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

초록

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 CoFe2O4/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 CoFe2O4 nanoparticles to increase their active area and thus enhance their electrocatalytic performance. CoFe2O4/g-CN exhibited an improved ECSA (electrochemical active surface area) of 1337.5 cm(2) and a higher Cdl value of 53.5 mF/cm(2), significantly superior to the pristine CoFe2O4. In comparison with pristine CoFe2O4, CoFe2O4/g-CN composite required a considerably reduced overpotential (eta) of 200 mV to accomplish a current density (j) (10 mA/cm(2)). CoFe2O4/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 CoFe2O4/g-CN composite could be an excellent electrocatalyst for the OER process.

키워드