-off valve 14 are provided in series.
- a third on-off valve 16 is provided in the purge gas passage 6.
- a passage 19 extending between the fuel gas passage 1, the oxidizing gas passage 3 and the purge gas passage 6 is provided, and a check valve 19a for suppressing the fuel gas from flowing toward the oxidizing gas passage 3 is provided.
- oxidizing agent A non-return valve 19 b for suppressing gas from flowing toward the fuel gas passage 1 is provided.
- the ports 12a and 12b of the first on-off valve 12 are opened by closing the third on-off valve 16 and closing the purge gas passage 6, as shown in Fig. 3.
- the fuel gas in the fuel gas passage 1 is supplied to the anode 104 through the gas distribution plate 200.
- the oxidizing gas in the oxidizing gas passage 3 is supplied to the force source pole 106 via the gas distribution plate 202. Supply. This generates power. At the time of power generation, it is necessary to prevent the fuel gas and the oxidizing gas from being mixed in the membrane electrode assembly 102 and the piping.
- the purge gas (nitrogen gas) in the purge gas passage 6 is supplied to the anode 104, the supply of fuel gas and air is stopped, and the third open / close valve 14 is closed.
- the ports 16a and 16b of the valve 16 are opened, and the ports 12a and 12b of the first on-off valve 12 are opened, so that the purge gas is supplied to the anode electrode through the purge gas passage 6. 104 can be supplied. Also, when supplying the purge gas in the purge gas passage 6 to the power source pole 106 before inversion, the supply of fuel gas and air is stopped, and the third open / close valve 12 is closed and the third open / close valve 12 is closed.
- the ports 16a and 16b of the valve 13 are opened, and the ports 14a and 14b of the second opening valve 14 are communicated with each other, so that the purge gas passes through the purge gas passage 6 before inversion. To the cathode 106.
- the catalyst layer at the force electrode 106 and the catalyst layer at the anode electrode 104 have the composition of the catalyst metal, The amounts are comparable. For this reason, the anode electrode 104 before inversion is changed to a force sword pole 106 B by reversing the front and back of the membrane electrode assembly 102, and the power sword pole 106 before inversion is changed to the anode. Even if the change operation is performed to change to the pole 104B, the fluctuation of the power generation 1 "production capacity due to the difference in the amount of the catalyst thread and the amount of the catalyst carried before and after the change operation is basically suppressed.
- the membrane electrode assembly 102 is turned upside down so that the anode electrode 104 before inversion is a force source electrode. Even when changing to 106 B and changing the force sword pole 106 before reversal to anode 104 B, the change is caused by the difference in gas pressure loss and gas distribution. You There is basically no fluctuation in power generation performance. According to the present embodiment, although a change operation for inverting the membrane electrode assembly 102 is performed, there is no operation for switching the flow paths of the fuel gas and the oxidizing gas.
- a fuel cell module 100 (see FIG. 5) was configured by assembling a plurality of single cells of the membrane electrode assembly 102 produced in Example 1.
- Example 2 also, after the cell voltage was discharged 0.0 Set 5 volts at a constant voltage for 5 minutes under the same conditions in Example 1 and the basic manner, usually 0.3 8 amperes / cm 2
- Air utilization rate: 40%
- pure hydrogen as fuel is supplied to the anode electrode 104 of the fuel cell module 100.
- Gas 90 % utilization
- the catalyst layer in the power source electrode 106 and the catalyst layer in the anode electrode 104 are composed of the catalyst metal and the catalyst metal. The amount of contribution is assumed to be about the same. The pressure loss of the gas distribution plates 200 and 202 is assumed to be about the same.
- the front and back sides of the membrane electrode assembly 102 are inverted to change the anode electrode 104 before inversion to the force sword electrode 106 and to change the force sword electrode 106 before inversion to anode.
- Even if a change operation to change to the negative electrode 104 is performed fluctuations in power generation performance due to differences in catalyst composition and catalyst loading amount before and after the change operation are basically suppressed. Furthermore, fluctuations in power generation performance due to differences in gas pressure loss and gas distribution are basically suppressed.
- a change operation for reversing the front and back of the fuel cell module 100 is performed, there is no operation for switching the flow paths of the fuel gas and the oxidizing gas.
- a single-cell battery was formed from the membrane / electrode assembly 102 produced in Example 1.
- the conditions are basically the same as in the first embodiment, that is, the cell temperature is 75 ° C., and the air (utilization rate 40%) is supplied as an oxidizing gas to the power source electrode 106.
