High-Temperature Electrolysis

High-temperature electrolysis, also called HTE or steam electrolysis, is a technology for producing hydrogen from water using electrolysis carried out at elevated temperatures rather than at room temperature. Because splitting water molecules requires less electrical energy as the process temperature rises, high-temperature electrolysis can use less electricity than conventional low-temperature electrolysis, and its elevated temperatures also open the process to electrolytes such as molten salts or hydroxides that would not otherwise be practical. Its material requirements are a heat source, electrodes, an electrolyte, an electrolyzer membrane and a source of electricity.