Hybrid Co3O4@Co9S8 Electrocatalysts for Oxygen Evolution Reaction

Yong-Li Tong; Yong-Li Tong; Lei Xing; Mei-Zhen Dai; Xiang Wu

doi:10.3389/fmats.2019.00233

Frontiers in Materials (Oct 2019)

Hybrid Co3O4@Co9S8 Electrocatalysts for Oxygen Evolution Reaction

Yong-Li Tong,
Yong-Li Tong,
Lei Xing,
Mei-Zhen Dai,
Xiang Wu

Affiliations

Yong-Li Tong: School of Materials Science and Engineering, Shenyang University of Technology, Shenyang, China
Yong-Li Tong: School of Science, Shenyang Ligong University, Shenyang, China
Lei Xing: School of Materials Science and Engineering, Shenyang University of Technology, Shenyang, China
Mei-Zhen Dai: School of Materials Science and Engineering, Shenyang University of Technology, Shenyang, China
Xiang Wu: School of Materials Science and Engineering, Shenyang University of Technology, Shenyang, China

DOI: https://doi.org/10.3389/fmats.2019.00233
Journal volume & issue: Vol. 6

Abstract

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It is very essential to design an efficient and low-cost electrocatalyst for oxygen evolution reaction (OER). In this work, we report synthesis of Co3O4@Co9S8 heterostructures (Co-HSs) by employing Co3O4 nanowires (Co-NWs) as the precursor on nickel foam though a facile hydrothermal method. The unique structures can combine the advantages of one-dimensional nanowires and two-dimensional nanosheets, simultaneously, which possess plentiful defect atoms and active sites. The as-prepared Co-HSs exhibit excellent electrocatalytic performance for OER, which present a low overpotential of 80 mV at 10 mA cm−2 during OER process and small Tafel slope of 107.2 mV dec−1.

Published in Frontiers in Materials

ISSN: 2296-8016 (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Technology
Website: https://www.frontiersin.org/journals/materials

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