HYDROGEN EVOLUTION AND HYDROGEN SORPTION ON AMORPHOUS SMOOTH ME-P(X) (ME=NI, CO AND FE-NI) ELECTRODES

Hydrogen evolution reaction (HER) was studied on amorphous Co-P(x), Ni -P(x) and Fe-Ni-P(x) electrodes, prepared by an electrolytic depositio n. The activities of Ni- and Co-P(x) electrodes prepared at room tempe rature are nearly equivalent, those of Fe-Ni-P(x) are somewhat lower. Alloys prepared by the electrodeposition at room temperature are very active for the HER, while those prepared at elevated temperatures 80-9 0 degrees C are less active. It has been proved that the high activity of Me-P(x) electrodes is caused by dissolved hydrogen in the amorphou s layer in the course of the electrodeposition. Copyright (C) 1996 Els evier Science Ltd