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Structure Confined Porous Mo 2 C for Efficient Hydrogen Evolution
Author(s) -
Wan Jun,
Wu Jiabin,
Gao Xiang,
Li Tianqi,
Hu Zhimi,
Yu Huimin,
Huang Liang
Publication year - 2017
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201703933
Subject(s) - materials science , overpotential , tafel equation , electrocatalyst , porosity , chemical engineering , nanowire , nanostructure , imidazolate , cobalt , molybdenum , zeolitic imidazolate framework , nanotechnology , metallurgy , composite material , electrode , metal organic framework , chemistry , adsorption , electrochemistry , engineering
Molybdenum carbide (Mo 2 C) has been widely applied in energy conversion, electrocatalysis, and other electronic devices, but its nanostructure with certain morphology and porous structure is tough to control. In this work, 1D or 2D porous Mo 2 C nanostructures can be synthesized by carburizing cobalt‐based zeolitic imidazolate framework (ZIF‐67) cladding MoO 3 nanowires or nanosheets hybrid structure under high temperature. The obtained 2D porous Mo 2 C shows a low onset overpotential (η = 25 and 36 mV) and a small Tafel slope (40 and 47 mV dec −1 ) in 0.1 m HClO 4 and 0.1 m KOH as well as great stability. This work highlights a new strategy for the design and synthesis of porous nanostructure Mo 2 C electrocatalysts.