Journal of Colloid and Interface Science, Vol.586, 621-629, 2021
Trimetallic Zeolitic imidazolite framework-derived Co nanoparticles@CoFe-nitrogen-doped porous carbon as bifunctional electrocatalysts for Zn-air battery
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 [email protected] catalyst displays desirable activity for both ORR and OER (E-1/2 = 0.844 V, E-j=10 = 1.654 V). The Zn-air battery equipped with [email protected] catalyst on the cathode exhibits a high peak power density of 174.1 mW cm(2), which is much superior than that of commercial 20% Pt/C (87.6 mW cm(2)). Significantly, the designed [email protected] presents an outstanding stability for over 100 h in rechargeable Zn-air battery. (C) 2020 Elsevier Inc. All rights reserved.