An Efficient Oxygen Reduction Catalyst for Zn-Air Battery: Cobalt Nanoparticles Encapsulated in 3D Nitrogen-Doped Porous Carbon Networks Derived from Fish Scales,ChemCatChem

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An Efficient Oxygen Reduction Catalyst for Zn-Air Battery: Cobalt Nanoparticles Encapsulated in 3D Nitrogen-Doped Porous Carbon Networks Derived from Fish Scales
ChemCatChem ( IF 3.8 ) Pub Date : 2021-03-08 , DOI: 10.1002/cctc.202001855
Jiankang Sun ₁ , Xiaoyu Qiu ₁ , Zhengyun Wang ₁ , Zhuo Peng ₁ , Lipei Jiang ₁ , Guangfang Li ₁ , Haitao Wang ₂ , Hongfang Liu ₃

Affiliation

The development of a simple and eco-friendly approach for synthesizing high-activity and low-cost electrocatalysts remains a huge challenge for the commercialization of zinc-air battery technology. Herein, a facile method is demonstrated to skillfully fabricate cobalt nanoparticles encapsulated in N-doped micro/mesoporous carbon networks (Co/N-MC) by using natural fish scales as carbon source. The effects of pyrolysis temperature on microstructure, N-doping and oxygen reduction reaction (ORR) electrocatalytic activity of the obtained Co/N-MC samples are systematically investigated. The as-synthesized Co/N-MC catalyst exhibits better ORR catalytic activity, stability as well as superior Zn-air battery performance compared with commercial 20 % Pt/C catalyst, owing to its three-dimensional structures and synergistic effect of N species. The simple and eco-friendly strategy developed for ORR catalyst in this study holds great potential for the commercial application of zinc-air batteries.

中文翻译：

锌空气电池的高效减氧催化剂：钴纳米颗粒封装在鱼鳞衍生的3D氮掺杂多孔碳网络中

对于锌-空气电池技术的商业化而言，开发一种简单且环保的方法来合成高活性和低成本的电催化剂仍然是一个巨大的挑战。在本文中，已证明了一种简便的方法，可以通过使用天然鱼鳞作为碳源，熟练地制备封装在N掺杂的微/中碳网络（Co / N-MC）中的钴纳米颗粒。系统地研究了热解温度对所得Co / N-MC样品的微观结构，N掺杂和氧还原反应（ORR）电催化活性的影响。与市售的20％Pt / C催化剂相比，合成后的Co / N-MC催化剂具有更好的ORR催化活性，稳定性以及出色的Zn-空气电池性能，这归因于其三维结构和N物种的协同效应。

更新日期：2021-03-08

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