The exploration and synthesis of perovskites La0.2Sr0.8MnO3 electrode material for supercapacitor application.

Herein, Agglomerated nanoflakes like perovskite lanthanum strontium manganite (La0.2Sr0.8MnO3) material fabricated using an essential-route solution combustion method followed by a post-annealing procedure. Finally screen printed electrode used as the materials for high performance supercapacitors. The phase identification of Perovskite La0.2Sr0.8MnO3 nanostructure was tested by X-ray diffractometer (XRD) and Fourier transform infrared (FT-IR) analysis confirms rhombohedral phase. Morphological studies were authenticated by Field emission scanning electron microscope (FE-SEM) showed that the well-developed agglomerated porous nanoflakes structured La0.2Sr0.8MnO3 were prepared. Active surface area analysis was done by (BET) N2 physisorption technique. The electrochemical properties of the screen-printed materials were tested using a three-electrode system. As a result, the perovskite La0.2Sr0.8MnO3 electrode material showed a higher Csp of 710 F/g at a current density of 10 A/g within the potential range of -0.8 to 0.4 V in 1 M KOH electrolyte solution. In addition, the perovskite La0.2Sr0.8MnO3 electrode material delivered excellent cycling stability, retaining 72.05 % of its initial Csp after 5000 successive cyclic voltammetry (CV) cycles. These results show that the unique solution combustion synthesized perovskite La0.2Sr0.8MnO3 electrode material has remarkable application potential and can achieve better characteristics for high-performance supercapacitors in energy storage applications