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Stable electrolyte matrix for molten carbonate fuel cells

Patent ·
OSTI ID:1735193
; ; ;

An electrolyte matrix for use with molten carbonate fuel cells having an enhanced stability and lifetime is provided. The electrolyte matrix includes lithium aluminate as a support material and a coarsening inhibitor. The coarsening inhibitor may be in the form of discrete particles or a dopant present in the support material. The coarsening inhibitor may include MnO2, Mn2O3, TiO2, ZrO2, Fe2O3, LiFe2O3, or mixtures thereof. The coarsening inhibitor prevents the formation of large pores in the electrolyte matrix during operation of the fuel cell, increasing the performance and the service lifetime of the electrolyte matrix.

Research Organization:
FuelCell Energy, Inc., Danbury, CT (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
EE0006606
Assignee:
FuelCell Energy, Inc. (Danbury, CT)
Patent Number(s):
10,756,358
Application Number:
15/343,864
OSTI ID:
1735193
Country of Publication:
United States
Language:
English

References (7)

Stability and solubility of electrolyte matrix support material for molten carbonate fuel cells journal October 1999
Particle growth behaviour of LiAlO2 containing ZrO2 in Li/Na carbonate electrolytes journal March 1998
Stability of LiAlO2 as electrolyte matrix for molten carbonate fuel cells journal October 1998
Mechanism of Crystal Growth of Lithium Aluminate Particles in Molten Lithium and Potassium Carbonates journal April 1992
Phase and microstructure stabilities of LiAlO2 in molten Li/Na carbonate for molten carbonate fuel cells journal April 2005
The Effects of Different Environments on the Thermal Stability of Powdered Samples of LiAlO[sub 2] journal January 1980
Crystal Growth of γ‐Lithium Aluminate in Molten Li/K Carbonates journal September 1996

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30 DIRECT ENERGY CONVERSION
36 MATERIALS SCIENCE