Abstract: An alkali salt composition free from hydroxides, melting at a temperature in the region of or greater than 180.degree., and usable in its molten state as a negative electrolyte for accumulators comprising an alkali metal negative electrode and an alkali alumina separator, contains an alkali metal amide, at least one alkali halide and an alkali hydride. It may also contain aluminium amide.

Abstract: An alkali salt composition free from hydroxides, melting at a temperature in the region of or greater than 180.degree., and usable in its molten state as a negative electrolyte for accumulators comprising an alkali metal negative electrode and an alkali alumina separator, contains an alkali metal amide, at least one alkali halide and an alkali hydride. It may also contain aluminium amide.

Abstract: A process for the transfer of hydrogen to or from an organic compound comprises introducing the organic compound into an electrolysis cell containing an aqueous electrolyte and at least one working electrode consisting of a metal hydride and a counterelectrode spaced from the working electrode. An electrolysis current is passed through the cell to remove hydrogen from the metal hydride or introduce hydrogen to the metal hydride in equilibrium with the reaction with the organic compound so that evolution of gaseous hydrogen is prevented. The metal hydride consists of a first component selected from the group of titanium, zirconium, lanthanum and palladium and at least one second component selected from the group which consists of iron, nickel, cobalt, copper, chromium, manganese, vanadium, niobium and silver.