- pure hydrogen gas utilization rate 90%
- 0. Set to 0 5 volts and discharge for 5 minutes at a constant potential 0. 3 8 amps Z cm 2 were normal power generation experiment. After 10 hours of power generation, the power generation was stopped, and only the anode 104 was purged with nitrogen to terminate the power generation process.
- the system was allowed to stand for 10 hours, and then nitrogen gas was supplied as a purge gas to the power source electrode 106 to perform nitrogen purging. Then, the gas supply was switched between the anode electrode 104 and the cathode electrode 106, and the current direction was reversed. That is, air was supplied to the anode electrode 104 before the replacement, and pure hydrogen gas was supplied to the force electrode 106 before the replacement. That is, the anode 104 before the replacement functions as the force electrode 106 after the replacement. The anode electrode 104 before the exchange will function as the force electrode 106 after the exchange. As described above, by switching the gas supply between the cathode electrode 106 and the anode electrode 104, The direction of the generated current was reversed.
- the polarity of the load operated by the power generation in the membrane electrode assembly 102 was changed accordingly, and the power generation was resumed. At the time of power generation, it is necessary to prevent the fuel gas and the oxidizing gas from being mixed in the membrane electrode assembly 102 and the piping.
- the composition of the catalyst metal and the amount of the catalyst metal carried on the catalyst layer at the force electrode 106 and the catalyst layer at the anode electrode 104 are almost the same. Have been.
- the pressure loss of the gas distribution plates 200 and 202 is assumed to be about the same. Therefore, even if the supply of gas to the anode 104 and the cathode 106 is exchanged, the fluctuation in the power generation performance due to the difference in the catalyst composition and the amount of catalyst carried before and after the exchange is not affected. , Basically, it is suppressed. Furthermore, fluctuations in power generation performance due to differences in gas pressure loss and gas distribution are basically suppressed.
- FIG. 6 shows a system diagram of the third embodiment.
- the fuel gas passage 1, the oxidizing gas passage 3, and the purge gas passage 6 shown in FIG. 6 are provided.
- the fuel gas passage 1 is provided with a first check valve 10 and a first three-way valve 42.
- the oxidizing gas passage 3 is provided with a second check valve 13 and a second three-way valve 44.
- An on-off valve 16 is provided in the purge gas passage 6.
- the first three-way valve 42 communicates with the oxidizing gas passage 3 through the second communication passage 22.
- the second three-way valve 44 communicates with the fuel gas passage 1 through the first communication passage 21.
- the port 42c of the first three-way valve 42 is closed and the ports 42a and 42b are communicated, so that the fuel gas in the fuel gas passage 1 is anodic through the gas distribution plate 200. Feed to pole 104. Also, by closing the port 44c of the second three-way valve 44 and connecting the ports 44a and 44b, the oxidizing gas in the oxidizing gas passage 3 is supplied to the power source electrode 106. . When supplying the purge gas in the purge gas passage 6 to the anode 104, the supply of fuel gas and air is stopped, the port 42c of the first three-way valve 42 is closed, and the first three-way valve 104 is closed.
- the purge gas is supplied to the anode 104 by opening the ports 42 a and 42 b of the second.
- the purge gas in the purge gas passage 6 is supplied to the force source electrode 106, By stopping the supply of fuel gas and air, closing the port 44c of the second three-way valve 44 and opening the ports 44a, 44b of the second three-way valve 44, Purge gas is supplied to the force source pole 106 via the gas distribution plate 202.
- the ports 42b of the first three-way valve 42 when supplying fuel gas to the power source electrode 106 to exchange the gas, close the ports 42b of the first three-way valve 42 and open the ports 42a and 42c.
- the fuel gas in the fuel gas passage 1 is supplied to the force source electrode 106 via the gas distribution plate 202 via the second communication passage 22.
- the ports When supplying the oxidizing gas to the anode 104, the ports are closed and the ports 44b of the second three-way valve 44 are closed, and the ports 44a, 44c. Then, the oxidizing gas in the oxidizing gas passage 3 is supplied to the anode 104 through the first communication passage 21.
- a single-cell battery was formed from the membrane / electrode assembly 102 produced in Example 1 described above, and the cell voltage was set to 0.05 volts under basically the same conditions as in Example 1 to obtain a constant voltage. in after discharge 5 minutes, 0.3 8 Anpeano cm 2 in the normal power generation experiment ⁇ Tsu. Ten hours after the power generation, the power generation was stopped, and only the anode 104 side was purged with nitrogen to complete the process. Power generation is restarted after 10 hours. In this manner, power generation was performed for a total of 500 hours in the same manner as in Example 1, and the average cell potential reduction rate per hour was calculated. The average cell potential reduction rate of the comparative example was higher than that of the example and was not so good.
- the anode 104 is used as an anode and pure hydrogen gas is supplied, and the cathode 106 is used as a power source and air is supplied. Is done.
- the solid polymer electrolyte fuel cells of Examples 1 to 3 have better power generation voltage recovery and better cell output characteristics than the comparative examples. Do you get it.
- the catalyst metal in the anode 104 and the cathode 106 is preferably platinum-ruthenium.
- the gas diffusion layer for the force electrode 106 Although the catalyst layer of the catalyst layer and the catalyst layer of the gas diffusion layer for the anode electrode 104 had the same composition of the catalyst metal and the same amount of the catalyst metal carried thereon, the present invention is not limited to this. You can put it on.
- the present invention is not limited to the embodiment described above and shown in the drawings, but can be implemented with appropriate modifications without departing from the gist. Industrial applicability
- the present invention can be used for a fuel cell power generation system for vehicles (including automobiles, trucks, buses, and trains), stationary, portable, and the like.
Landscapes
- 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)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/563,872 US20070104982A1 (en) | 2003-07-15 | 2004-07-13 | Method of operating fuel cell |
JP2005511612A JPWO2005006477A1 (ja) | 2003-07-15 | 2004-07-13 | 燃料電池の運転方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-274819 | 2003-07-15 | ||
JP2003274819 | 2003-07-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005006477A1 true WO2005006477A1 (ja) | 2005-01-20 |
Family
ID=34056090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/010285 WO2005006477A1 (ja) | 2003-07-15 | 2004-07-13 | 燃料電池の運転方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20070104982A1 (ja) |
JP (1) | JPWO2005006477A1 (ja) |
WO (1) | WO2005006477A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007517359A (ja) * | 2003-11-05 | 2007-06-28 | ユーティーシー フューエル セルズ,エルエルシー | Pem型燃料電池のための性能を向上するならし運転方法 |
JP2007200674A (ja) * | 2006-01-26 | 2007-08-09 | Toyota Motor Corp | 燃料電池スタック |
JP2007200675A (ja) * | 2006-01-26 | 2007-08-09 | Toyota Motor Corp | 燃料電池スタックの運転方法とその装置 |
JP2009054387A (ja) * | 2007-08-24 | 2009-03-12 | Toshiba Corp | 燃料電池スタックの初期化方法及び初期化装置 |
JP2012533147A (ja) * | 2009-07-09 | 2012-12-20 | コミッサリア ア レネルジー アトミーク エ オ ゼネルジ ザルタナテイヴ | プロトン交換膜燃料電池の耐用年数を延ばすための方法および装置 |
WO2015098140A1 (ja) * | 2013-12-27 | 2015-07-02 | ブラザー工業株式会社 | 燃料電池システム及び制御方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101394686B1 (ko) | 2012-12-18 | 2014-05-14 | 현대자동차주식회사 | 연료전지 스택의 성능 회복 방법 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59171474A (ja) * | 1983-03-18 | 1984-09-27 | Hitachi Ltd | 燃料電池の運転方法 |
JPH05129028A (ja) * | 1991-11-07 | 1993-05-25 | Yamaha Motor Co Ltd | 燃料電池の運転方法 |
JPH1154141A (ja) * | 1997-08-01 | 1999-02-26 | Yoyu Tansanengata Nenryo Denchi Hatsuden Syst Gijutsu Kenkyu Kumiai | 溶融炭酸塩型燃料電池 |
JP2001085037A (ja) * | 1999-09-17 | 2001-03-30 | Matsushita Electric Ind Co Ltd | 高分子電解質型燃料電池とその特性回復方法 |
WO2001099218A1 (en) * | 2000-06-22 | 2001-12-27 | International Fuel Cells, Llc | Method and apparatus for regenerating the performance of a pem fuel cell |
-
2004
- 2004-07-13 US US10/563,872 patent/US20070104982A1/en not_active Abandoned
