Rapid and Energetic Solid-State Metathesis Reactions for Iron, Cobalt, and Nickel Boride Formation and Their Investigation as Bifunctional Water Splitting Electrocatalysts
Janaka P. Abeysinghe, Anna F. Kölln, Edward G. Gillan
Abstract
byproduct (1412 °C). The chemically robust monoborides were examined for their ability to perform electrocatalytic water oxidation and reduction. Crystalline CoB and NiB embedded on carbon wax electrodes exhibit moderate and stable bifunctional electrocatalytic water splitting activity, while FeB only shows appreciable hydrogen evolution activity. Analysis of catalyst particles after extended electrocatalytic experiments shows that the bulk crystalline metal borides remain intact during electrochemical water-splitting reactions though surface oxygen species may impact electrocatalytic activity.
Topics & Concepts
Materials scienceBifunctionalExothermic reactionCatalysisElectrochemistryInorganic chemistryNickelChemical engineeringMetalCobaltTransition metalElectrocatalystWater splittingBorideChemistryElectrodeMetallurgyOrganic chemistryPhysical chemistryEngineeringPhotocatalysisElectrocatalysts for Energy ConversionMXene and MAX Phase MaterialsAmmonia Synthesis and Nitrogen Reduction