CoFe2O4 supported on g-CN nanosheet for oxygen evolution reaction in basic media.

This research aims to produce a highly stable, effective, economical, and novel electro-active catalyst for the oxygen evolution reaction, a significant advancement in green energy. The potential impact of this research is inspiring, as it could pave the way for more efficient and cost-effective green energy solutions. In this study, a CoFe 2 O 4 /g-CN composite catalyst was synthesized via the hydrothermal method. The samples were studied using several analytical techniques to evaluate shape and structure. This study used g-CN ultra-thin nanosheets as carriers for CoFe 2 O 4 nanoparticles to increase their active area and thus enhance their electrocatalytic performance. CoFe 2 O 4 /g-CN exhibited an improved ECSA (electrochemical active surface area) of 1337.5 cm2 and a higher Cdl value of 53.5 mF/cm2, significantly superior to the pristine CoFe 2 O 4. In comparison with pristine CoFe 2 O 4 , CoFe 2 O 4 /g-CN composite required a considerably reduced overpotential (ղ) of 200 mV to accomplish a current density (j) (10 mA/cm2). CoFe 2 O 4 /g-CN composite exhibited high stability of 35 h and a comparatively low Tafel plot (39 mV/dec). Considering all of these characteristics, it is clear that the CoFe 2 O 4 /g-CN composite could be an excellent electrocatalyst for the OER process. [Display omitted] • CoFe 2 O 4 /g-CN composite was fabricated via hydrothermal techniques for OER. • CoFe 2 O 4 /g-CN composite has a greater electrocatalytic efficiency for OER. • The small overpotential (200 mV) is required to attain 10 mA/cm2 having a Tafel plot (39 mV/dec). • CoFe 2 O 4 /g-CN demonstrated remarkable stability of 35 h. [ABSTRACT FROM AUTHOR]