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WO2018180675A1 - Catalyseur pour électrode, composition de formation d'électrode à diffusion gazeuse, électrode à diffusion gazeuse, ensemble film-électrode, et empilement de piles à combustible - Google Patents

Catalyseur pour électrode, composition de formation d'électrode à diffusion gazeuse, électrode à diffusion gazeuse, ensemble film-électrode, et empilement de piles à combustible Download PDF

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Publication number
WO2018180675A1
WO2018180675A1 PCT/JP2018/010725 JP2018010725W WO2018180675A1 WO 2018180675 A1 WO2018180675 A1 WO 2018180675A1 JP 2018010725 W JP2018010725 W JP 2018010725W WO 2018180675 A1 WO2018180675 A1 WO 2018180675A1
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WIPO (PCT)
Prior art keywords
electrode
catalyst
electrode catalyst
gas diffusion
core
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Ceased
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PCT/JP2018/010725
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English (en)
Japanese (ja)
Inventor
聖崇 永森
智照 水崎
中村　葉子
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NE Chemcat Corp
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NE Chemcat Corp
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90—Selection of catalytic material
    • H01M4/92—Metals of platinum group
    • 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
    • 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

  • PEFC polymer electrolyte fuel cell
  • a noble metal catalyst composed of noble metal particles of a platinum group element such as platinum (Pt) is used.
  • Pt platinum
  • Pt-supported carbon catalyst which is a powder of catalyst particles in which Pt fine particles are supported on conductive carbon powder
  • Pt / C catalyst a Pt / C catalyst having a Pt loading rate of 50 wt% manufactured by NE CHEMCAT, trade name: “NE-F50” is known.
  • the present invention A carrier containing a conductive carbon material as a constituent component, and catalyst particles supported on the carrier,
  • the catalyst particles have a core part formed on the carrier, and a shell part formed so as to cover at least a part of the surface of the core part,
  • the core portion contains Pd (zero valence)
  • the shell portion contains Pt (zero valence)
  • the carbon ratio R C (atom%) of the carrier, the ratio R Pd (atom%) of Pd (zero valence), and Pt ( 0 valence) ratio R Pt (atom%) satisfies the following formulas (1) and (2) simultaneously:
  • An electrode catalyst is provided. 2.15 ⁇ [100 ⁇ R Pd / (R Pd + R C )] ⁇ 5.00 (1) 0.45 ⁇ [R Pt / R Pd ] ⁇ 1.00 (2)
  • the measurement depth in the measurement region near the surface is larger than the thickness of the shell part of the catalyst particle, and the core part of the catalyst particle is also measured.
  • Example 1 See Example 1 below.
  • the present inventors have confirmed that the Pd component contained in the core part can also be detected from the measurement region in addition to the Pt component contained in the shell part and the carbon component which is a constituent material of the carrier.
  • the configuration of the electrode catalyst when describing the configuration of the electrode catalyst, if necessary, “the configuration of the catalyst particles supported on the support (main constituent material) / the configuration of the conductive support (main It is written " More specifically, it is expressed as “shell configuration / core configuration / support configuration”. For example, when the configuration of the electrode catalyst includes “a shell portion made of Pt, a core portion made of Pd, and a carrier made of conductive carbon”, it is expressed as “Pt / Pd / C”.
  • the value of [100 ⁇ R Pd / (R Pd + R C )] in the formula (1) is more preferably 3.30 to 4.60.
  • the value of [R Pt / R Pd ] in the formula (2) is preferably 0.45 to 0.70, and more preferably 0.60 to 0.66.
  • the core portion is made of Pd (zero valence) and the shell portion is made of Pt (zero valence) from the viewpoint of more reliably obtaining excellent catalytic activity.
  • the core part may contain Pd oxide and the shell part may contain Pt oxide as long as the catalyst particles can exhibit excellent catalytic activity.
  • the average thickness of the shell portion is 1.0 nm or less, it is possible to easily contribute to the cost reduction (low platinumization) of PEFC. Further, in this case, it is preferable to obtain a so-called base effect (ligand effect) of the core part, and it becomes easier to obtain a catalytic activity that exceeds the conventional Pt / C catalyst.
  • the average thickness of the shell portion of the electrode catalyst of the present invention is more preferably 0.2 to 0.9 nm, and more preferably 0.2 to 0.7 nm. Is more preferably 0.2 to 0.5 nm.
  • the shell layer is a layer made of Pt
  • the Pt atomic layer can have a thickness of 4 layers or less, preferably 3 layers or less, more preferably 2 layers or less, within the above average thickness range.
  • the metal bond radius of Pt is 0.139 nm
  • the average thickness of one Pt atom layer is about 0.21 nm to 0.23 nm.
  • the average particle size of the catalyst particles and the average particle size of the core portion are evaluated by an SEM image (Scanning Electron Microscopy image) or a TEM image (Transmission Electron Microscopy image), respectively. It can ask for. That is, it can be determined from the difference between the average particle diameter of the catalyst particles and the average particle diameter of the core portion.
  • the average thickness of the shell is, for example, TEM-EDX (Transmission Electron Microscopy-Energy Dispersive X-ray Spectroscopy) or TEM in the particle direction of the catalyst particles. -Obtained by determining the average particle size of the catalyst particles and the average particle size of the core by line analysis using EDX (Transmission Electron Microscopy-Energy Dispersive X-ray Spectroscopy). You can also.
  • the catalyst particles preferably have an average crystallite size of 2.5 to 16.0 nm as measured by powder X-ray diffraction (XRD). Furthermore, when the average value of the crystallite size is 2.5 nm or more, it becomes easier to form the particles serving as the core portion on the carrier, and the conditions of the formulas (1) and (2) are satisfied. Since it becomes easier to form catalyst particles on the carrier so as to satisfy them simultaneously, it is preferable. In addition, when the average value of the crystallite size is 16.0 nm or less, it becomes easier to form the core particles on the carrier in a highly dispersed state, and the conditions of the formulas (1) and (2) It is preferable to form the catalyst particles on the support so as to satisfy the above simultaneously.
  • XRD powder X-ray diffraction
  • the catalyst particles of the electrode catalyst of the present invention have an average crystallite size of 3.0 to 6.0 nm as measured by powder X-ray diffraction (XRD). Is more preferable.
  • XRD powder X-ray diffraction
  • the surreal part made of Pt of the catalyst particles has one or two Pt atomic layers, the peak of the Pt (111) plane cannot be seen by XRD.
  • the average value calculated from the peak of the surface is the average value of the crystallite size of the catalyst particles.
  • the Pt loading of the catalyst particles is preferably 0.6 to 33.0 wt%.
  • the Pt loading is 0.6 wt% or more, sufficient catalytic activity can be obtained more easily.
  • the Pt loading is 33.0 wt% or less, it becomes easier to form catalyst particles having a core-shell structure on the carrier in a highly dispersed state.
  • FIG. 1 is a schematic cross-sectional view showing a preferred embodiment of the electrode catalyst (core-shell catalyst) of the present invention.
  • FIG. 2 is a schematic cross-sectional view showing another preferred embodiment of the electrode catalyst (core-shell catalyst) of the present invention.
  • the electrode catalyst 10 of the present invention includes a carrier 2 and catalyst particles 3 having a so-called “core-shell structure” formed on the carrier 2. Further, the catalyst particle 3 has a so-called “core-shell structure” including a core part 4 formed on the carrier 2 and a shell part 6 formed on the core part 4.
  • the electrode catalyst 10 ⁇ / b> A is covered with a part of the surface of the core part 4 and the surface of the core part 4 is partially exposed within the range in which the effect of the present invention can be obtained (for example, a state in which a part 4s of the surface of the core portion 4 shown in FIG. In other words, the shell portion 6a and the shell portion 6b may be partially formed on part of the surface of the core portion 4 as in the electrode catalyst 10A shown in FIG. Furthermore, the electrode catalyst of the present invention may be in a state where the electrode catalyst 10 shown in FIG. 1 and the electrode catalyst 10A shown in FIG.
  • the shell portion 6a and the shell portion 6b may be mixed with respect to the same core portion 4 as shown in FIG. .
