A MOF-derived coral-like NiSe@NC nanohybrid: an efficient electrocatalyst for the hydrogen evolution reaction at all pH values

作者：Huang, Zhaodi; Liu, Jianhua; Xiao, Zhenyu; Fu, Hui; Fan, Weidong; Xu, Ben; Dong, Bin; Liu, Di; Dai, Fangna^*; Sun, Daofeng^*

来源：Nanoscale, 2018, 10(48): 22758-22765.

DOI：10.1039/c8nr06877a

• HIGH-PERFORMANCE ELECTROCATALYSTS
• DOPED CARBON
• OXYGEN REDUCTION
• NANOWIRE FILM
• NICKEL FOAM
• ELECTRODE
• METAL
• ARRAY
• MICROSPHERES
• NANOSHEETS

A coral-like NiSe@NC nanohybrid as an effective electrocatalyst for the hydrogen evolution reaction (HER) at all pH values, constructed via the in situ selenation of a Ni-MOFs precursor, is reported. The electrocatalyst shows overpotentials of 123 mV, 250 mV and 300 mV in 0.5 M H2SO4, 1.0 M KOH and 1.0 M PBS, respectively, to afford a current density of 10 mA cm(-2). Meanwhile, NiSe@NC also exhibits a small Tafel slope and superior long-term stability over a wide pH range. The excellent electrocatalytic performance should be ascribed to the unique coral-like structure with a large BET specific surface area (125.4 m(2) g(-1)) and mesoporous features, as well as synergistic effects between NiSe nanocrystals and highly conductive N-doped porous carbon.

• 出版日期2018-12-28
• 单位山东科技大学; 中国石油大学（华东）