Water Oxidation Catalysis Beginning with CuCo2S4: Investigation of the True Electrochemically Driven Catalyst

被引：30

作者：

Du, Xiaoqiang ^{[1
]}

Zhang, Xiaoshuang ^{[1
]}

Yang, Zhi ^{[1
]}

Gong, Yaqiong ^{[1
]}

机构：

[1] North Univ China, Sch Chem Engn & Technol, Taiyuan 030051, Shanxi, Peoples R China

来源：

CHEMISTRY-AN ASIAN JOURNAL | 2018年 / 13卷 / 03期

关键词：

electrochemistry; nanostructures; sulfur; transition metals; water splitting; OXYGEN EVOLUTION REACTION; NICKEL FOAM; EFFICIENT ELECTROCATALYST; ABUNDANT METALS; NANOSHEETS; ELECTRODE; HETEROSTRUCTURES; POLYOXOMETALATE; MICROSPHERES; REDUCTION;

D O I：

10.1002/asia.201701684

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The exploitation of efficient and stable water oxidation catalysts is a pressing challenge to solve the energy crisis. Herein, flower-like CuCo2S4 microspheres were successfully synthesized and used as an effective water oxidation catalyst. CuCo2S4/NF (NF=nickel foam) affords electrocatalytic water oxidation activity, with a current density of 20mAcm(-2) at a low overpotential of 260mV. The overpotential value is lower than that of benchmark RuO2/NF (overpotential of 340mV at a current density of 20mAcm(-2)). The water oxidation activity increases linearly before nonlinearly improving with increasing pH; this indicates that the substrate changes from water to hydroxyl. The CuCo2S4/NF catalyst is demonstrated to be a real water oxidation catalyst based on diverse experiments.

引用

页码：266 / 270

页数：5

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