  • “shell part (shell parts 6, 6a, 6b ) May carry a state in which “particles of only the core portion 4 not covered” are supported (not shown).
  • the electrode catalyst 1 includes “shell part (shell parts 6, 6 a, 6 a) in addition to at least one of the above-described electrode catalyst 10 and electrode catalyst 10 A. 6b) includes particles in which only the core part 4 not covered “and” particles composed only of the constituent elements of the shell part (shell parts 6, 6a, 6b) "are independently supported. May be.
  • Carrier 2 is glassy carbon (GC), fine carbon, carbon black, graphite, carbon fiber, activated carbon, pulverized product of activated carbon, carbon nanofiber, carbon nanotube, etc., or glass or ceramics material such as oxide. It can be adopted as appropriate. Among these, a carbon-based material is preferable from the viewpoint of the adsorptivity with the core portion 4 and the BET specific surface area of the carrier 2.
  • the electrode catalyst 10 and the electrode catalyst 10A satisfy the following conditions from the viewpoint of more reliably obtaining the effects of the present invention. That is, as described above, in the electrode catalyst 10 and the electrode catalyst 10A, the average value of the crystallite size measured by powder X-ray diffraction (XRD) is preferably 2.5 to 16.0 nm. Yes. Further, as described above, the electrode catalyst 10 and the electrode catalyst 10A have a Pt loading rate of preferably 0.6 to 33.0 wt%, and a Pd loading rate of preferably 4.7 to 47. 0.0 wt%.
  • X-ray photoelectron spectroscopy is carried out under the following analysis conditions (A1) to (A5).
  • A1 X-ray source: Monochromatic AlK ⁇
  • A3) Charging correction: C1s peak energy is corrected to 284.8 eV
  • A4) Analysis area: 200 ⁇ m
  • A5) Analysis chamber pressure: about 1 ⁇ 10 ⁇ 6 Pa
  • the photoelectron extraction accuracy ⁇ of (A2) is, as shown in FIG. 3, the X-ray emitted from the X-ray source 32 is irradiated to the sample set on the sample stage 34 and is emitted from the sample.
  • the electrode catalyst 10 is produced by a method of producing Pd / Pd / core particles (core particles) containing Pd (zero valence) supported on a carrier containing a conductive carbon material as a constituent component.
  • a “shell portion forming step” for forming the shell portion 6 (or 6a, 6b) containing Pt (zero valence) so as to cover a part.
  • the electrode catalyst 10 (or 10A) is manufactured by sequentially supporting the core part 4 and the shell part 6 (6a, 6b) constituting the catalyst particle 3 (3a) as the catalyst component of the electrode catalyst on the carrier 2. Is done.
  • the method for producing the electrode catalyst 10 (10A) is not particularly limited as long as the catalyst particles 3 (3a) as the catalyst component can be supported on the carrier 2.
  • the manufacturing conditions in the core portion forming step and the shell portion forming step are as follows: the carbon ratio R C (atom%) of the carrier in the analysis region near the surface measured by X-ray photoelectron spectroscopy (XPS); The ratio R Pd (atom%) of Pd (zero valence) and the ratio R Pt (atom%) of Pt (0 valence) simultaneously satisfy the conditions of the expressions (1) and (2) described above. It is adjusted to.
  • FIG. 4 shows a gas diffusion electrode forming composition containing the electrode catalyst of the present invention, a gas diffusion electrode produced using this gas diffusion electrode forming composition, and a membrane / electrode assembly comprising this gas diffusion electrode
  • FIG. 2 is a schematic diagram showing a preferred embodiment of a fuel cell stack including a MEMBRANE ELECTRODE ASSEMBLY (hereinafter abbreviated as “MEA” as necessary).
  • the fuel cell stack 40 shown in FIG. 4 has a configuration in which the MEA 42 is a unit cell and a plurality of the unit cells are stacked.
  • the gas diffusion electrode forming composition, the anode 43 and the cathode 44, and the MEA 42, which are members of the fuel cell stack 40 including the electrode catalyst of the present invention, will be described.
  • the anode 43 which is a gas diffusion electrode, has a configuration including a gas diffusion layer 43a and a catalyst layer 43b formed on the surface of the gas diffusion layer 43a on the electrolyte membrane 45 side.
