Phosphorus vacancies improve the hydrogen evolution of MoP electrocatalysts
Hui Ma, Wensi Yan, Yanlong Yu, Lihua Deng, Zhe Hong, Li Song, Lei Li
Abstract
, respectively, which are 4.1-fold and 2.5-fold higher than those of pristine MoP. Even when compared with other corresponding catalysts, the TOFs of MoP-Pv still ranked at the top. Due to the surface P vacancies, MoP-Pv possesses more electrochemically active sites and faster charge transfer capability, which all favor higher HER catalytic activities. Overall, our work validates a straightforward and vigorous strategy for improving the intrinsic HER catalytic activities of P vacancies, and also provides guidance for the development of vacancy engineering in electrocatalysts.
Topics & Concepts
OverpotentialPhosphideCatalysisVacancy defectElectrocatalystMaterials scienceElectrolyteChemical engineeringMolybdenumPhosphorusHydrogenWater splittingChemistryNanotechnologyInorganic chemistryMetallurgyElectrochemistryElectrodePhysical chemistryCrystallographyPhotocatalysisOrganic chemistryEngineeringBiochemistryElectrocatalysts for Energy ConversionAdvanced battery technologies researchFuel Cells and Related Materials