Novel synthesis of WO3/rGO nanocomposite for next generation high-performance solid-state supercapacitor applications

초록

Energy storage mechanism will be vital to meeting the growing global demands of the modern economy. In Supercapacitor-based electrochemical systems potential to improve the active materials are more important to enhance potential applied supercapacitors. Herein, we reported a fungus-mediated green synthesis approach to prepare WO3 nanoflakes incorporated with reduced graphene oxide (rGO) nanocomposite as active electrode materials. The WO3/rGO nanocomposites showed superior electrochemical performance and a high specific capacitance of 588 F g−1 at a current density of 1 g−1 in a three-electrode system compare to literatures. Furthermore, the fabricated WO3/rGO//activated carbon (AC) asymmetric supercapacitor device delivered an energy density of 47.22 Wh kg−1 with a power density of 1000 W kg−1 at a current density of 1 A g−1, maintaining coulombic efficiency of 97.5% and 94.7% capacitive retention after 5000 cycles. The high energy and power density of the fungus mediated biosynthesized WO3/rGO nanocomposite could be an exciting electrode material with great potential for use in energy storage devices and higher performance than the previously reported asymmetric supercapacitors. © 2026 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies.

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