Volume 3, Issue 6 p. 906-912
Article

CoMn Layered Double Hydroxides/Carbon Nanotubes Architectures as High-Performance Electrocatalysts for the Oxygen Evolution Reaction

Zhibin Liu

Zhibin Liu

State Key Lab of Fine Chemicals, Liaoning Key Lab for Energy Materials and Chemical Engineering, PSU-DUT Joint Center for Energy Research, Dalian University of Technology, Dalian, 116024 P. R. China

These authors contributed equally to this work

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Prof. Chang Yu

Prof. Chang Yu

State Key Lab of Fine Chemicals, Liaoning Key Lab for Energy Materials and Chemical Engineering, PSU-DUT Joint Center for Energy Research, Dalian University of Technology, Dalian, 116024 P. R. China

These authors contributed equally to this work

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Xiaotong Han

Xiaotong Han

State Key Lab of Fine Chemicals, Liaoning Key Lab for Energy Materials and Chemical Engineering, PSU-DUT Joint Center for Energy Research, Dalian University of Technology, Dalian, 116024 P. R. China

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Juan Yang

Juan Yang

State Key Lab of Fine Chemicals, Liaoning Key Lab for Energy Materials and Chemical Engineering, PSU-DUT Joint Center for Energy Research, Dalian University of Technology, Dalian, 116024 P. R. China

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Changtai Zhao

Changtai Zhao

State Key Lab of Fine Chemicals, Liaoning Key Lab for Energy Materials and Chemical Engineering, PSU-DUT Joint Center for Energy Research, Dalian University of Technology, Dalian, 116024 P. R. China

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Huawei Huang

Huawei Huang

State Key Lab of Fine Chemicals, Liaoning Key Lab for Energy Materials and Chemical Engineering, PSU-DUT Joint Center for Energy Research, Dalian University of Technology, Dalian, 116024 P. R. China

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Prof. Jieshan Qiu

Corresponding Author

Prof. Jieshan Qiu

State Key Lab of Fine Chemicals, Liaoning Key Lab for Energy Materials and Chemical Engineering, PSU-DUT Joint Center for Energy Research, Dalian University of Technology, Dalian, 116024 P. R. China

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First published: 30 March 2016
Citations: 77

Graphical Abstract

Express delivery: An integrated system composed of high-quality CoMn layered double hydroxide nanoplates anchored on carbon nanotube frameworks (denoted as CoMn-LDH/CNT nanohybrids) is reported, towards its electrochemical behavior for the oxygen evolution reaction (OER). The as-made CoMn-LDH/CNT nanohybrids deliver an excellent OER activity with a small overpotential (lower than that of CoMn-LDH nanoplates, precious RuO2 and CNT catalysts) and long-term stability.

Abstract

High-efficiency, earth-abundant oxygen evolution reaction (OER) catalysts are highly desired and required for the half reaction of water splitting. Herein, an integrated system composed of CoMn layered double hydroxides (CoMn-LDH) and carbon nanotubes (CNTs) were configured for the OER. Ultrathin CoMn-LDH nanoplates can grow and assemble in situ on conducting CNT frameworks to form the CoMn-LDH/CNT nanoarchitectures. The CNT frameworks provide conducting channels for fast charge transfer, whereas CoMn-LDH features highly active sites and is capable of catalyzing the OER process. Benefiting from functional integration of the highly active CoMn-LDH nanoplates and the strong coupling effects between ultrathin nanoplates and conducting CNT frameworks, the as-made CoMn-LDH/CNT nanohybrids achieve excellent OER performance with a small overpotential (355 mV at 10 mA cm−2), low Tafel slope (45 mV dec−1), and prominent electrochemical durability.