  • the cathode 44 has a gas diffusion layer (not shown) and a catalyst layer (not shown) formed on the surface of the gas diffusion layer on the electrolyte membrane 45 side.
  • the electrode catalyst of the present invention may be contained in at least one of the anode 43 and the cathode 44.
  • the gas diffusion electrode of this invention can be used as an anode and can also be used as a cathode.
  • the gas diffusion layer provided in the anode 43 serving as the gas diffusion electrode and the cathode 44 serving as the gas diffusion electrode is introduced into the gas flow path formed between the separator 46 and the anode 43 from the outside of the fuel cell stack 40.
  • This is a layer provided for diffusing the hydrogen gas and the air (oxygen gas) introduced into the gas flow path formed between the separator 48 and the cathode 44 into each catalyst layer.
  • the gas diffusion layer has a role of supporting the catalyst layer and immobilizing it on the surface of the gas diffusion electrode.
  • the member that can be used for the gas diffusion layer is not particularly limited, and a known member used for the gas diffusion layer of the fuel cell electrode can be used.
  • a known member used for the gas diffusion layer of the fuel cell electrode can be used.
  • carbon paper, carbon paper as a main raw material, and carbon powder, ion-exchanged water as optional components, and a secondary material made of polyethylene terephthalate dispersion as a binder are applied to carbon paper.
  • the Pt loading rate (wt%) and the Pd loading rate (wt%) were measured by the following methods.
  • the electrode catalyst of Example 1 was immersed in aqua regia to dissolve the metal. Next, insoluble component carbon was removed from the aqua regia. Next, aqua regia without carbon was analyzed by ICP. The results of ICP analysis are shown in Table 1.
  • Example 2 The electrode of Example 2 was prepared using the same raw materials and the same production procedure as those of Example 1 except that the analysis values shown in Table 1 were obtained for the electrode catalyst and the Pd / C powder used as the raw material. A catalyst was prepared. The electrode catalyst of Example 2 was subjected to the same XPS analysis, ICP analysis, and XRD analysis as those of the electrode catalyst of Example 1. The results are shown in Table 1.
  • Example 6 ⁇ Manufacture of electrode catalyst> ["Pt / Pd / C” powder]
  • the same “Pd / C” powder as used in Example 4 (Pd loading 30 wt%, trade name “NE-H00230-F”, manufactured by NE CHEMCAT) ⁇ is used, and the shell portion "Pt / Pd / C” powder (Pt loading 18.1 wt% (ICP analysis result), trade name "NE-H10218-BF", manufactured by NE CHEMCAT) ⁇
  • the electrode catalyst of Example 6 was prepared by the same raw material and the same production procedure as those of the electrode catalyst of Example 1, except that the analytical values shown in Table 1 were obtained for the Pd / C powder as the raw material.
  • the same XPS analysis, ICP analysis, and XRD analysis as those of the electrode catalyst of Example 1 were performed. The results are shown in Table 1.
  • Example 7 ⁇ Manufacture of electrode catalyst> ["Pt / Pd / C" powder]
  • the same “Pd / C” powder as used in Example 4 (Pd loading 30 wt%, trade name “NE-H00230-F”, manufactured by NE CHEMCAT) ⁇ is used, and the shell portion [Pt / Pd / C] powder ⁇ Pt loading 17.6 wt% (ICP analysis result), trade name “NE-H10218-BF”, manufactured by NE CHEMCAT) ⁇
  • the electrode catalyst of Example 7 was prepared in the same manner as in the electrode catalyst of Example 1, except that the analytical values shown in Table 1 were obtained. Was prepared.
  • the electrode catalyst of Example 7 was subjected to the same XPS analysis, ICP analysis, and XRD analysis as those of the electrode catalyst of Example 1. The results are shown in Table 1.
  • Example 9 Manufacture of electrode catalyst> ["Pt / Pd / C" powder]
  • the same “Pd / C” powder as used in Example 4 (Pd loading 30 wt%, trade name “NE-H00230-F”, manufactured by NE CHEMCAT) ⁇ is used, and the shell portion "Pt / Pd / C" powder (Pt loading 18.0 wt% (ICP analysis result), trade name "NE-H10218-BF", manufactured by NE CHEMCAT)) ⁇
  • the Pd / C powder (core particles) used as the raw material was the same as the electrode catalyst of Example 1 except that the analytical values shown in Table 1 were obtained.
