典型文献
Activating multisite high-entropy alloy nanocrystals via enriching M-pyridinic N-C bonds for superior electrocatalytic hydrogen evolution
文献摘要：
The activation of multisite high-entropy alloy(HEA)electrocatalysts is helpful for improving the atomic utilization of each metal in water electrolysis catalysis.Herein,well-dispersed HEA nanocrystals on N-rich graphene with abundant M-pyridinic N-C bonds were synthesized through an ultrasonic-assisted confinement synthesis method.Operando Raman analysis and density functional theory calculations revealed that the electrocatalysts presented the optimal electronic rearrangement with fast rate-determined H2O dissociation kinetics and favorable H* adsorption behavior that greatly enhanced hydro-gen generation in alkaline electrolyte.A small overpotential of only 138.6 mV was required to obtain the current density of 100 mA cm-2 and the Tafel slope of as low as 33.0 mV dec-1,which was considerably smaller than the overpotentials of the counterpart with poor M-pyridinic N-C bonds(290.4 mV)and commercial Pt/C electrocatalysts(168.6 mV).The atomic structure,coordination environment,and elec-tronic structure were clarified.This work provides a new avenue toward activating HEA as advanced elec-trocatalysts and promotes the research on HEA for energy-related electrolysis.
文献关键词：
中图分类号：
作者姓名：
Jingyu Wang;Jiahao Zhang;Yanjie Hu;Hao Jiang;Chunzhong Li
作者机构：
Key Laboratory for Ultrafine Materials of Ministry of Education,Frontiers Science Center for Materiobiology and Dynamic Chemistry,School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China;Shanghai Engineering Research Center of Hierarchical Nanomaterials,School of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China
文献出处：
引用格式：
[1]Jingyu Wang;Jiahao Zhang;Yanjie Hu;Hao Jiang;Chunzhong Li-.Activating multisite high-entropy alloy nanocrystals via enriching M-pyridinic N-C bonds for superior electrocatalytic hydrogen evolution)[J].科学通报（英文版）,2022(18):1890-1897
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AB值：
0.642489
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