Microwave-Assisted Synthesis of Co/CoOx Supported on Earth-Abundant Coal-Derived Carbon for Electrocatalysis of Oxygen Evolution
Artikel i vetenskaplig tidskrift, 2019

The evident demand for hydrogen as the ultimate energy fuel for posterity calls for the development of low-cost, efficient and stable electrocatalysts for water splitting. Herein, we report the synthesis of Co/CoOx supported on coal-derived N-doped carbon via a simple microwave-assisted method and demonstrate its application as an efficient catalyst for the oxygen evolution reaction (OER). With the optimal amount of cobalt introduced into the N-doped coal-derived, the developed catalyst achieved overpotentials of 0.370 and 0.429 V during water oxidation at current densities of 1 mA cm(-2) and 10 mA cm(-2), respectively. There was no noticeable loss in the activity of the catalyst during continuous galvanostatic polarization at a current density of 10 mA cm(-2) for a test period of 66 h. The synergistic interaction of the Co/CoOx moieties with the pyridinic and pyrollic nitrogen functional groups in the N-doped carbon, as well with the other heteroatoms species in the pristine coal favored enhancement of the OER electrocatalytic performance. (C) The Author(s) 2019. Published by ECS.

Författare

Haoran Pan

University of Science and Technology Liaoning

Dongling Wu

Xinjiang Univ

Xinning Huang

University of Science and Technology Liaoning

Kunpeng Xie

Chalmers, Kemi och kemiteknik, Kemiteknik, Kemisk apparatteknik

Kompetenscentrum katalys (KCK)

Bingcai He

University of Science and Technology Liaoning

Zhenjie Lu

University of Science and Technology Liaoning

Penggao Liu

University of Science and Technology Liaoning

Junxia Cheng

University of Science and Technology Liaoning

Xuefei Zhao

University of Science and Technology Liaoning

Justus Masa

Ruhr-Universität Bochum

Xingxing Chen

University of Science and Technology Liaoning

Journal of the Electrochemical Society

0013-4651 (ISSN)

Vol. 166 8 F479-F486

Ämneskategorier

Kemiska processer

Materialkemi

Organisk kemi

DOI

10.1149/2.0281908jes

Mer information

Senast uppdaterat

2019-08-09