Defined organic-octamolybdate crystalline superstructures derived Mo_(2)C@C as efficient hydrogen evolution electrocatalysts

作     者：Jiao Li Chenyang Zhang Chuhan Wu Yan Liu Xuejian Zhang Xiao Li Yongtao Li Jing Sun Zhongmin Su Jiao Li;Chenyang Zhang;Chuhan Wu;Yan Liu;Xuejian Zhang;Xiao Li;Yongtao Li;Jing Sun;Zhongmin Su

作者机构：School of Materials Science and EngineeringJilin Jianzhu UniversityChangchun 130018China School of Chemical and Environmental EngineeringChangchun University of Science and TechnologyChangchun 130022China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2024年第35卷第6期

页      面：201-205页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by Joint Fund Project of the Natural Science Foundation of Jilin Province(No.YDZJ202301ZYTS290) 

主　　题：Molybdenum carbides Electrocatalysts Organic-octamolybdate crystalline superstructures Synergistic interactions Hydrogen evolution reaction(HER) 

摘      要：Hydrogen evolution electrocatalysts derived from metal-organic crystalline frameworks can inherit the merits of ordered and adjustable structures with high surface *** this paper,organic-octamolybdate crystalline superstructures(OOCS)with a fixed stoichiometric ratio of Mo_(8)(L)_(2) and high Mo content(40 wt%)were synthesized using flexible ligands with controllable lengths(named as OOCS-1-3).Then,molybdenum carbides coated with carbon layers as electrocatalysts(Mo_(2)C@C-1-3)can be obtained directly from a one-step high-temperature carbonization process using OOCS-1-3 as *** a typical example,Mo_(2)C@C-3 exhibits satisfactory hydrogen evolution activity with a low overpotential of 151 m V(1.0 mol/L KOH)at 10 m A/cm^(2) and stability for 24 *** electrocatalytic activity is mainly from the synergistic interactions between the carbon layers and molybdenum carbide ***,compared with the initial content of C,N,Mo in OOCS and Mo_(2)C@C,the catalytic activity increases with the N *** work makes organic-octamolybdate crystalline superstructures used as general precursors to product high Mo content electrocatalysts applied in energy storage and conversion fields.