An organic ligand promoting the electrocatalytic activity of cobalt oxide for the hydrogen evolution reaction

被引：10

作者：

Chen, Chien-Hong ^{[1
]}

Chiou, Tzung-Wen ^{[2
]}

Chang, Han-Chun ^{[1
]}

Li, Wei-Liang ^{[2
]}

Tung, Chi-Yen ^{[2
]}

Liaw, Wen-Feng ^{[2
]}

机构：

[1] Chung Shan Med Univ, Chung Shan Med Univ Hosp, Dept Med Appl Chem, Dept Med Educ, Taichung 40201, Taiwan

[2] Natl Tsing Hua Univ, Dept Chem, Hsinchu 30013, Taiwan

来源：

SUSTAINABLE ENERGY & FUELS | 2019年 / 3卷 / 09期

关键词：

GENERATING HYDROGEN; OXYGEN EVOLUTION; WATER; EFFICIENT; CATALYST; CARBON; NANOSHEETS; COMPLEX; ARRAYS; DISSOCIATION;

D O I：

10.1039/c9se00371a

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：

In electrocatalytic water splitting, active, stable and low-cost hydrogen evolution electrocatalysts play key roles in the conversion and storage of renewable energy sources. Here we report that the incorporation of an organic ligand (2,2 '-dipyridylamine (Hdpa)) into Co3O4 dramatically enhanced its electrocatalytic activity for the hydrogen evolution reaction. The co-electrodeposited Co3O4-dpa-C nanosheets on a glassy carbon electrode exhibited a low overpotential of 54 mV to achieve a current density of 10 mA cm(-2) for the HER, much lower than that of pure Co3O4 (324 mV at 10 mA cm(-2)). These results indicate that the molecular Co complex anchored on the surface of Co3O4 acts as the catalytic center and cooperatively promotes the hydrogen evolution reaction at the interface of the Co3O4 support under alkaline conditions.

引用

页码：2205 / 2210

页数：6

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