Investigations of the stability of etched or platinized p-InP(100) photocathodes for solar-driven hydrogen evolution in acidic or alkaline aqueous electrolytes
Weilai Yu, Matthias H. Richter, Pakpoom Buabthong, Ivan A. Moreno‐Hernandez, Carlos G. Read, Ethan Simonoff, Bruce S. Brunschwig, Nathan S. Lewis
Abstract
Illuminated etched p-InP photocathode undergoes cathodic corrosion forming metallic In 0 , while electrodeposited Pt catalyst kinetically stabilizes the electrode surface against such a corrosion pathway.
Topics & Concepts
PhotocathodeCorrosionElectrolyteAqueous solutionCathodic protectionInorganic chemistryMaterials scienceMetalHydrogenCatalysisElectrodePhotoelectrochemistryChemistryChemical engineeringElectrochemistryMetallurgyPhysical chemistryElectronOrganic chemistryQuantum mechanicsEngineeringPhysicsElectrocatalysts for Energy ConversionChalcogenide Semiconductor Thin FilmsElectrochemical Analysis and Applications