Abstract: An integrated photovoltaic and thermal (PVT) module includes a layer of solar cells, a transparent layer, a first encapsulation layer, a second encapsulation layer, a thermally conductive and electrically insulating layer, and a thermal collector. The transparent layer is placed above the layer of solar cells. The first encapsulation layer is encapsulated in between the transparent layer and the layer of solar cells. The second encapsulation layer is encapsulated below the layer of solar cells. The second encapsulation layer conducts heat energy from the layer of solar cells. The thermally conductive and electrically insulating layer is adapted to provide electrical insulation and thermal heat transfer. The thermal collector, in contact with the thermally conductive and electrically insulating layer, is adapted to contain a heat transfer fluid. The thermally conductive and electrically insulating layer is placed in between the second encapsulation layer and the thermal collector.

Abstract: The invention is directed to an electrochemical separator structure. The structure is formed of a material that includes manganese-stabilized beta?-alumina. The manganese is present at a level of about 1% by weight to about 20% by weight. Another embodiment is directed to an energy storage device that includes the electrochemical separator structure.