Cobalt, iron, and nitrogen co-doped graphene coated ceramic nanowire-based bifunctional oxygen electrocatalyst for Zn-air battery
Date
2023
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Tartu Ülikool
Abstract
Structural and elemental composition of several graphene-coated Al2O3 nanowire-based cat-
alyst materials prepared by functionalization with dicyandiamide and Fe and Co salts via
pyrolysis were studied using several physical characterisation methods. Electrocatalytic ox-
ygen reduction reaction (ORR) activity of the materials was studied using the rotating disk
electrode method in a 0.1 M KOH solution. Using the same method, the oxygen evolution
reaction activity was studied for the catalyst material with the highest ORR activity. Addi-
tionally, the catalyst’s rechargeable Zn-air battery performance was assessed, showing su-
perior power output and cycle life than those of a commercial Pt-Ru/C catalyst.
Description
Keywords
electrocatalysis, oxygen reduction reaction, oxygen evolution reaction, non-pre- cious metal catalyst, Zn-air battery, ceramic nanowire