The hybrid Pt nanoclusters/Ru nanowires catalysts accelerating alkaline hydrogen evolution reaction  

作　　者：Jingjing Yan Rundong Wu Guoqiang Jin Litao Jia Gang Feng Xili Tong 

机构地区：[1]State Key Laboratory of Coal Conversion,Analytical Instrumentation Center,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Key Laboratory of Jiangxi Province for Environment and Energy Catalysis,Institute of Applied Chemistry,School of Chemistry and Chemical Engineering,Nanchang University,Nanchang 330031,China

出　　处：《Advanced Powder Materials》2024年第5期23-32,共10页先进粉体材料（英文）

基　　金：supported by the Shanxi Province Natural Science Foundation(20210302124446,202102070301018);the Basic Research Project from Institute of Coal Chemistry,CAS(SCJC-HN-2022-17);the Foundation of State Key Laboratory of Coal Conversion(Grant No.J23-24-909).

摘　　要：Water electrolysis via alkaline hydrogen evolution reaction(HER)is a promising approach for large-scale production of high-purity hydrogen at a low cost,utilizing renewable and clean energy.However,the sluggish kinetics derived from the high energy barrier of water dissociation impedes seriously its practical application.Herein,a series of hybrid Pt nanoclusters/Ru nanowires(Pt/Ru NWs)catalysts are demonstrated to accelerate alkaline HER.And the optimized Pt/Ru NWs(10%wt Pt)exhibits exceptional performance with an ultralow overpotential(24 mV at 10 mA cm^(-2)),a small Tafel slope(26.3 mV dec^(-1)),and long-term stability,outperforming the benchmark commercial Pt/C-JM-20%wt catalyst.This amazing performance also occurred in the alkaline anion-exchange membrane water electrolysis devices,where it delivered a cell voltage of about 1.9 V at 1 A cm^(-2)and an outstanding stability(more than 100 h).The calculations have revealed such a superior performance exhibited by Pt/Ru NWs stems from the formed heterointerfaces,which significantly reduce the energy barrier of the decisive rate step of water dissociation via cooperative-action between Pt cluster and Ru substance.This work provides valuable perspectives for designing advanced materials toward alkaline HER and beyond.

关 键 词：Cooperative-action Pt nanoclusters Ru nanowires Hydrogen evolution reaction HETEROINTERFACE 

分 类 号：O64[理学—物理化学]