Investigations of the stability of GaAs for photoelectrochemical H<sub>2</sub> evolution in acidic or alkaline aqueous electrolytes
Weilai Yu, Matthias H. Richter, Ethan Simonoff, Bruce S. Brunschwig, Nathan S. Lewis
Abstract
Etched p-GaAs electrodes retained stoichiometric surfaces and photoactivity after long-term operation of the hydrogen-evolution reaction (HER) at pH = 0/14, while p-GaAs with Pt catalyst formed As 0 -rich surfaces and lost photoactivity.
Topics & Concepts
StoichiometryAqueous solutionCatalysisElectrolyteInorganic chemistryPhotoelectrochemistryChemistryElectrochemistryElectrodeMaterials sciencePhysical chemistryOrganic chemistryAdvanced Photocatalysis TechniquesElectrocatalysts for Energy ConversionCopper-based nanomaterials and applications