Metal–Organic-Framework-Derived Nitrogen-Doped Carbon-Matrix-Encapsulating Co0.5Ni0.5 Alloy as a Bifunctional Oxygen Electrocatalyst for Zinc–Air Batteries Article Swipe

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Jinglin Liu , Lina Han , Shicai Xiao , An‐Qi Zhu , Yingjie Zhang , Xiaoyuan Zeng , Peng Dong ·

YOU? · · 2024 · Open Access · · DOI: https://doi.org/10.3390/ma17112629

The development of low-cost, high-performance oxygen electrocatalysts is of great significance for energy conversion and storage. As a potential substitute for precious metal electrocatalysts, the construction of efficient and cost-effective oxygen electrocatalysts is conducive to promoting the widespread application of zinc–air batteries. Herein, CoxNiyMOF nanoparticles encapsulated within a carbon matrix were synthesized and employed as cathode catalysts in zinc–air batteries. Co0.5Ni0.5MOF exhibits superior oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) performance and durability. The zinc–air battery assembled with Co0.5Ni0.5MOF as the air cathode exhibits a maximum power density of 138.6 mW·cm−2. These improvements are mainly attributed to the optimized metal composition of the cobalt–nickel alloy, which increases the specific surface area of the material and optimizes its pore structure. Significantly, the optimization of the electronic structure and active sites within the material has led to amplified ORR/OER activity and better zinc–air battery performance. This study underscores the immense promise of Co0.5Ni0.5MOF catalysts as feasible substitutes for commercial Pt/C catalysts in zinc–air batteries.

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Metal–Organic Framework

Concepts

Bifunctional Electrocatalyst Materials science Zinc Alloy Carbon fibers Metal Inorganic chemistry Doping Oxygen Metal-organic framework Oxygen evolution Chemistry Catalysis Metallurgy Electrode Organic chemistry Electrochemistry Composite number Composite material Physical chemistry Adsorption Optoelectronics

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Type: article
Language: en
Landing Page: https://doi.org/10.3390/ma17112629
PDF: https://www.mdpi.com/1996-1944/17/11/2629/pdf?version=1716981690
OA Status: gold
Cited By: 2
References: 26
Related Works: 10
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DOI: https://doi.org/10.3390/ma17112629

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Title: Metal–Organic-Framework-Derived Nitrogen-Doped Carbon-Matrix-Encapsulating Co0.5Ni0.5 Alloy as a Bifunctional Oxygen Electrocatalyst for Zinc–Air Batteries

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Language: en

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Publication year: 2024

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Publication date: 2024-05-29

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Authors: Jinglin Liu, Lina Han, Shicai Xiao, An‐Qi Zhu, Yingjie Zhang, Xiaoyuan Zeng, Peng Dong

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Landing page: https://doi.org/10.3390/ma17112629

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Concepts: Bifunctional, Electrocatalyst, Materials science, Zinc, Alloy, Carbon fibers, Metal, Inorganic chemistry, Doping, Oxygen, Metal-organic framework, Oxygen evolution, Chemistry, Catalysis, Metallurgy, Electrode, Organic chemistry, Electrochemistry, Composite number, Composite material, Physical chemistry, Adsorption, Optoelectronics

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Cited by: 2

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