PARTICLE GROWTH-BEHAVIOR OF LIALO2 CONTAINING ZRO2 IN LI NA CARBONATEELECTROLYTES/

The growth of particles of lithium aluminate (LiAlO2) as an electrolyt e retention material in molten carbonates leads to a decrease in the e lectrolyte retention ability, and so the performance of the fuel cell deteriorates. We have studied how to improve the material in order to maintain the electrolyte retention ability for a long term in Li/Na ca rbonates. As a result, we found that zirconia powder added to lithium aluminate keeps the electrolyte retention ability constant for over 70 00 h in the alkaline carbonate in a P-CO2 = 0.1 atmosphere. (C) 1998 E lsevier Science S.A.