典型文献
Scalable synthesis of hcp ruthenium-molybdenum nanoalloy as a robust bifunctional electrocatalyst for hydrogen evolution/oxidation
文献摘要：
The hydrogen evolution reaction(HER)is the cathodic process of water splitting,and its reverse,the hydrogen oxidation reaction(HOR),is the anodic process of an H2-O2 fuel cell;both play important roles in the development of hydrogen energy.The rational design and scalable fabrication of low-cost and effi-cient bifunctional catalysts for the HER/HOR are highly desirable.Herein,ultrasmall Mo-Ru nanoalloy(Mo0.5Ru3 and MoRu3)particles uniformly distributed on mesoporous carbon(MPC)were successfully synthesized by a simple method that is easy to scale up for mass production.After the incorporation of Mo atoms,the as-prepared Mo0.5Ru3 and MoRu3 nanoalloys maintain a hexagonal-close-packed crystal structure.In acidic media,Mo0.5Ru3 exhibits excellent Pt-like HER and HOR activity,as well as good sta-bility.Density functional theory(DFT)calculations reveal that the H adsorption free energy(△GH*)on the Mo0.5Ru3(001)surface(-0.09 eV)is much closer to zero than that of metallic Ru(-0.22 eV),which con-tributes to the enhanced catalytic activity.In alkaline media,Mo0.5Ru3 also presents outstanding HER and HOR activity,even significantly outperforming Pt/C.The DFT results confirm that optimal binding ener-gies with H*and OH*intermediate species,and low energy barriers in the water dissociation and forma-tion steps,efficiently accelerate the alkaline HER/HOR kinetics of Mo0.5Ru3.This study provides a new avenue for the scalable fabrication of high-efficiency bifunctional electrocatalysts for the HER and HOR in both acidic and alkaline media.
文献关键词：
中图分类号：
作者姓名：
Zhen Zhang;Haijun Liu;Liwen Ni;Zhi-Liang Zhao;Hui Li
作者机构：
School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,Heilongjiang,China;Department of Materials Science and Engineering,Shenzhen Key Laboratory of Hydrogen Energy,Southern University of Science and Technology,Shenzhen 518055,Guangdong,China;Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen 518055,Guangdong,China
文献出处：
引用格式：
[1]Zhen Zhang;Haijun Liu;Liwen Ni;Zhi-Liang Zhao;Hui Li-.Scalable synthesis of hcp ruthenium-molybdenum nanoalloy as a robust bifunctional electrocatalyst for hydrogen evolution/oxidation)[J].能源化学,2022(09):176-185
A类：
nanoalloy,5Ru3,MoRu3,nanoalloys
B类：
Scalable,synthesis,hcp,ruthenium,molybdenum,robust,bifunctional,hydrogen,evolution,oxidation,reaction,HER,cathodic,process,water,splitting,reverse,HOR,anodic,H2,O2,fuel,both,play,important,roles,development,energy,rational,design,scalable,fabrication,low,cost,highly,desirable,Herein,ultrasmall,Mo0,particles,uniformly,distributed,mesoporous,carbon,MPC,were,successfully,synthesized,by,simple,method,that,easy,scale,up,mass,production,After,incorporation,atoms,prepared,maintain,hexagonal,packed,crystal,structure,In,acidic,exhibits,excellent,Pt,like,activity,well,good,bility,Density,theory,DFT,calculations,reveal,adsorption,free,GH,surface,eV,much,closer,zero,than,metallic,which,tributes,enhanced,catalytic,alkaline,also,presents,outstanding,even,significantly,outperforming,results,confirm,optimal,binding,gies,intermediate,species,barriers,dissociation,forma,steps,efficiently,accelerate,kinetics,This,study,provides,new,avenue,efficiency,electrocatalysts
AB值：
0.506348
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