  • Table 1 were obtained.
  • Example 11 ⁇ Manufacture of electrode catalyst> ["Pt / Pd / C" powder]
  • the same “Pd / C” powder as used in Example 4 (Pd loading 30 wt%, trade name “NE-H00230-F”, manufactured by NE CHEMCAT) ⁇ is used, and the shell portion "Pt / Pd / C” powder ⁇ Pt loading rate 18.4 wt% (ICP analysis result), trade name "NE-H10218-BF", manufactured by NE CHEMCAT) ⁇
  • ICP analysis result trade name "NE-H10218-BF" manufactured by NE CHEMCAT) ⁇
  • About the Pd / C powder (core particle) used as a raw material the same raw material as the electrode catalyst of Example 1 and the same production procedure except that the analytical values shown in Table 1 were obtained.
  • the same XPS analysis, ICP analysis, and XRD analysis as those of the electrode catalyst of Example 1 were performed. The results are shown in Table 1.
  • Example 13 Manufacture of electrode catalyst> ["Pt / Pd / C" powder] Using a “Pd / C” powder different from that used in Example 1 and Example 4 (Pd loading ratio 30 wt%, trade name “NE-K00230-F”, manufactured by NE CHEMCAT) ⁇ Example of “Pt / Pd / C” powder ⁇ Pt loading 17.9 wt% (ICP analysis result), trade name “NE-K10218-BF”, manufactured by NE CHEMCAT Co., Ltd.) ⁇ 13 electrode catalysts were prepared.
  • the Pd / C powder (core particles) used as a raw material was a carbon black used in Example 1 and a commercially available carbon black powder (specific surface area 750 to 800 m 2 / g) different from the carbon black used in Example 4. Prepared. Further, the Pd / C powder (core particles) used as the raw material was the same as the electrode catalyst of Example 1 except that the analytical values shown in Table 1 were obtained. A catalyst was prepared. For the electrode catalyst of Example 14, the same XPS analysis, ICP analysis, and XRD analysis as those of the electrode catalyst of Example 1 were performed. The results are shown in Table 1.
  • FIG. 5 is a schematic diagram showing a schematic configuration of a rotating disk electrode measuring apparatus 50 used for the rotating disk electrode method (RDE method).
  • the rotating disk electrode measuring device 50 mainly includes a measuring cell 51, a reference electrode RE, a counter electrode CE, and a rotating disk electrode WE. Furthermore, when evaluating a catalyst, electrolyte solution ES is put into the measurement cell 51.
  • the measurement cell 51 has a substantially cylindrical shape having an opening on the upper surface, and a fixing member 52 for the rotating disk electrode WE that also serves as a lid capable of gas sealing is disposed in the opening.
  • a gas sealable opening for fixing the electrode main body portion of the rotating disk electrode WE while being inserted into the measurement cell 51 is provided at the center of the fixing member 52.
  • an Ag / AgCl saturated electrode was used as the reference electrode RE, a Pt mesh with Pt black was used as the counter electrode CE, and an electrode having a diameter of 5.0 mm ⁇ and an area of 19.6 mm 2 was used as the rotating disk electrode WE. . Furthermore, using the HCl0 4 of 0.1M as the electrolyte ES.
  • the rotational speed of the rotating disk electrode WE was set to 400 rpm, 625 rpm, 900 rpm, 1225 rpm, 2025 rpm, 2500 rpm, and 3025 rpm, respectively, and oxygen reduction (ORR) current measurement was performed for each cycle.
  • ORR oxygen reduction
  • the Pt mass activity (Mass Act) value shown in Table 1 represents each electrode when the Pt mass activity (Mass Act) value of the electrode catalyst of Comparative Example 3 (conventional Pt / C catalyst) is 1.00.
  • the relative values of the Pt mass activity values of the catalysts for catalysts are shown.
