Post by
3.1417 on Feb 08, 2024 2:57pm
FCEL, XOM patents granted Jan 30 2024
Operation of molten carbonate fuel cells with enhanced COutilization
Patent number: 11888187
Abstract: Molten carbonate fuel cells (MCFCs) are operated to provide enhanced CO2 utilization. This can increase the effective amount of carbonate ion transport that is achieved. The enhanced CO2 utilization is enabled in part by operating an MCFC under conditions that cause transport of alternative ions across the electrolyte. The amount of alternative ion transport that occurs during enhanced CO2 utilization can be mitigated by using a more acidic electrolyte.
Type: Grant
Filed: November 26, 2019
Date of Patent: January 30, 2024
Assignees: ExxonMobil Technology and Engineering Company, FuelCell Energy, Inc.
Inventors: Abdelkader Hilmi, Timothy A. Barckholtz, Jonathan Rosen, Heather A. Elsen, Gabor Kiss, Carl A. Willman, Chao-Yi Yuh, Hossein Ghezel-Ayagh, Timothy C. Geary
Operation of molten carbonate fuel cells with high electrolyte fill level
Patent number: 11888199
Abstract: An elevated target amount of electrolyte is used to initially fill a molten carbonate fuel cell that is operated under carbon capture conditions. The increased target electrolyte fill level can be achieved in part by adding additional electrolyte to the cathode collector prior to start of operation. The increased target electrolyte fill level can provide improved fuel cell performance and lifetime when operating a molten carbonate fuel cell at high current density with a low-CO2 content cathode input stream and/or when operating a molten carbonate fuel cell at high CO2 utilization.
Type: Grant
Filed: February 22, 2022
Date of Patent: January 30, 2024
Assignees: ExxonMobil Technology and Engineering Company, FUELCELL ENERGY, INC.
Inventors: Jonathan Rosen, Heather A. Elsen, Gabor Kiss, William A. Lamberti, William C. Horn, Anding Zhang, Timothy C. Geary, Adam Franco, Abdelkader Hilmi