期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 313, 期 -, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2022.123287
关键词
Metal-Organic Frameworks (MOFs); Multi-components; Hydrogen evolution
资金
- Joint Fund Project of the Natural Science Foundation of Jilin Province [YDZJ202101ZYTS052]
- Foundation of Changchun University of Science and Technology [XQNJJ-2019-12, XJJLG-2019-03]
- Open Project Program of Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, China [2020013]
A new 2D structured Ni-MOF (CUST-516) was synthesized and physically post-decorated to obtain Ni/Ni3S2@CN electrocatalyst, which showed excellent HER activity and long-term stability. The synergistic effect of multi-components and the unique pore structure derived from precursor MOF contribute to the enhanced electrocatalytic performance.
MOF-derived materials are known as effective electrocatalysts for hydrogen evolution reaction (HER). Herein, a new 2D structured Ni-MOF (CUST-516) was synthesized, and physically post-decorated with glucose, urea and Ni(NO3)(2)center dot 6H(2)O simultaneously, used as precursors to obtain Ni/Ni3S2@CN electrocatalyst by high temperature calcination. Ni/Ni3S2@CN shows excellent HER activity with low overpotentials of 141 mV and 187 mV at 10 mA cm(-2) as well as long-term stability up to 24 h in 1.0 M KOH and 0.5 M H2SO4 solutions, respectively. The excellent electrocatalytic performance of Ni/Ni2S3@CN can be attributed to the synergistic effect of multi-components, the unique pore structure derived from precursor MOF, which enables the nanoparticles to be evenly distributed. Moreover, the post-decorated sources help to generate the doping of N elements and carbon layers, which increases the conductivity, prevents the aggregation of nanoparticles and corrosion, resulting in the enhanced complementary properties. This work provides a general post-decorated MOFs derivatization strategy to synthesize low-cost and efficient HER electrocatalysts.
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