Constructing Ni_(4)W/WO_(3)/NF with strongly coupled interface for hydrogen evolution in alkaline media
作者机构：Key Laboratory for Anisotropy and Texture of Materials(MoE)School of Material Science and EngineeringNortheastern UniversityShenyang 110819China Liaoning Province Engineering Research Center for Technologies of Low-Carbon SteelmakingNortheastern UniversityShenyang 110819China
出 版 物：《Rare Metals》 (稀有金属（英文版）)
年 卷 期：2023年第42卷第12期
页 面：3945-3951页
核心收录：
学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：financially supported by the China BaoWu Low Carbon Metallurgical Innovation Foundation (No.BWLCF202113) the Fundamental Research Funds for the Central Universities (Nos.N2202012 and N2124007-1)
主 题：alkaline interface adsorption
摘 要：The pursuit of storing renewable electricity in chemical bonds has encouraged the effort toward developing efficient electrocatalysts for alkaline hydrogen ***,the additional step of water dissociation under alkaline conditions frequently limits the performance of electrocatalysts in alkaline ***,we synthesize Ni_(4)W/WO_(3) with a strongly coupled interface on the Ni foam(NF)by phase transition of NiWO_(4),to enhance the activity for alkaline hydrogen *** is discovered that the strong binding hydroxyl on WO_(3) sites facilitates the dissociation of water,which in turn promotes hydrogen evolution through the synergy effect of strong adsorption of H on Ni *** adsorption/desorption energy of Ni sites is further tuned by the formation of intermetallic *** to the three-dimensional structure and tailored composition,the Ni_(4)W/WO_(3)/NF electrocatalyst exhibits a low overpotential of 31 mV at a current density of10 mA·cm^(-2),with a Tafel slope of 38 mV·dec^(-1).This work provides new opportunities to modulate the catalytic performance of Ni-based electrocatalysts by signifying the metal-oxide interface.
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