Photo-Rechargeable Electrochemical Supercapacitors Based on Two-Dimensional Hybrid Halide Perovskites

Abstract

Two-dimensional HP has recently emerged as new materials for future energy storage gadgets because of their superiorphotoactivity and mixed electronic-ionic conductivity. Due to the growing demand of self-powered and mobile energy, the suitability of the layered 2D HPs (Arg2MA2Sn3Cl10) for photo-rechargeable electrochemical supercapacitors was investigated in this study. The HPs were synthesized by inverse temperature crystallization method and analyzed by UV-visible spectroscopy, XRD and FESEM to verify the crystallinity, optical bandgap (3.67 eV) and morphology (layered morphology) of as-prepared HPs. Electrochemical property was examined in dark condition and illumination condition under CV and GCDmeasurement. The material displayed the photo-rechargeable ability considering the specific capacitanceof 49.09 F/g under illumination and 43.63 F/g in the dark at the scan rate of 10 mV/s. In addition, The densities of power and energyreached 20.55 Wh/kg and 80 W/kg respectively. The experimental results demonstrate the dual functionality of the 2D HPs as both promising energy storage material and photo-absorbing layer that make it suitable for photo-rechargeable SSC applications. This work opens the way for further investigation of hybrid halide perovskites for the purpose of combined systems for collecting and storing energyfor sustainable and self-sufficient power devices for portable electronics and IoT devices.