三金属沸石咪唑框架衍生的钴纳米颗粒@钴铁氮掺杂多孔碳作为锌空气电池的双功能电催化剂
Trimetallic Zeolitic imidazolite framework-derived Co nanoparticles@CoFe-nitrogen-doped porous carbon as bifunctional electrocatalysts for Zn-air battery.
作者信息
Hao Rui, Chen Jingjing, Wang Zhenyu, Huang Yanping, Liu Penggao, Yan Jun, Liu Kaiyu, Liu Chen, Lu Zhouguang
机构信息
Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China; Department of Materials Science and Engineering, Shenzhen Key Laboratory of Hydrogen Energy, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology, Shenzhen 518055, PR China.
Department of Materials Science and Engineering, Shenzhen Key Laboratory of Hydrogen Energy, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology, Shenzhen 518055, PR China.
出版信息
J Colloid Interface Sci. 2021 Mar 15;586:621-629. doi: 10.1016/j.jcis.2020.10.130. Epub 2020 Nov 3.
Searching for high active, low cost and durable catalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) remains challenge in developing metal-air battery cathodes. Herein, we proposed a novel bifunctional catalyst derived from the pyrolysis of Co/Fe/Zn trimetallic zeolitic imidazolite framework. The obtained Co@CoFeNC catalyst displays desirable activity for both ORR and OER (E = 0.844 V, E = 1.654 V). The Zn-air battery equipped with Co@CoFeNC catalyst on the cathode exhibits a high peak power density of 174.1 mW cm, which is much superior than that of commercial 20% Pt/C (87.6 mW cm). Significantly, the designed Co@CoFeNC presents an outstanding stability for over 100 h in rechargeable Zn-air battery.
寻找用于氧还原反应（ORR）和析氧反应（OER）的高活性、低成本且耐用的催化剂仍然是开发金属空气电池阴极的一项挑战。在此，我们提出了一种由Co/Fe/Zn三金属沸石咪唑框架热解衍生的新型双功能催化剂。所获得的Co@CoFeNC催化剂对ORR和OER均表现出理想的活性（E = 0.844 V，E = 1.654 V）。在阴极配备Co@CoFeNC催化剂的锌空气电池表现出174.1 mW cm的高峰功率密度，这远优于商业20% Pt/C（87.6 mW cm）。值得注意的是，所设计的Co@CoFeNC在可充电锌空气电池中在超过100小时内表现出出色的稳定性。
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