Vertically oriented CoO@FeOOH nanowire arrays anchored on carbon cloth as a highly efficient electrode for oxygen evolution reaction

被引：46

作者：

Wang, Yin ^{[1
]}

Ni, Yuanman ^{[1
]}

Liu, Bing ^{[1
]}

Shang, Shuxia ^{[1
]}

Yang, Song ^{[1
]}

Cao, Minhua ^{[1
]}

Hu, Changwen ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Chem, Beijing Key Lab Photoelect Electrophoton Convers, Key Lab Cluster Sci,Minist Educ China, Beijing 100081, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2017年 / 257卷

基金：

中国国家自然科学基金;

关键词：

carbon cloth; CoO@FeOOH; nanowire arrays; electrodeposition; oxygen evolution reaction; LAYERED DOUBLE HYDROXIDES; LITHIUM-ION BATTERIES; HIGH-PERFORMANCE; HYDROGEN EVOLUTION; ENERGY-STORAGE; FIBER CLOTH; WATER OXIDATION; ELECTROCATALYSTS; NANOSHEETS; CATALYSTS;

D O I：

10.1016/j.electacta.2017.10.011

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Developing high efficiency electrocatalysts for electrocatalytic oxygen evolution reaction (OER) is a key to water splitting. In this work, we demonstrate the preparation of CoO@FeOOH core-shell nanowire (NWs) grown on three-dimensional (3D) carbon cloth (CC@CoO@FeOOH-NWAs) by hydrothermal method followed by electrodeposition process as well as its highly efficient activity for water oxidation. In this hybrid structure, CoO@FeOOH-NWs with an average diameter of 100 nm is vertically grown on the surface of carbon fibers of the carbon cloth. The combination of CoO@FeOOH catalyst with good electron transfer substrate exhibits exceptionally good electrocatalytic activity and long-term durability towards oxygen evolution reaction in alkaline solution. It needs an overpotential as low as 255 mV to achieve the current density of 10 mA cm(-2), with a Tafel slope of 82 mV dec(-1) and also exhibits a good stability in 20 h. In addition, the nanowire array structure is well retained after the durability test with high current density of 50 mA cm(-2). Our strategy provides a guide to rational design of micro-structures of the materials to achieve their high performance. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：356 / 363

页数：8

共 43 条

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