Abstract
Abstract The electrochemical behaviour of different binary NiP and CoP as well as ternary NiCoP amorphous metal alloys prepared by electroless deposition has been studied to test their suitability as electrocatalyst materials for water electrolysis. Exchange current densities and Tafel slopes for the hydrogen and oxygen evolution reactions were determined from quasi-steady state polarization curves obtained in 1 M KOH and 6 M KOH solutions at temperatures ranging from 30° to 90°C. In addition, the influence of thermal, chemical and electrochemical treatments on the polarization behaviour was studied and X-ray analysis and SEM were applied for the characterization of the sample material. The electrochemical behaviour of the electroless prepared amorphous metal alloys was found to be advantageous and very similar to that already reported for the conventionally prepared amorphous materials.
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