The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 2023
Filed:
Nov. 26, 2019
Exxonmobil Technology and Engineering Company, Annandale, NJ (US);
Fuelcell Energy, Inc., Danbury, CT (US);
Abdelkader Hilmi, Bethel, CT (US);
Gabor Kiss, Hampton, NJ (US);
Rodrigo F. Blanco Gutierrez, Berkeley Heights, NJ (US);
Timothy C. Geary, Stamford, CT (US);
Ethan L. Demeter, Spring, TX (US);
Chao-Yi Yuh, New Milford, CT (US);
ExxonMobil Technology and Engineering Company, Annandale, NJ (US);
FUELCELL ENERGY, INC., Danbury, CT (US);
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 COinto 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.