Guo, Yinghua, Yan, Liang, Li, Jing, Shi, Jiawei, Liu, Zhao, Fan, Liyuan, and Cai, Weiwei (2023) Zeolitic imidazolate framework induced CoFe-PBA/Carbides hollow cube toward robust bi-functional electrochemical oxygen reaction. Chemical Engineering Journal, 472. 144818.

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Abstract

The incorporation of a multi-stage porous structure in the design of bifunctional electrocatalysts for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) is crucial for facilitating efficient material transport processes in zinc-air batteries (ZABs). In this work, a combination of zeolitic imidazolate framework-67 (ZIF-67) templates and acid etching techniques is employed to integrate the micropores of CoFe Prussian blue analogue (CoFe-PBA), mesopores formed by acid etching, and the macropores derived from ZIF-67 templates. This integration results in the formation of sc-PBA/Carbides@NC hollow nanobox catalysts with a multi-stage porous structure. This allows maximum exposure of active sites within the catalyst and significantly enhances material transport during electrochemical reactions. As a result, the ZAB assembled with sc-PBA/Carbides@NC catalyst shows a peak power density of 235mW cm−2 and excellent stability, thus indicating promising prospects for practical applications.

Item ID:	79715
Item Type:	Article (Research - C1)
ISSN:	1873-3212
Copyright Information:	© 2023 Elsevier B.V. All rights reserved.
Date Deposited:	15 Aug 2023 00:47
FoR Codes:	40 ENGINEERING > 4004 Chemical engineering > 400404 Electrochemical energy storage and conversion @ 100%
SEO Codes:	17 ENERGY > 1704 Energy transformation > 170401 Fuel cells (excl. solid oxide) @ 100%
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