Enhanced hydrogen evolution from the face-sharing [RuO6] octahedral motif
作者： Fan Zhang , Shaoyun Hao , Guokui Zheng , Lecheng Lei , Xingwang Zhang
DOI: 10.1016/J.JECHEM.2020.08.015
关键词: Reaction energy 、 Metallic bonding 、 Adsorption 、 Hydrogen evolution 、 Overpotential 、 Electrocatalyst 、 Octahedron 、 Oxide 、 Crystallography 、 Materials science
摘要: Abstract Hampered by the ambiguous mechanism of hydrogen evolution reaction (HER) in basic media, exploration highly efficient catalytically active sites for alkaline HER is significance. Herein, a metal oxide Sr4Ru2O9 engineering face-sharing [RuO6] octahedra motif was synthesized through solid-state method, and served as electrocatalyst. Benefited from Ru-Ru metallic bonding crossing common plane, H* adsorption energy barriers were optimized. only required an ultra-small overpotential (ƞ10) 28 mV at current density 10 mA cm−2 1.0 M KOH with exceptional stability (180 hours), outperforming commercial Pt/C (ƞ10 = 38 mV). These findings suggest fresh insight designing novel electrocatalysis.
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