Co3O4 composite imine-type COFs-derived nitrogen-doped carbon materials as efficient hydrogen electrocatalysts

被引：0

作者：

Liang, Tong ^{[1
]}

Li, Zhengfeng ^{[1
]}

Song, Yunqi ^{[1
]}

Xie, Kemin ^{[1
]}

Wang, Hairui ^{[1
]}

Yao, Yao ^{[1
]}

机构：

[1] Key Laboratory of Green Catalytic Materials and Technology of Ningxia Hui Autonomous Region, School of Chemistry and Chemical Engineering, Ningxia Normal University, Guyuan,756000, China

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2024年 / 41卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Carbon carbon composites - Catalytic cracking - Gas permeable membranes - Hydrogen evolution reaction - Hydrogen storage - Membrane technology - Syngas production;

D O I：

10.13801/j.cnki.fhclxb.20240412.003

中图分类号：

学科分类号：

摘要：

Imine-type covalent organic frameworks (COFs) materials are mostly used in membrane separation technology, gas storage and separation, etc., while they are seldom used in electrocatalytic hydrogen precipitation due to their poor electrical conductivity and low physicochemical stability. In order to obtain highly stable and active electrocatalysts, a simpler solvothermal method was used to synthesize imine-type COFs (TAPA-TFB-COF), and then Co3O4 composite N-doped carbon materials with 3D microsphere structure were obtained by high-temperature pyrolysis using Co(OAC)2·4H2O as the Co source (Co3O4/NC). It is shown that due to the 3D microsphere structure, high temperature pyrolysis promoting graphitization of the material, and the synergistic effect of Co and heteroatom N, Co3O4/NC exhibits excellent electrocatalytic hydrogen precipitation activity, with the onset potential decreasing from −0.92 V (vs. RHE) to −0.27 V (vs. RHE), and the current density increasing to 14 times of that of TAPA-TFB-COF, and the Tafel slope being only 151 mV·dec−1 and electrochemical reaction charge transfer resistance (Rct) as small as 80.8 Ω. © 2024 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.

引用

页码：6559 / 6568