Improved Electrochemical Alkaline Seawater Oxidation over Cobalt Carbonate Hydroxide Nanowire Array by Iron Doping

Shaorui Shi; Shengjun Sun; Xun He; Longcheng Zhang; Hui Zhang; Kai Dong; Zhengwei Cai; Dongdong Zheng; Yuntong Sun; Yongsong Luo; Qian Liu; Binwu Ying; Bo Tang; Xuping Sun; Wenchuang Hu

doi:10.1021/acs.inorgchem.3c01473

Improved Electrochemical Alkaline Seawater Oxidation over Cobalt Carbonate Hydroxide Nanowire Array by Iron Doping

Inorg Chem. 2023 Jul 31;62(30):11746-11750. doi: 10.1021/acs.inorgchem.3c01473. Epub 2023 Jul 14.

Authors

Shaorui Shi¹, Shengjun Sun², Xun He², Longcheng Zhang³, Hui Zhang², Kai Dong², Zhengwei Cai², Dongdong Zheng², Yuntong Sun², Yongsong Luo³, Qian Liu⁴, Binwu Ying¹, Bo Tang^{2

5}, Xuping Sun^{2

3}, Wenchuang Hu¹

Affiliations

¹ Department of Laboratory Medicine, Precision Medicine Center, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
² College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China.
³ Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China.
⁴ Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China.
⁵ Laoshan Laboratory, Qingdao 266237, Shandong, China.

PMID: 37449955
DOI: 10.1021/acs.inorgchem.3c01473

Abstract

Constructing efficient and low-cost oxygen evolution reaction (OER) catalysts operating in seawater is essential for green hydrogen production but remains a great challenge. In this study, we report an iron doped cobalt carbonate hydroxide nanowire array on nickel foam (Fe-CoCH/NF) as a high-efficiency OER electrocatalyst. In alkaline seawater, such Fe-CoCH/NF demands an overpotential of 387 mV to drive 500 mA cm^-2, superior to that of CoCH/NF (597 mV). Moreover, it achieves excellent electrochemical and structural stability in alkaline seawater.