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1. WO2020112806 - LAYERED CATHODE FOR MOLTEN CARBONATE FUEL CELL

Publication Number WO/2020/112806
Publication Date 04.06.2020
International Application No. PCT/US2019/063296
International Filing Date 26.11.2019
IPC
H01M 8/14 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
14Fuel cells with fused electrolytes
H01M 4/86 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
CPC
H01M 2004/8684
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
8678characterised by the polarity
8684Negative electrodes
H01M 2008/147
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
14Fuel cells with fused electrolytes
147Fuel cells with molten carbonates
H01M 4/861
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
8605Porous electrodes
861with a gradient in the porosity
H01M 4/8657
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
8647consisting of more than one material, e.g. consisting of composites
8657layered
H01M 4/8825
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
88Processes of manufacture
8825Methods for deposition of the catalytic active composition
H01M 4/8889
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
88Processes of manufacture
8878Treatment steps after deposition of the catalytic active composition or after shaping of the electrode being free-standing body
8882Heat treatment, e.g. drying, baking
8885Sintering or firing
8889Cosintering or cofiring of a catalytic active layer with another type of layer
Applicants
  • EXXONMOBIL RESEARCH AND ENGINEERING COMPANY [US]/[US]
  • FUELCELL ENERGY, INC. [US]/[US]
Inventors
  • HILMI, Abdelkader
  • KISS, Gabor
  • BLANCO GUTIERREZ, Rodrigo F.
  • GEARY, Timothy C.
  • DEMETER, Ethan L.
  • YUH, Chao-Yi
Agents
  • HOWARD, Jason O.
Priority Data
16/695,27826.11.2019US
62/773,47730.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) LAYERED CATHODE FOR MOLTEN CARBONATE FUEL CELL
(FR) CATHODE EN COUCHES POUR PILE À COMBUSTIBLE À CARBONATE FONDU
Abstract
(EN)
A layered cathode structure for a molten carbonate fuel cell is provided, along with methods of forming a layered cathode and operating a fuel cell including a layered cathode. The layered cathode can include at least a first cathode layer and a second cathode layer. The first cathode layer can correspond to a layer that is adjacent to the molten carbonate electrolyte during operation, while the second cathode layer can correspond to a layer that is adjacent to the cathode collector of the fuel cell. The resulting layered cathode structure can have an increased pore size adjacent to the cathode collector to facilitate diffusion of CO2 into the electrolyte interface, while also having a smaller pore size adjacent to the electrolyte to allow for improved electrical contact and/or reduced polarization at the interface between the electrolyte and the cathode.
(FR)
L'invention concerne une structure de cathode en couches pour une pile à combustible à carbonate fondu, ainsi que des procédés de formation d'une cathode en couches et de fonctionnement d'une pile à combustible comprenant une cathode en couches. La cathode en couches peut comprendre au moins une première couche de cathode et une seconde couche de cathode. La première couche de cathode peut correspondre à une couche qui est adjacente à l'électrolyte de carbonate fondu pendant le fonctionnement, tandis que la seconde couche de cathode peut correspondre à une couche qui est adjacente au collecteur de cathode de la pile à combustible. La structure de cathode en couches résultante peut avoir une taille de pore accrue adjacente au collecteur de cathode pour faciliter la diffusion de CO2 dans l'interface d'électrolyte, tout en ayant également une taille de pore plus petite adjacente à l'électrolyte pour permettre un contact électrique amélioré et/ou une polarisation réduite au niveau de l'interface entre l'électrolyte et la cathode.
Also published as
Latest bibliographic data on file with the International Bureau