电化学2022，Vol.28Issue(10)：79-89,11.DOI:10.13208/j.electrochem.2214011
无序Ru-O构型对电化学析氢催化性能研究
Catalytic Effect Of Disordered Ru-O Configurations for Electrochemical Hydrogen Evolution
摘要
Abstract
Phase engineering is considered as an effective method for modulating the electronic structure and catalytic activity of catalysts.The disordered conformation of amorphous materials allows flexible reforming of the surface electronic structure,showing their attractiveness as catalysts for hydrogen evolution reaction(HER).Herein,we designed and developed an amorphous ruthenium dioxide(a-RuO2)catalyst with a disordered Ru-O configuration.The conformational relationship between Ru-O ordering and HER performance is established by combining advanced electron microscopic techniques with detailed electrochemical tests.Specifically,the disordered Ru-O coordination significantly enhanced the HER catalytic activity in both acidic and alkaline media,ultimately leading to HER performance of a-RuO2 approaching that of commercial Pt/C with higher economics.In addition,a-RuO2 exhibited excellent stability after 10 h current-time(i-t)testing at 10 mA-cm-2.Further theoretical simulations showed that the low-ered d-band center and optimized electron transport of a-RuO2 modulated the adsorption strength of the active site to the intermedi-ate reactants,promoting HER kinetics.This work provides a new perspective for exploring highly active HER catalysts through phase engineering.关键词
相工程/电化学析氢/非晶催化剂/电子结构Key words
phase engineering/hydrogen evolution reaction/amorphous catalyst/electronic structure引用本文复制引用
孙雪,宋亚杰,李仁龙,王家钧..无序Ru-O构型对电化学析氢催化性能研究[J].电化学,2022,28(10):79-89,11.基金项目
This work was supported by National Natural Science Foundation of China(No.22075063,No.U1932205,No.22102041),Fundamental Research Funds for the Central Universities(FRFCU5710092520),Chinesisch-Deutschen Zentrum für Wissenschaftsf?rderung(M-0281),Natural Science Funds of Heilongjiang Pro-vince(No.ZD2019B001),Heilongjiang Touyan Team(HITTY-20190033),the Natural Science Fund for Distinguished Young Scholars of Chongqing(cstc-2021jcyj-jqX0003),"Young Scientist Studio"and Chongqing Research Institute of HIT. （No.22075063,No.U1932205,No.22102041）
