Invention Grant
- Patent Title: Layered cathode for molten carbonate fuel cell
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Application No.: US16695278Application Date: 2019-11-26
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Publication No.: US11695122B2Publication Date: 2023-07-04
- Inventor: Abdelkader Hilmi , Gabor Kiss , Rodrigo F. Blanco Gutierrez , Timothy C. Geary , Ethan L. Demeter , Chao-Yi Yuh
- Applicant: ExxonMobil Technology and Engineering Company , FUELCELL ENERGY, INC.
- Applicant Address: US NJ Annandale
- Assignee: ExxonMobil Technology and Engineering Company,FUELCELL ENERGY, INC.
- Current Assignee: ExxonMobil Technology and Engineering Company,FUELCELL ENERGY, INC.
- Current Assignee Address: US NJ Annandale; US CT Danbury
- Agency: Shook, Hardy & Bacon LLP
- Main IPC: H01M4/86
- IPC: H01M4/86 ; H01M4/88 ; H01M4/90 ; H01M8/14

Abstract:
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 first cathode layer can be formed by sintering a layer that includes a conventional precursor material for forming a cathode, such as nickel particles. The second cathode layer can be formed by sintering a layer that includes a mixture of particles of a conventional precursor material and 1.0 vol % to 30 vol % of particles of a lithium pore-forming compound. 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.
Public/Granted literature
- US20200176784A1 Layered Cathode for Molten Carbonate Fuel Cell Public/Granted day:2020-06-04
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