典型文献
Delicate surface vacancies engineering of Ru doped MOF-derived Ni-NiO@C hollow microsphere superstructure to achieve outstanding hydrogen oxidation performance
文献摘要：
Surface vacancy defects,as the bridge between theoretical structural study and the design of heteroge-nous catalysts,have captured much attention.This work develops a metal-organic framework-engaged replacement-pyrolysis approach to obtain highly dispersed Ru nanoparticles immobilized on the vacancy-rich Ni-NiO@C hollow microsphere(Ru/Ni-NiO@C).Fine annealing at 400℃introduces nickel and oxygen vacancies on Ru/Ni-NiO@C surface,resulting in an improved electrical conductivity and rapid mass-charge transfer efficiency.Ru/Ni-NiO@C with a hollow micro/nanostructure and interconnected meso-porosity favors the maximal exposure of abundant active sites and elevation of hydrogen oxidation reaction(HOR)activity.Experimental results and density functional theory(DFT)calculations reveal that an electronic effect between Ru and Ni-NiO@C,in conjunction with nickel/oxygen vacancies in the NiO species could synergistically optimize hydrogen binding energy(HBE)and hydroxide binding energy(OHBE).The HBE and OHBE optimizations thus created confer Ru/Ni-NiO@C with a mass activity over 7.75 times higher than commercial Pt/C.Our work may provide a constructive route to make a break-through in elevating the hydrogen electrocatalytic performance.
文献关键词：
中图分类号：
作者姓名：
Yuting Yang;Yi Huang;Shuqing Zhou;Yi Liu;Luyan Shi;Tayirjan Taylor Isimjan;Xiulin Yang
作者机构：
Guangxi Key Laboratory of Low Carbon Energy Materials,School of Chemistry and Pharmaceutical Sciences,Guangxi Normal University,Guilin 541004,Guangxi,China;Saudi Arabia Basic Industries Corporation(SABIC)at King Abdullah University of Science and Technology(KAUST),Thuwal 23955-6900,Saudi Arabia
文献出处：
引用格式：
[1]Yuting Yang;Yi Huang;Shuqing Zhou;Yi Liu;Luyan Shi;Tayirjan Taylor Isimjan;Xiulin Yang-.Delicate surface vacancies engineering of Ru doped MOF-derived Ni-NiO@C hollow microsphere superstructure to achieve outstanding hydrogen oxidation performance)[J].能源化学,2022(09):395-404
A类：
Delicate,OHBE
B类：
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AB值：
0.639036
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