Novel zinc complex/carbon dots composites were prepared using gamma irradiation. Addition of ethylenediamine improved the specific capacitance by 290.6 %. A specific capacitance of 179.9 F g−1 was obtained and a capacitance retention of 91 % was obtained after 10,000 cycles. Gamma irradiation produced unique composite materials for supercapacitor electrode.
Novel amine-incorporated zinc complex/carbon dots composites were created and used as supercapacitor electrode materials in this study. By using a one-step gamma irradiation, the amine-incorporated zinc complex/carbon dots composites were prepared from zinc acetate dihydrate, ethylenediamine, and carbon dots. The impacts of ethylenediamine and carbon dots on the performance of the supercapacitor were examined. The highest specific capacitance obtained in this work was 179.9 F g−1 along with an excellent 91 % capacitance retention after 10,000 cycles. To clarify the mechanistic insights on the improved supercapacitor performance, an electrochemical analysis was performed, and it was found that amine incorporation improved the diffusion process of charge transfer, which led to better charge storage and higher capacitance. We have demonstrated that gamma irradiation is a simple and efficient method for creating electro-active materials based on amine-incorporated zinc complex/carbon dots composites for supercapacitors with improved performance and electrochemical properties.Zum Volltext