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1. US20200176789 - Operation of Molten Carbonate Fuel Cells With Enhanced CO2 Utilization

Office United States of America
Application Number 16695281
Application Date 26.11.2019
Publication Number 20200176789
Publication Date 04.06.2020
Publication Kind A1
IPC
H01M 8/04119
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
04082Arrangements for control of reactant parameters, e.g. pressure or concentration
04089of gaseous reactants
04119with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
H01M 8/14
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 8/04746
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
04298Processes for controlling fuel cells or fuel cell systems
04694characterised by variables to be controlled
04746Pressure; Flow
CPC
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 8/04179
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
04082Arrangements for control of reactant parameters, e.g. pressure or concentration
04089of gaseous reactants
04119with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
04156with product water removal
04179by purging or increasing flow or pressure of reactants
H01M 8/04753
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
04298Processes for controlling fuel cells or fuel cell systems
04694characterised by variables to be controlled
04746Pressure; Flow
04753of fuel cell reactants
H01M 8/145
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
144characterised by the electrolyte material
145comprising carbonates
Applicants EXXONMOBIL RESEARCH 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
Title
(EN) Operation of Molten Carbonate Fuel Cells With Enhanced CO2 Utilization
Abstract
(EN)

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.

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