Benzoate anions-intercalated NiFe-layered double hydroxide nanosheet array with enhanced stability for electrochemical seawater oxidation

Longcheng Zhang; Jie Liang; Luchao Yue; Kai Dong; Jun Li; Donglin Zhao; Zerong Li; Shengjun Sun; Yongsong Luo; Qian Liu; Guanwei Cui; Abdulmohsen Ali Alshehri; Xiaodong Guo; Xuping Sun

doi:10.26599/NRE.2022.9120028

Nano Research Energy (Dec 2022)

Benzoate anions-intercalated NiFe-layered double hydroxide nanosheet array with enhanced stability for electrochemical seawater oxidation

Longcheng Zhang,
Jie Liang,
Luchao Yue,
Kai Dong,
Jun Li,
Donglin Zhao,
Zerong Li,
Shengjun Sun,
Yongsong Luo,
Qian Liu,
Guanwei Cui,
Abdulmohsen Ali Alshehri,
Xiaodong Guo,
Xuping Sun

Affiliations

Longcheng Zhang: Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
Jie Liang: Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
Luchao Yue: Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
Kai Dong: Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
Jun Li: Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
Donglin Zhao: Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
Zerong Li: Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
Shengjun Sun: Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
Yongsong Luo: Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
Qian Liu: Institute for Advanced Study, Chengdu University, Chengdu 610106, China
Guanwei Cui: College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
Abdulmohsen Ali Alshehri: Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
Xiaodong Guo: School of Chemical Engineering, Sichuan University, Chengdu 610065, China
Xuping Sun: Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China

DOI: https://doi.org/10.26599/NRE.2022.9120028
Journal volume & issue: Vol. 1, no. 3
p. e9120028

Abstract

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Seawater electrolysis is an extremely attractive approach for harvesting clean hydrogen energy, but detrimental chlorine species (i.e., chloride and hypochlorite) cause severe corrosion at the anode. Here, we report our recent finding that benzoate anions-intercalated NiFe-layered double hydroxide nanosheet on carbon cloth (BZ-NiFe-LDH/CC) behaves as a highly efficient and durable monolithic catalyst for alkaline seawater oxidation, affords enlarged interlayer spacing of LDH, inhibits chlorine (electro)chemistry, and alleviates local pH drop of the electrode. It only needs an overpotential of 320 mV to reach a current density of 500 mA·cm–2 in 1 M KOH. In contrast to the fast activity decay of NiFe-LDH/CC counterpart during long-term electrolysis, BZ-NiFe-LDH/CC achieves stable 100-h electrolysis at an industrial-level current density of 500 mA·cm–2 in alkaline seawater. Operando Raman spectroscopy studies further identify structural changes of disordered δ (NiIII-O) during the seawater oxidation process.

Published in Nano Research Energy

ISSN: 2791-0091 (Print); 2790-8119 (Online)
Publisher: Tsinghua University Press
Country of publisher: China
LCC subjects: Science: Chemistry; Science: Physics
Website: https://www.sciopen.com/journal/2791-0091

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