A Sustainable Route to Ruthenium Phosphide (RuP)/Ru Heterostructures with Electron-Shuttling of Interfacial Ru for Efficient Hydrogen Evolution.

Li, Daohao; Cai, Rongsheng; Zheng, Dongyong; Ren, Jun; Dong, Chung-Li; Huang, Yu-Cheng; Haigh, Sarah J; Liu, Xien; Gong, Feilong; Liu, Yiming; Liu, Jian; Yang, Dongjiang

Li, Daohao; Cai, Rongsheng; Zheng, Dongyong; Ren, Jun; Dong, Chung-Li; Huang, Yu-Cheng; Haigh, Sarah J; Liu, Xien; Gong, Feilong; Liu, Yiming; Liu, Jian; Yang, Dongjiang.

Afiliación

Li D; State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, School of Environmental Science and Engineering, Institute of Marine Biobased Materials, Qingdao University, Qingdao, 266071, P. R. China.
Cai R; Department of Materials, University of Manchester, Manchester, M13 9PL, UK.
Zheng D; State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, School of Environmental Science and Engineering, Institute of Marine Biobased Materials, Qingdao University, Qingdao, 266071, P. R. China.
Ren J; School of Chemical and Environmental Engineering, North University of China, Taiyuan, 030051, P. R. China.
Dong CL; Department of Physics, Tamkang University, New Taipei City, 25137, Taiwan.
Huang YC; Department of Physics, Tamkang University, New Taipei City, 25137, Taiwan.
Haigh SJ; Department of Materials, University of Manchester, Manchester, M13 9PL, UK.
Liu X; State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China.
Gong F; Key Laboratory of Surface and Interface Science and Technology of Henan Province, College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan, 450001, P. R. China.
Liu Y; College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, P. R. China.
Liu J; Science Center of Energy Material and Chemistry, College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, P. R. China.
Yang D; DICP-Surrey Joint Centre for Future Materials, University of Surrey, Guildford, Surrey, GU2 7XH, UK.

Adv Sci (Weinh) ; 11(22): e2309869, 2024 Jun.

Article en En | MEDLINE | ID: mdl-38544479

ABSTRACT

ABSTRACT

Ruthenium (Ru) is a promising electrocatalyst for the hydrogen evolution reaction (HER), despite suffering from low activity in non-acidic conditions due to the high kinetic energy barrier of H2O dissociation. Herein, the synthesis of carbon nanosheet-supported RuP/Ru heterostructures (RuP/Ru@CNS) from a natural polysaccharide is reported and demonstrates its behavior as an effective HER electrocatalyst in non-acidic conditions. The RuP/Ru@CNS exhibits low overpotential (106 mV at 200 mA·cm-2) in alkaline electrolyte, exceeding most reported Ru-based electrocatalysts. The electron shuttling between Ru atoms at the RuP/Ru interface results in a lowered energy barrier for H2O dissociation by electron-deficient Ru atoms in the pure Ru phase, as well as optimized H* adsorption of electron-gaining Ru atoms in the neighboring RuP. A low H* spillover energy barrier between Ru atoms at the RuP/Ru interface further boosts HER kinetics. This study demonstrates a sustainable method for the fabrication of efficient Ru-based electrocatalysts and provides a more detailed understanding of interface effects in HER catalysis.

Palabras clave

Rubased electrocatalyst; electronshuttling; heterostructures; hydrogen evolution; interface

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