Electrolyte materials, thermal battery components, and thermal batteries for intermediate temperature applications

A eutectic formulation of KOH and NaOH is used as an electrolyte or an electrolyte-separator. An anode, and/or a cathode can contain the eutectic formulation of KOH and NaOH. A battery can contain an electrolyte-separator, an anode, and/or a cathode with the eutectic formulation of KOH and NaOH. The electrolyte in the electrolyte-separator can have a melting point from about 170°C to about 300°C making it suitable for use in a thermal battery that does not require a pyrotechnic device for certain high-temperature applications.