- 2004-07-13 WO PCT/JP2004/010285 patent/WO2005006477A1/ja active Application Filing
- 2004-07-13 JP JP2005511612A patent/JPWO2005006477A1/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59171474A (ja) * | 1983-03-18 | 1984-09-27 | Hitachi Ltd | 燃料電池の運転方法 |
JPH05129028A (ja) * | 1991-11-07 | 1993-05-25 | Yamaha Motor Co Ltd | 燃料電池の運転方法 |
JPH1154141A (ja) * | 1997-08-01 | 1999-02-26 | Yoyu Tansanengata Nenryo Denchi Hatsuden Syst Gijutsu Kenkyu Kumiai | 溶融炭酸塩型燃料電池 |
JP2001085037A (ja) * | 1999-09-17 | 2001-03-30 | Matsushita Electric Ind Co Ltd | 高分子電解質型燃料電池とその特性回復方法 |
WO2001099218A1 (en) * | 2000-06-22 | 2001-12-27 | International Fuel Cells, Llc | Method and apparatus for regenerating the performance of a pem fuel cell |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007517359A (ja) * | 2003-11-05 | 2007-06-28 | ユーティーシー フューエル セルズ,エルエルシー | Pem型燃料電池のための性能を向上するならし運転方法 |
JP2007200674A (ja) * | 2006-01-26 | 2007-08-09 | Toyota Motor Corp | 燃料電池スタック |
JP2007200675A (ja) * | 2006-01-26 | 2007-08-09 | Toyota Motor Corp | 燃料電池スタックの運転方法とその装置 |
US8101312B2 (en) | 2006-01-26 | 2012-01-24 | Toyota Jidosha Kabushiki Kaisha | Fuel cell stack with improved resistance to flooding |
JP2009054387A (ja) * | 2007-08-24 | 2009-03-12 | Toshiba Corp | 燃料電池スタックの初期化方法及び初期化装置 |
JP2012533147A (ja) * | 2009-07-09 | 2012-12-20 | コミッサリア ア レネルジー アトミーク エ オ ゼネルジ ザルタナテイヴ | プロトン交換膜燃料電池の耐用年数を延ばすための方法および装置 |
WO2015098140A1 (ja) * | 2013-12-27 | 2015-07-02 | ブラザー工業株式会社 | 燃料電池システム及び制御方法 |
JP2015125987A (ja) * | 2013-12-27 | 2015-07-06 | ブラザー工業株式会社 | 固体高分子型燃料電池システム |
Also Published As
Publication number | Publication date |
---|---|
US20070104982A1 (en) | 2007-05-10 |
JPWO2005006477A1 (ja) | 2006-09-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4038723B2 (ja) | 固体高分子型燃料電池の賦活方法 | |
JP3475869B2 (ja) | 高分子電解質型燃料電池とその特性回復方法 | |
EP3208880B1 (en) | Electrochemical hydrogen pump | |
KR20040038824A (ko) | 연료전지시스템의 운전방법 및 연료전지시스템 | |
CN102170005A (zh) | 恢复pem燃料电池堆的电压损失的方法和过程 | |
JP2002270196A (ja) | 高分子電解質型燃料電池およびその運転方法 | |
JP2004139950A (ja) | 燃料電池システム | |
CA2390293A1 (en) | Method and device for improved catalytic activity in the purification of fluids | |
JP2009289681A (ja) | 燃料電池の洗浄方法 | |
WO2005006477A1 (ja) | 燃料電池の運転方法 | |
US20080026262A1 (en) | Method of improving fuel cell performance | |
CN105392925B (zh) | 氢气回收设备和操作方法 | |
JP2017168369A (ja) | 燃料電池システムの氷点下始動方法 | |
JP2004172106A (ja) | 燃料電池システムの運転方法および燃料電池システム | |
JP2000260455A (ja) | 燃料電池の劣化回復処理方法 | |
CN101728561B (zh) | 使用启动方法来延长pem燃料电池的寿命 | |
JP4733788B2 (ja) | 燃料電池システム | |
US20030224227A1 (en) | Conditioning and maintenance methods for fuel cells | |
JP4547853B2 (ja) | 高分子電解質型燃料電池の運転方法および特性回復方法 | |
JP5504726B2 (ja) | 燃料電池システム及び燃料電池の特性回復方法 | |
JP5073448B2 (ja) | 固体高分子型燃料電池の運転方法 | |
JP5073447B2 (ja) | 固体高分子型燃料電池の運転方法 | |
JP4863609B2 (ja) | 燃料電池システムおよび燃料電池システムの運転方法 | |
JP2006202643A (ja) | 燃料電池システム及び燃料電池システムの制御方法 | |
JP2004281268A (ja) | 燃料電池の運転方法および燃料電池システム |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005511612 Country of ref document: JP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2007104982 Country of ref document: US Ref document number: 10563872 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase | ||
WWP | Wipo information: published in national office |
Ref document number: 10563872 Country of ref document: US |