文献类型：期刊文献

英文题名：Ultrathin core-shell Au@RuNi nanowires for superior electrocatalytic hydrogen evolution

作者：Jiang, Xian[1,2] Wei, Xianzi[1] Chen, Mushun[1] Fu, Chuankai[1] Wang, Yufei[2] Wang, Caikang[1,4] Sun, Hao[3] Zhou, Juan[1,4] Tang, Yawen[2]

第一作者：Jiang, Xian

通信作者：Zhou, J[1];Tang, YW[2];Sun, H[3];Zhou, J[4]

机构：[1]Nanjing Univ Sci & Technol, Sch New Energy, Jiangyin 214443, Peoples R China;[2]Nanjing Normal Univ, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat, 16 Suojin 5th Village, Nanjing 210042, Peoples R China;[4]Nanjing Univ Sci & Technol, Sch Energy & Power Engn, 200 Xiaolingwei St, Nanjing 210094, Jiangsu Provinc, Peoples R China

年份：2024

外文期刊名：INORGANIC CHEMISTRY FRONTIERS

收录：;EI(收录号：20241916066183);Scopus(收录号：2-s2.0-85192468927);WOS:【SCI-EXPANDED(收录号:WOS:001214881200001)】；

基金：This paper was funded by the National Natural Science Foundation of China (22202104, 22279062, 22232004, 32101474, 42377249), Natural Science Foundation of Jiangsu Province (BK20220933), Jiangsu Undergraduate Training Program for Innovation and Entrepreneurship (S202210288055) and ShuangChuang Doctor Plan of Jiangsu Province (JSSCBS20220273). The authors are also grateful for the support from the National and Local Joint Engineering Research Center of Biomedical Functional Materials and a project sponsored by the Priority Academic Program Development of Jiangsu Higher Education Institutions.

语种：英文

外文关键词：Binary alloys - Catalyst activity - Cost effectiveness - Electrocatalysis - Electrocatalysts - Hydrogen - Shells (structures) - Slope stability

摘要：The rational design of cost-effective, highly efficient, and stable Ru-based electrocatalysts as substitutes for Pt in the hydrogen evolution reaction (HER) is highly desirable and has garnered significant attention. Constructing core-shell nanostructures has emerged as an effective approach for regulating the interaction among diverse components, potentially enhancing structural stability and catalytic activity. Herein, we report a facile synthesis of Au@RuNi NWs via the epitaxial growth of a uniform fcc-structured RuNi alloy layer on the surface of ultrathin Au NWs. The prepared Au@RuNi NWs exhibit a remarkable alkaline HER performance with only a 19 mV overpotential to achieve a current density of 10 mA cm-2, with a small Tafel slope of 32.63 mV dec-1 and outstanding stability. The ultrathin 1D core-shell nanowire structure and the alloying effect of Ni within the fcc-RuNi alloy shell layer facilitate the water dissociation, resulting in accelerated alkaline HER kinetics. This work provides a facile method to rationally design and synthesize core-shell Ru-based electrocatalysts for extraordinary HER performance under alkaline conditions. Ultrathin core-shell Au@RuNi nanowires have been synthesized via the epitaxial growth of uniform fcc-structured RuNi alloy layer on the surface of ultrathin Au NWs, demonstrating remarkable alkaline HER performance and outstanding stability.