Co/C nanomaterial derived from Co metal-organic framework for oxygen evolution reaction

被引：20

作者：

Hu, Xiabing ^{[1
]}

Wang, Haoye ^{[1
]}

Qi, Songya ^{[1
]}

Su, Zilong ^{[1
]}

Wang, Jiajun ^{[1
]}

Chen, Kaixuan ^{[1
]}

Li, Shuji ^{[1
]}

Huang, Xuan ^{[1
]}

Luo, Shiping ^{[1
]}

Xie, Aijuan ^{[1
]}

机构：

[1] Changzhou Univ, Sch Petrochem Engn, Changzhou 213164, Jiangsu, Peoples R China

来源：

IONICS | 2022年 / 28卷 / 02期

关键词：

Metal-organic framework; Co-MOF; Co /C (700 degrees C); Oxygen evolution reaction; Derivative; HIGHLY EFFICIENT; ELECTROCATALYSTS; PHOSPHIDE; NI; POLYHEDRA; MOFS; OER;

D O I：

10.1007/s11581-021-04376-4

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：

The precursor of Co metal organic framework (MOF) was first synthesized by hydrothermal method; then, the optimal Co-MOF was pyrolyzed in a nitrogen atmosphere to obtain the derivative (Co/C). The as-prepared materials were finally applied to water splitting to investigate their oxygen evolution reaction (OER) performance. A series of electrochemical tests such as linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) show that Co/C (700 degrees C) exhibits lowest overpotential (420 mV) and charge transfer resistance (R-ct = 5.25 Omega), smallest Tafel slope (119 mV dec(-1)) as compared to other relevant materials. After the cyclic life test of 10,000 s, the current density of Co/C (700 degrees C) remained at 94.88%. In addition, the comparison of the OER performance between Co/C (700 degrees C) with other reported cobalt-based materials illustrates that Co/C (700 degrees C) has lower overpotential, and its Tafel slope is also comparable with these reported cobalt-based materials. Therefore, Co/C (700 degrees C) has broad application prospect in oxygen-evolution reaction.

引用

页码：813 / 821

页数：9

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