FUEL CELL WITH THERMAL ENERGY STORAGE FOR FLEXIBILITY IN HYBRIDS

Materials, methods of preparing, and methods of use relating to increasing heat capacity of a solid oxide fuel cell. In at least one embodiment, the solid oxide fuel cell includes a cathode side; an anode side; and an interconnect material. The method includes increasing heat capacity of the interconnect material by modifying the interconnect material composition to increase specific heat and/or the heat associated with a solid-solid phase transition; and increasing the interconnect geometry (mass and volume) in the solid oxide fuel cell.