  • the ECSA values shown in Table 1 are the electrode catalysts (electrodes of Examples 1 to 16) when the ECSA value of the electrode catalyst of Comparative Example 3 (conventional Pt / C catalyst) is 1.00.
  • the relative values of ECSA values of the catalyst for use and Comparative Examples 1 and 2) are shown.
  • the electrode catalysts of Examples 1 to 16 have a Pt mass activity exceeding 4 times that of the electrode catalyst of Comparative Example 3 (conventional Pt / C catalyst). It became clear that Furthermore, the electrode catalysts of Examples 1 to 16 are approximately twice as high in Pt mass activity as compared with the electrode catalysts of Comparative Examples 1 to 2 (conventional Pt / Pd / C core-shell catalyst). It became clear to have. From the above results, it was revealed that the electrode catalyst of this example has excellent catalytic activity and can contribute to the cost reduction of PEFC.

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inert Electrodes (AREA)
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Abstract

L'invention concerne un catalyseur pour électrodes (catalyseur cœur-écorce) ayant une excellente activité catalytique et capable de contribuer à réduire les coûts de PEFC. Ce catalyseur pour électrodes comprend des particules de catalyseur supportées par un support. Ces particules de catalyseur ont un cœur comprenant du Pd (valence 0) et une écorce comprenant du Pt (valence 0). Le rapport carbone Rc (% atomique) du support, le rapport Pd (valence 0) RPd (% atomique) et le rapport Pt (valence 0) RPt (% atomique), dans une zone d'analyse au voisinage de la surface mesurée par spectroscopie photoélectronique à rayons X (XPS), satisfont simultanément deux conditions : formule (1) 2,15 ≤ [100 × RPd/(RPd + Rc)] ≤ 5,00 ; et formule (2) 0,55 ≤ [RPt/RPd ] ≤ 1,00.
PCT/JP2018/010725 2017-03-28 2018-03-19 Catalyseur pour électrode, composition de formation d'électrode à diffusion gazeuse, électrode à diffusion gazeuse, ensemble film-électrode, et empilement de piles à combustible Ceased WO2018180675A1 (fr)

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JP2017063724 2017-03-28
JP2017-063724 2017-03-28

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WO2018180675A1 true WO2018180675A1 (fr) 2018-10-04

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016031251A1 (fr) * 2014-08-28 2016-03-03 エヌ・イー ケムキャット株式会社 Catalyseur pour électrode, composition pour former une électrode à diffusion de gaz, électrode à diffusion de gaz, ensemble d'électrode à membrane, et empilement de piles à combustible
WO2016157897A1 (fr) * 2015-03-31 2016-10-06 エヌ・イー ケムキャット株式会社 Catalyseur d'électrode, composition pour former une électrode à diffusion gazeuse, électrode à diffusion gazeuse, ensemble membrane-électrodes, empilement de piles à combustible, procédé de fabrication de catalyseur d'électrode et particule composite
WO2017047465A1 (fr) * 2015-09-18 2017-03-23 エヌ・イー ケムキャット株式会社 Catalyseur d'électrode, composition de formation d'électrode à diffusion de gaz, électrode à diffusion de gaz, ensemble membrane-électrode, et empilement de piles à combustible

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016031251A1 (fr) * 2014-08-28 2016-03-03 エヌ・イー ケムキャット株式会社 Catalyseur pour électrode, composition pour former une électrode à diffusion de gaz, électrode à diffusion de gaz, ensemble d'électrode à membrane, et empilement de piles à combustible
WO2016157897A1 (fr) * 2015-03-31 2016-10-06 エヌ・イー ケムキャット株式会社 Catalyseur d'électrode, composition pour former une électrode à diffusion gazeuse, électrode à diffusion gazeuse, ensemble membrane-électrodes, empilement de piles à combustible, procédé de fabrication de catalyseur d'électrode et particule composite
WO2017047465A1 (fr) * 2015-09-18 2017-03-23 エヌ・イー ケムキャット株式会社 Catalyseur d'électrode, composition de formation d'électrode à diffusion de gaz, électrode à diffusion de gaz, ensemble membrane-électrode, et empilement de piles à combustible

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