FuelCell Energy, Inc.
STABLE ELECTROLYTE MATRIX FOR MOLTEN CARBONATE FUEL CELLS

Abstract:

A method of making an electrolyte matrix includes: preparing a slurry comprising a support material, a coarsening inhibitor, an electrolyte material, and a solvent; and drying the slurry to form an electrolyte matrix. The support material comprises lithium aluminate, the coarsening inhibitor comprises a material selected from the group consisting of MnO.sub.2, Mn.sub.2O.sub.3, TiO.sub.2, ZrO.sub.2, Fe.sub.2O.sub.3, LiFe.sub.2O.sub.3, and mixtures thereof, and the coarsening inhibitor has a particle size of about 0.005 .mu.m to about 0.5 .mu.m.