Calcium and Zinc High Temperature Batteries Using Intercalation Cathodes

摘要

The research effort was directed toward generating the scientific understanding necessary for evaluating the viability of Ca2+ and Zn2+ conducting B'-alumina solid electrolytes for a new type of advanced battery system using either calcium, calcium silicon alloys, or zinc as the anode material with ionic mediation to the divalent conducting solid electrolyte being via the presence of an appropriate molten salt. The cathode used in these cells was a solid-state intercalation material consisting of immobile transition metal redox species incorporated in a B'-alumina type lattice. Excellent electrochemical reversibility was found for both calcium silicon alloys in binary calcium halide molten salts, and the proposed solid-state cathode materials.