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

• 作者: Fan Zhang Shaoyun Hao Guokui Zheng Lecheng Lei Xingwang Zhang
• 来源期刊: 能源化学
• 年，卷（期）: 2021,（5）
• 页码范围: 276-282
• 页数: 7页
• 语种: 英文

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 SraRu2O9 engineering a face-sharing[RuO6]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.Sr4Ru2O9 only required an ultra-small overpotential (η10) of 28 mV 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.