Development of alpha lithium aluminate matrix for molten carbonate fuel cell

The problems of stability associated with conventional gamma lithium aluminate matrix has prompted interest in development of alpha lithium aluminate matrix for molten carbonate fuel cells (MCFCs). Preparation of alpha lithium aluminate matrix using the technique of tape casting and the characteristics of the matrix are described. A matrix with a pore size in the range 0.9–0.2 μm and a porosity of 70 vol.% can be obtained. Cell testing with the alpha matrix gives satisfactory performance, with a maximum open-circuit voltage of 1000 mV.