文献类型：期刊文献

英文题名：Manipulating the Rectifying Contact between Ultrafine Ru Nanoclusters and N-Doped Carbon Nanofibers for High-Efficiency pH-Universal Electrocatalytic Hydrogen Evolution

作者：Zhou, Guangyao[1] Zhang, Sike[2] Zhu, Yufeng[2] Li, Jing[1] Sun, Kang[3] Pang, Huan[4] Zhang, Mingyi[5] Tang, Yawen[2] Xu, Lin[2]

第一作者：Zhou, Guangyao

通信作者：Tang, YW[1];Xu, L[1];Sun, K[2]

机构：[1]Jinling Inst Technol, Coll Sci, Nanjing 211169, 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, Nanjing 210042, Peoples R China;[4]Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225009, Peoples R China;[5]Harbin Normal Univ, Sch Phys & Elect Engn, Key Lab Photon & Elect Bandgap Mat, Minist Educ, Harbin 150025, Peoples R China

年份：0

外文期刊名：SMALL

收录：;EI(收录号：20225113282297);Scopus(收录号：2-s2.0-85144261960);WOS:【SCI-EXPANDED(收录号:WOS:000898792600001)】；

基金：Acknowledgements This work was financially supported by National Natural Science Foundation of China (21972068 and 21875112) and High-level Talents Project of Jinling Institute of Technology (jit-b-202164).

语种：英文

外文关键词：hydrogen evolution reaction; rectifying contact; Ru nanoclusters; Schottky electrocatalysts; wide pH range

摘要：The rational design of ingenious strategies to boost the intrinsic activity and stability of ruthenium (Ru) is of great importance for the substantial progression of water electrolysis technology. Based on Mott-Schottky effect, electronic regulation within a metal/semiconductor hybrid electrocatalyst represents a versatile strategy to boost the electrochemical performance. Herein, a typical Mott-Schottky hydrogen evolution reaction (HER) electrocatalyst composed of uniform ultrafine Ru nanoclusters in situ anchored on N-doped carbon nanofibers (abbreviated as Ru@N-CNFs hereafter) through a feasible and scalable "phenolic resin-bridged" strategy is reported. Both spectroscopy analyses and density functional theory calculations manifest that such rectifying contact can induce the spontaneous electron transfer from Ru to N-doped carbon nanofibers to generate a built-in electric field, thus enormously promoting the charge transfer efficiency and HER intrinsic activity. Moreover, the seamless immobilization of Ru nanoclusters on the substrate can prevent the active sites from unfavorable migration, coarsening, and detachment, rendering the excellent structural stability. Consequently, the well-designed Ru@N-CNFs afford prominent pH-universal HER performances with small overpotentials of 16 and 17 mV at 10 mA cm(-2) and low Tafel slopes of 31.8 and 28.5 mV dec(-1) in acidic and alkaline electrolytes, respectively, which are superior to the state-of-the-art commercial Pt/C and Ru/C benchmarks.