Epitaxial growth triggered core-shell Pd@RuP nanorods for high-efficiency electrocatalytic hydrogen evolution  

作　　者：Jiaqian Ding Xian Jiang Caikang Wang Zhuoya Zhu Chang Xu Yi Zhou Xuan Wang Qicheng Liu Zhenyuan Liu Yawen Tang Jun Lin Gengtao Fu 

机构地区：[1]Jiangsu Key Laboratory of New Power Batteries,Jiangsu Collaborative Innovation Center of Biomedical Functional Materials,School of Chemistry and Materials Science,Nanjing Normal University,Nanjing 210023,Jiangsu,China [2]School of New Energy,Nanjing University of Science and Technology,Jiangyin 214443,Jiangsu,China [3]School of Materials Science and Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,Jiangsu,China

出　　处：《Journal of Energy Chemistry》2023年第11期510-517,I0011,共9页能源化学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(22232004,22279062 and 22202104);the Natural Science Foundation of Jiangsu Province(BK20220933);the Shuangchuang Doctor Plan of Jiangsu Province,Jiangsu Specially Appointed Professor Plan;the supports from the National and Local Joint Engineering Research Center of Biomedical Functional Materials;a project sponsored by the Priority Academic Program Development of Jiangsu Higher Education Institutions。

摘　　要：Ru with Pt-like hydrogen bond strength,knockdown cost(~1/3 of Pt),and eximious stability is a competitive replacement for Pt-based catalysts towards the hydrogen evolution reaction(HER)in water splitting.The design of Ru-based catalysts via interface construction,crystal phase control,and specific light element doping to realize the impressive promotion of limited activity and stability remains challenging.Herein,we report the fabrication of Pd@RuP core-shell nanorods(NRs)via an epitaxial growth method,where ultrathin RuP shells extend the face-centered cubic(fcc)crystal structure and(111)plane of the Pd NRs core.Density functio nal theory results confirm that the core-s hell interface engineering and P doping synergistically accelerate electron transfer and moderate the d-band center to generate a suitable affinity for H*,thus optimizing HER kinetics.Compared with Pd@Ru NRs and Pt/C,the Pd@RuP NRs exhibit preferable electrocatalytic stability and superior activity with a low overpotential of 18 mV at 10 mA cm-2in the alkaline HER process.Furthermore,the integrated Pd@RuP//RuO2-based electrolyzer also displays a low operation potential of 1.42 V to acquire 10 mA cm-2,demonstrating great potential for practical water electrolysis.Our work presents an efficient avenue to design Ru-based electrocatalysts via epitaxial growth for extraordinary HER performance.

关 键 词：Pd@RuP Epitaxial growth Interface engineering Hydrogen evolution ELECTROCATALYST 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TQ116.2[化学工程—无机化工]