Nickel sulfide nanorods decorated on graphene as advanced hydrogen evolution electrocatalysts in acidic and alkaline media
Fangfang Zhang, Lisha Wang, Mose Park, Kyeong‐Youn Song, Hoon Choi, Hu Shi, Hoo-Jeong Lee, Huan Pang
Abstract
are obtained in the acidic and alkaline electrolytes, respectively. Density functional theory results indicate that the combination of NiS and Gr can optimize the adsorption energy of H* during the HER process. The long-term durability measurement result reveals that our NiS-Gr-CC heterostructure has good electrocatalytic cycling stability (∼80 h) in both acidic and alkaline electrolytes. These results confirm that the NiS-Gr-CC heterostructure is a promising candidate for hydrogen evolution electrocatalyst with high catalytic activity.
Topics & Concepts
ElectrocatalystNickel sulfideGrapheneTafel equationNanorodCatalysisInorganic chemistryNickelElectrolyteChemical engineeringMaterials scienceSulfideChemistryElectrochemistryNanotechnologyElectrodePhysical chemistryMetallurgyOrganic chemistryEngineeringElectrocatalysts for Energy ConversionAdvanced battery technologies researchAdvanced Photocatalysis Techniques