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The study divulges the innovative route to the synthesis of strontium oxide (SrO) nanorods integrated with polyaniline (SrO-PANI) by using physical blending method and utilized for high performance asymmetric supercapacitor. The synthesized nanocomposites (NCs) are initially characterized by using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The electrochemical performance of the NCs is evaluated for energy storage applications. The results demonstrated that the SrO-PANI NCs yield a maximum specific capacity (Q_s) of 258 C g⁻¹ at current density of 0.8 A g⁻¹ in three electrode assembly and exhibit better electrochemical stability as compared to PANI and SrO nanorods. Supercapattery device is fabricated by using SrO-PANI NCs. Results reveal that supercapattery device gives an improved energy density of 24 Wh kg⁻¹ and the maximum power density is 2240 W kg⁻¹. Furthermore, the …