Edge‐Riched MoSe 2 /MoO 2  Hybrid Electrocatalyst for Efficient Hydrogen Evolution Reaction | Zendy

Jian Chuanyong | Zendy; Cai Qian | Zendy; Hong Wenting | Zendy; Li Jing | Zendy; Liu Wei | Zendy

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Edge‐Riched MoSe 2 /MoO 2 Hybrid Electrocatalyst for Efficient Hydrogen Evolution Reaction

Author(s) -

Jian Chuanyong,

Cai Qian,

Hong Wenting,

Li Jing,

Liu Wei

Publication year - 2018

Publication title -

small

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.785

H-Index - 236

eISSN - 1613-6829

pISSN - 1613-6810

DOI - 10.1002/smll.201703798

Subject(s) - tafel equation , overpotential , electrocatalyst , materials science , conductivity , foil method , diselenide , catalysis , chemical engineering , exchange current density , water splitting , molybdenum , hydrogen , inorganic chemistry , nanotechnology , electrode , electrochemistry , chemistry , composite material , metallurgy , photocatalysis , organic chemistry , engineering , selenium

Molybdenum diselenide (MoSe 2 ) is widely considered as one of the most promising catalysts for the hydrogen evolution reaction (HER). However, the absence of active sites and poor conductivity of MoSe 2 severely restrict its HER performance. By introducing a layer of MoO 2 on Mo foil, MoSe 2 /MoO 2 hybrid nanosheets with an abundant edge and high electrical conductivity can be synthesized on the surface of Mo foil. Metallic MoO 2 can improve the charge transport efficiency of MoSe 2 /MoO 2 , thereby enhancing the overall HER performance. MoSe 2 /MoO 2 exhibits fast hydrogen evolution kinetics with a small overpotential of 142 mV versus RHE at a current density of 10 mA cm −2 and Tafel slope of 48.9 mV dec −1 .

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