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Journal of the Electrochemical Society, Vol.166, No.6, F357-F363, 2019
Powder Metallurgy Route to Produce Raney-Nickel Electrodes for Alkaline Water Electrolysis
A powder metallurgy route is described as a promising route to produce highly active Raney-Ni electrodes. An expanded Ni mesh was used as metallic substrate on the surface of which Raney-Ni phases were produced via a heat-treatment step using Al powder at different loads. The overpotential at -300 mA/cm(2) as well as the active surface area were determined to evaluate the electrodes. The results reveal that a high Al loading is necessary to achieve a stable electrode and a high activity for the hydrogen evolution reaction. (c) The Author(s) 2019. Published by ECS.