1T/2H MoS2 nanoflowers decorated amorphous Mo-CoSx skeleton: A ZIF-based composite electrocatalyst for the hydrogen evolution reaction

被引:31
作者
Gao, Chencheng [1 ,2 ]
Hua, Hongfeng [1 ,2 ]
Du, Ming [1 ,2 ]
Liu, Jinsong [3 ]
Wu, Xiaoyu [3 ]
Pu, Yong [3 ]
Li, Xing'ao [1 ,2 ,3 ]
机构
[1] Nanjing Univ Posts & Telecommun, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, Key Lab Organ Elect & Informat Displays, Nanjing 210023, Peoples R China
[2] Nanjing Univ Posts & Telecommun, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, Inst Adv Mat, Nanjing 210023, Peoples R China
[3] Nanjing Univ Posts & Telecommun, Sch Sci, New Energy Technol Engn Lab Jiangsu Prov, Nanjing 210023, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
MoS2; ZIF; CoSx; Electrocatalytic; HER; REDUCED GRAPHENE OXIDE; ENHANCED PHOTOCATALYTIC PERFORMANCE; NANOSHEETS; CATALYST; ARCHITECTURES; CONSTRUCTION; FABRICATION; NICKEL;
D O I
10.1016/j.apsusc.2020.145842
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Electronic regulation through component precise control at the atomic level of electrocatalysts has a fundamental influence on the efficiency of hydrogen evolution reaction (HER). Herein, we successfully demonstrate a ZIF-based charge transfer medium for improving the electrocatalytic activity of MoS2 towards HER. Benefit for the enough porous structure, superior electron conductivity as well as the synergistic effect from the doped atoms, the hybrids phase (1T/2H) MoS2 nanoflowers decorated amorphous Mo-CoSx skeleton exhibited the promotional electrocatalytic performance in efficiency and stability. Specifically, an extremely low overpotential of 73 mV at the current density of -10 mA cm(-2) and an impressive Tafel slope of 39.2 mV dec(-1) had been achieved from the nanocomposites in an acidic condition (0.5 M H2SO4). The satisfactory activity improvement can be ascribed to the enhancement of electronic transmission rate as well as the synergistic effects between the doped Mo element and CoSx. This work might develop a new avenue to design highly efficient multicomponent electrocatalysts towards HER.
引用
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页数:8
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