Enhanced synergistic redox activity of SrCoS/PANI for hybrid energy storage and oxygen evolution reaction

• Published in: Physica scripta 2024-03, Vol.99 (3), p.35955
• Main Authors: Hassan, Haseebul, Iqbal, Muhammad Waqas, Akbar, Saima, Afzal, Amir Muhammad, Umar, Ehtisham, Mohammad, Saikh, Alothman, Asma A, Ahmad, Niaz, Elahi, Ehsan
• Format: Article
• Language: English
• Subjects: HER; hybrid supercapacitors; supercapattery
• ISSN: 0031-8949; 1402-4896
• DOI: 10.1088/1402-4896/ad28a4

Supercapacitors (SCs) and secondary batteries (SBs) are commonly utilized for energy storage, although each has some limitations: low energy density (E d ) and power density (P d ), respectively. To address these issues, a hybrid supercapacitor is a new emerging technique known as supercapattery, which combines both of these devices to optimum the E d and P d in a single setting. The hydrothermal method was adopted to synthesize a cost-effective, eco-friendly, and non-toxic SrCoS/PANI, a composite material for optimum results of supercapattery. Crystallinity and morphology study of synthesized nanocomposites strontium cobalt sulfide with Polyaniline (SrCoS/PANI) were examined using SEM and XRD techniques. Initially, the performance was tested using a three-electrode setup of nanocomposites (SrCoS/PANI) in 1 M KOH electrolyte. The effectiveness of a SrCoS/PANI-activated carbon two-electrode supercapattery was examined through cyclic CV, GCD, and EIS techniques. In the two electrodes setup, the device performs admirably with an astonishing specific capacity of 139.4 C g −1 , a high E d of 29.56 Wh kg −1 , and a high P d of 800 W kg −1 at 1.0 A g −1 . The cyclic stability was tested by putting the device through 5000 charging and discharging cycles, which maintained 91.65% of its Specific capacity (Q s ). A hybrid nanocomposite (SrCoS/PANI) device was accomplished, with exceptional electrochemical capabilities at a low price making them a fascinating active material with potential applications in supercapattery technology. The electrocatalytic performance of the synthesized nanostructure (NSs) was studied comprehensively with regard to an oxygen evolution reaction (OER).