Enhanced hydrogen evolution from the face-sharing[RuO6]octahedral motif  

作　　者：Fan Zhang Shaoyun Hao Guokui Zheng Lecheng Lei Xingwang Zhang 

机构地区：[1]Key Laboratory of Biomass Chemical Engineering of Ministry of Education,Department of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,Zhejiang,China [2]Institute of Zhejiang University-Quzhou,Quzhou 324000,Zhejiang,China

出　　处：《Journal of Energy Chemistry》2021年第5期276-282,共7页能源化学（英文版）

基　　金：supported by the Fundamental Research Funds for the Central Universities(2020XZZX002-07);supported by Natural Science Foundation of Zhejiang Province(No.LR17B060003);the National Natural Science Foundation of China(Project Nos.21776248 and 21676246)。

摘　　要：Hampered by the ambiguous mechanism of hydrogen evolution reaction(HER)in basic media,the exploration of highly efficient catalytically active sites for alkaline HER is of significance.Herein,a metal oxide Sr_(4)Ru_(2)O_(9)engineering a face-sharing[RuO_(6)]octahedra motif was synthesized through the solid-state method,and served as HER electrocatalyst.Benefited from the Ru-Ru metallic bonding crossing the common plane,the H*adsorption and reaction energy barriers were optimized.Sr_(4)Ru_(2)O_(9)only required an ultra-small overpotential(η10)of 28 m V at a current density of 10 mA cm^(-2) for HER in 1.0 M KOH with an exceptional stability(180 hours),outperforming the commercial Pt/C(η10=38 mV).These findings suggest a fresh insight in designing novel active sites for electrocatalysis.

关 键 词：Catalytically active site Face-sharing octahedra ELECTROCATALYSIS Hydrogen evolution reaction 

分 类 号：TQ116.2[化学工程—无机化工] TQ426