Sonochemically produced ternary metallic sulfides to enhance the electrochemical performance of asymmetric supercapacitors

Designing compositions of transition metal alloys alongside their nanostructures remains pivotal in the creation of electrochemical energy storage devices. Supercapacitors, renowned for their remarkable electrochemical capabilities, have garnered substantial interest. Nonetheless, there persists a need for electrode materials exhibiting enhanced charge storage characteristics. In this respect, the simple sonochemical method was used to easily synthesize various magnesium, silver, and copper sulfide composites. In a three-electrode setup, the electrode material Mg25Ag50Cu25S (MACS) exhibits outstanding electrochemical properties. MACS enabled the attainment of an outstanding specific capacity of 825 C/g at 1.0 A/g, showcasing its remarkable performance in this regard. Asymmetric supercapacitors were also made with the MACS. This assembly allowed the charge-storing ability to be further examined in two electrode setup. The MACS//AC device showed an outstanding energy density of 45 Wh/kg having an 850 W/kg power density thus demonstrating exceptional energy-storing ability. Cyclic stability of 73% after 5000 GCD cycles was also shown by this MACS//AC device. The developed ternary metal sulfides exhibit outstanding properties when assessed against previously published literature, offering an effective and preferred component in future storage technologies.