Facile synthesis of a MOF-derived Co-N-C nanostructure as a bi-functional oxygen electrocatalyst for rechargeable Zn-air batteries.

ABSTRACT: A novel catalyst obtained from the pyrolysis of a Co/Fe/Zn zeolitic imidazolite framework was prepared as an oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) electrocatalyst. The Co-N-C-900 catalyst displays promising ORR and OER activity with E_1/2 = 0.854 V and E_j=10 = 1.780 V. The rechargeable Zn-air battery equipped with a Co-N-C-900 cathode electrocatalyst illustrates a high peak power density of 275 mW cm^-2, which is much superior than that of commercial 20% Pt/C. Significantly, the designed Zn-air battery with the Co-N-C-900 catalyst presents good cycling stability for 180 h in the rechargeable Zn-air battery.

SUBMITTER: Luo X 

PROVIDER: S-EPMC10282735 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature