Issue 24, 2021

Cation vacancy driven efficient CoFe-LDH-based electrocatalysts for water splitting and Zn–air batteries

Abstract

Rational design of multifunctional electrocatalysts can optimize the mutual conversion of water and oxygen. CoFe-LDH-based electrocatalysts with highly tunable electronic, component, and catalytic properties have attracted considerable attention. Herein, we report the synthesis of cation vacancy rich CoFe-LDH (CoFeV-LDH) and its trace Pt loaded material (Pt@CoFeV-LDH, Pt dosage: 2.85%), which can act as an efficient electrocatalyst toward the oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and oxygen reduction reaction (ORR). The electrolyzer comprising the CoFeV-LDH cathode and Pt@CoFeV-LDH anode exhibited excellent water splitting performance with a small cell voltage of 1.57 V to reach 10 mA cm−2 and 99% efficiency after 8 h. Furthermore, the liquid-state ZAB using CoFeV-LDH//Pt@CoFeV-LDH as air electrodes shows satisfactory charge–discharge performance with excellent reversibility of 50 h at 50 mA cm−2.

Graphical abstract: Cation vacancy driven efficient CoFe-LDH-based electrocatalysts for water splitting and Zn–air batteries

Supplementary files

Article information

Article type
Paper
Submitted
10 sep 2021
Accepted
04 okt 2021
First published
06 okt 2021
This article is Open Access
Creative Commons BY-NC license

Mater. Adv., 2021,2, 7932-7938

Cation vacancy driven efficient CoFe-LDH-based electrocatalysts for water splitting and Zn–air batteries

Z. Kong, J. Chen, X. Wang, X. Long, X. She, D. Li and D. Yang, Mater. Adv., 2021, 2, 7932 DOI: 10.1039/D1MA00836F

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