Active supercapacitors are a class of energy storage devices that have fascinated the scientifc community owing to their high power capacity with long cycle life, low cost, and low maintenance. Recently, supercapacitors are being widely used in memory backup, consumer electronics, and industrial power management1–3 . In addition, supercapacitors are safer and have a lesser environmental impact than batteries2,3 . Mainly, the specifc capacitance of a supercapacitor depends on the electrode materials and thus, electrode materials of supercapacitors play an important role. Tere are several electrode materials available for supercapacitors; the most common are carbon materials owing to their high conductivity, large specifc surface area, diferent forms, and abundance. However, their activity is not sufcient, owing to their low specifc energy. In addition, the inset surface of carbon materials makes it difcult for electrolytes to further penetrate the internal layers of carbon4 . Diferent approaches have been employed to overcome these issues like introduction of metal oxides, hetero atoms, and coupling of two or more materials. In recent years, heterostructure nanomaterials comprising two or three diferent functionalities showed enhanced or diferent physicochemical performances compared to single functionality materials5 . Among the various heterostructure features, core-shell structures exhibit superior performances owing to the combined efects of cores and shells6,7 . Meanwhile, metal sulfdes including nickel sulfdes, cobalt sulfdes, and bismuth disulfdes are very important semiconductor materials and have been employed to develop supercapacitor electrodes8–11. Among these, bismuth sulfde (Bi2S3) has a lamellar structure with a 1.3–1.7 eV direct band gap and these features ofers potential applications in the feld of thermoelectric cooler devices12, lithium-ion batteries13, and optoelectronic devices14 owing to the possibility of band gap tuning with diferent sizes of the subcomponent