JOURNAL OF ENERGY STORAGE, cilt.86, ss.1-11, 2024 (SCI-Expanded)
NiCo2S4 (NCS) and Polyindole (PIn) are two effective electrode materials used in energy storage systems. In this
study, NCS@PIn hybrid structures were synthesized for the first time and the effects of PIn amount on the
supercapacitor performance of NCS were evaluated. For this purpose, first, the PIn hollow microspheres were
obtained by oxidative polymerization reaction. Then, the NCS was produced by a one-step hydrothermal synthesis approach and NCS@PIn composites in three different composition ratios were prepared by a simple ultrasonic mixing process. The NCS exhibited a specific areal capacitance value of 834.6 F g− 1 at a current density
of 1 A g− 1
. The electrochemical performance of NCS was improved via a hybridization process. After composing
NCS with 5 % PIn (NCS@PIn-5), the specific capacitance value reached up to 1442.8 F g− 1 which was higher
than those of PIn, NCS, and the other NCS@PIn hybrid electrodes. In addition, the NCS@PIn-5 coated electrode
exhibited a charged retention of 94.7 % after 5000 cycles.