Single-Atom Platinum Anchored on Submonolayer MoS<sub>2–<i>x</i></sub> for Efficient Hydrogen Evolution
Wenzhuo Wu, Qingyong Tian, Yu Jia, Qun Xu
Abstract
Ideal substrates that own reasonable electronic structures and geometric conformations are necessary for the application of single-atom noble metals in catalysis. Herein, we use a remarkable submonolayer MoS 2– x substrate with unique surface properties to support single-atom Pt. Structural and electrochemical characterization revealed that the synergism between abundant S vacancies and single Pt atoms on submonolayer MoS 2– x greatly improves activity and stability during a hydrogen evolution reaction (HER), with an overpotential of 144 mV at a current density of 10 mA/cm 2 and a Tafel slope of 63 mV/dec.
Topics & Concepts
OverpotentialTafel equationPlatinumAtom (system on chip)ElectrochemistryCatalysisMaterials scienceDensity functional theorySubstrate (aquarium)HydrogenCrystallographyChemistryNanotechnologyPhysical chemistryComputational chemistryElectrodeComputer scienceBiochemistryGeologyOrganic chemistryEmbedded systemOceanographyElectrocatalysts for Energy ConversionFuel Cells and Related MaterialsAdvanced Memory and Neural Computing