典型文献
Accelerated kinetics of alkaline hydrogen evolution/oxidation reactions on dispersed ruthenium sites through N and S dual coordination
文献摘要：
Efficient,robust and cost-effective electrocatalysts that catalyze hydrogen evolution/oxidation reaction(HER/HOR)in alkaline media are highly demanded.Recently,single-atom catalysts(SACs)have emerged as new promising candidates;however,the rational design of supports and the optimization of coordination environment between supports and metal atoms are challenging.In this work,we successfully fabricate atomically dispersed ruthenium(Ru)species,which are strongly coordinated by N and S dual heteroatoms on holey graphene(RuSA/NSG),as an excellent bifunctional catalyst for HER/HOR.In alkaline media,the developed catalyst exhibits high catalytic performance with a low overpotential of 57.3 mV to drive a current density of 10 mA cm-1 for HER,and its mass activity is about 5.8 times higher than that of commercial Pt/C and Ru/C catalysts at an overpotential of 100 mV.Similarly,considerable HOR performance of RuSA/NSG is verified to be superior to Pt/C and Ru/C.Furthermore,X-ray-based spectroscopy measurements and density-functional theory calculations have confirmed that,com-pared with Ru-N4,the tailored Ru-N4-S2 with nearby S dopants can act as more active centers to greatly accelerate the sluggish HER/HOR kinetics in alkaline media.The present work provides a new atomic-level engineering strategy to modulate catalytic activities of SACs via the coordination design using dual heteroatoms on the carbon support.
文献关键词：
中图分类号：
作者姓名：
Zhen Zhang;Liwen Ni;Haijun Liu;Zhi-Liang Zhao;Xiao-Zi Yuan;Hui Li
作者机构：
School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China;Department of Materials Science and Engineering,Shenzhen Key Laboratory of Hydrogen Energy,Southern University of Science and Technology,Shenzhen 518055,China;Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen 518055,China;Research Center of Energy,Mining and Environment,National Research Council Canada,4250 Wesbrook Mall,Vancouver V6T1W5,Canada
文献出处：
引用格式：
[1]Zhen Zhang;Liwen Ni;Haijun Liu;Zhi-Liang Zhao;Xiao-Zi Yuan;Hui Li-.Accelerated kinetics of alkaline hydrogen evolution/oxidation reactions on dispersed ruthenium sites through N and S dual coordination)[J].中国科学:化学（英文版）,2022(03):611-618
A类：
RuSA
B类：
Accelerated,kinetics,alkaline,hydrogen,evolution,oxidation,reactions,dispersed,ruthenium,sites,through,dual,coordination,Efficient,robust,cost,effective,electrocatalysts,that,catalyze,HER,HOR,media,highly,demanded,Recently,single,SACs,have,emerged,new,promising,candidates,however,rational,design,supports,optimization,environment,between,metal,challenging,In,this,work,successfully,fabricate,atomically,species,which,strongly,coordinated,heteroatoms,holey,graphene,NSG,excellent,bifunctional,developed,exhibits,catalytic,performance,low,overpotential,mV,drive,current,density,mA,mass,activity,about,times,higher,than,commercial,Pt,Similarly,considerable,verified,superior,Furthermore,ray,spectroscopy,measurements,theory,calculations,confirmed,pared,N4,tailored,S2,nearby,dopants,active,centers,greatly,accelerate,sluggish,present,provides,level,engineering,strategy,modulate,activities,via,using,carbon
AB值：
0.534834
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
