Bimetallic ZIFs-derived electrospun carbon nanofiber membrane as bifunctional oxygen electrocatalyst for rechargeable zinc-air battery

被引：41

作者：

Ma, Yanan ^{[1
]}

Tang, Shaoru ^{[1
]}

Wang, Haimeng ^{[1
]}

Liang, Yuxuan ^{[1
]}

Zhang, Dingyu ^{[1
]}

Xu, Xiaoyang ^{[1
]}

Wang, Qian ^{[1
]}

Li, Wei ^{[1
]}

机构：

[1] Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China

来源：

JOURNAL OF ENERGY CHEMISTRY | 2023年 / 83卷

基金：

北京市自然科学基金;

关键词：

Electrospun nanofibers membranes; Zeolite imidazole framework; Zinc -air battery; ORR; OER bifunction; Dual single -atomic sites catalysts; HYDROGEN EVOLUTION; REDUCTION REACTION; POROUS CARBON; NANOPARTICLES; CATALYST; HYBRID; CO;

D O I：

10.1016/j.jechem.2023.03.054

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The recharged zinc-air battery (ZAB) has drawn significant attention owing to increasing requirement for energy conversion and storage devices. Fabricating the efficient bifunctional oxygen catalyst using a con-venient strategy is vitally important for the rechargeable ZAB. In this study, the bimetallic ZIFs-containing electrospun (ES) carbon nanofibers membrane with hierarchically porous structure was prepared by coaxial electrospinning and carbonization process, which was expected to be a bifunctional electrocata-lyst for ZABs. Owing to the formed dual single-atomic sites of Co-N4 and Zn-N4, the obtained ES-Co/Zn-CNZIF exhibited the preferable performance toward oxygen reduction reaction (ORR) with E1/2 of 0.857 V and JL of 5.52 mA cm-2, which were more than Pt/C. Meanwhile, it exhibited a marked oxygen evolution reaction (OER) property with overpotential of 462 mV due to the agglomerated metallic Co nanoparticles. Furthermore, the ZAB based on the ES-Co/Zn-CNZIF carbon nanofibers membranes delivered peak power density of 215 mW cm-2, specific capacity of 802.6 mA h g-1, and exceptional cycling stability, far larger than Pt/C+RuO2-based ZABs. A solid-state ZAB based on ES-Co/Zn-CNZIF showed better flexibility and sta-bility with different bending angles.& COPY; 2023 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.

引用

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页码：138 / 149

页数：12

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