Improving oxygen evolution activity of CoSx by two different Fe-adding method: Comparison of ion exchange and sputtering

Ran Chang; Tao Li; Junhao Wu; Xiong He; Yubo Mao; Zhenghui Zhang; Kui Li; Haiquan Xie

Catalysis Communications (Apr 2023)

Improving oxygen evolution activity of CoSx by two different Fe-adding method: Comparison of ion exchange and sputtering

Ran Chang,
Tao Li,
Junhao Wu,
Xiong He,
Yubo Mao,
Zhenghui Zhang,
Kui Li,
Haiquan Xie

Affiliations

Ran Chang: Engneering Technology Research Center of Henan Province for Solar Catalysis, School of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, Henan, China
Tao Li: Engneering Technology Research Center of Henan Province for Solar Catalysis, School of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, Henan, China; Corresponding authors.
Junhao Wu: Engneering Technology Research Center of Henan Province for Solar Catalysis, School of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, Henan, China; School of Materials Science and Engineering, University of Jinan, Jinan 250022, China
Xiong He: Engneering Technology Research Center of Henan Province for Solar Catalysis, School of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, Henan, China; School of Materials Science and Engineering, University of Jinan, Jinan 250022, China
Yubo Mao: Engneering Technology Research Center of Henan Province for Solar Catalysis, School of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, Henan, China
Zhenghui Zhang: Engneering Technology Research Center of Henan Province for Solar Catalysis, School of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, Henan, China
Kui Li: School of Materials Science and Engineering, University of Jinan, Jinan 250022, China
Haiquan Xie: Engneering Technology Research Center of Henan Province for Solar Catalysis, School of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, Henan, China; Corresponding authors.

Journal volume & issue: Vol. 177
p. 106659

Abstract

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Adding Fe to Co/Ni-based electrocatalysis can effectively improve the OER activity. However, the adding method of Fe may greatly influence the enhancing efficiency. In this paper, iron is introduced to cobalt sulfide by ion exchange and magnetron sputtering, respectively. Compared with magnetron sputtering, the ion-exchanged electrocatalyst possesses more satisfactory OER activity after the electrochemical activation. The surface reconstruction of the Fe-added electrocatalysts during electrochemical activation were verified by the structural and electrochemical characterizations. It is thought that Fe-adding method can affect the process of electrochemical surface reconstruction, and then influence the formation of the OER-active species.

Published in Catalysis Communications

ISSN: 1566-7367 (Print); 1873-3905 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry
Website: https://www.journals.elsevier.com/catalysis-communications

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