TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Component: The anode compartment and the cathode compartment are separated by a salt bridge compartment filled with a saturated potassium chloride solution. The ammonia electrolyzer further comprises a catholyte management system for controlling the concentration and level of the catholyte. The catholyte management system comprises a pH regulator for monitoring and maintaining the concentration of potassium hydroxide (KOH) within an operation range by adding KOH. The catholyte management system comprises a fluid level regulator to monitor and maintain the level of anolyte within an operation range by adding water and KOH. The anolyte management system comprises a pH regulator for monitoring and maintaining the concentration of KOH within an operation range by adding KOH. It comprises a fluid level regulator to monitor and maintain the level of anolyte within an operation range by adding water, KOH and ammonia. The anolyte management system comprises an ammonia regulator for monitoring and maintaining the concentration of ammonia within an operation range by adding ammonia. The anolyte comprises 5-25 wt.% ammonia in a 0.5-7 M aqueous KOH solution. The catholyte is 0.5-7 M aqueous KOH solution. The anodes and the cathodes comprise a solid solution painted, pressed and sintered on a substrate. The solid solution is a solid solution of a supported electrocatalyst and PTFE. The supported electrocatalyst comprises the anode catalyst and the cathode catalyst, respectively, in the form of particles supported on a high surface area support material in the form of particles. The support material is a carbon-based support material such as carbon black, carbon nanotubes, carbon nanofibers, and carbon nanostructures. The support material is a metal oxide-based support material, such as iridium (IV) oxide, titanium dioxide or titanium dioxide nanotubes. The anode catalyst is platinum combined with iridium, ruthenium and/or nickel. The cathode catalyst is platinum or nickel. The substrate is a reinforcing net of metal cloth, a perforated metal sheet where perforations occupy 15-45% of the volume of the perforated metal sheet, or a rough metal sheet. The rough metal sheet is produced by acid etching or by sandblasting. The metal in the metal cloth, perforated metal sheet or rough metal sheet is nickel, aluminum, or titanium.    TECHNOLOGY FOCUS - METALLURGY - Preferred Material: The metal in the metal cloth, perforated metal sheet or rough metal sheet is ferritic steels, carbon steels, or stainless steel. The substrate is a type 316 stainless steel woven cloth of 10-400 mesh or a type 304 stainless steel woven cloth of 10-400 mesh.