ChemInform Abstract: Lithiation of Alumina in Molten Li/K Carbonates.

Abstract

Lithiation of Alumina in Molten Li/K Carbonates.-The title process is studied with regard to an improvement of the durability of molten carbonate fuel cells (MCFC). The corrosion rate of a highly pure sapphire plate in molten carbonates is particularly high at high temp. and low CO2 pressure. Porous layers of granular LiAlO2 are formed as corrosion products. Silica, often contained in alumina fibers, partly dissolve in the molten carbonates and hence increase the surface roughness and the corrosion rate. -(MURAI, M.; TAKIZAWA, K.; SOEJIMA, K.; SOTOUCHI, H.; J.

Carbonate Fuel Cell Matrix and Electrolyte Developments

“…Several studies in the literature have shown the particle coarsening of LiAlO 2 material in the liquid electrolyte (1)(2)(3)(4). Such coarsening appears to lower capillary force leading to drying of the matrix, resulting in accelerated increase in ohmic resistance and gas crossover.…”