Hydrogen and Oxygen Overvoltages on Nickel‐Iron Alloys

Abstract

The oxygen and the hydrogen overvoltages of the iron‐nickel series of alloys were measured in molal potassium hydrate at 25° C. The hydrogen overvoltages of pure nickel and pure iron in hydrate are considerably lower than in acid. One set of constants in the formula η = a + b log i applies to the whole range of current densities for the hydrogen overvoltages ; two would be required for the oxygen.