One of the most pressing concerns in today's power networks is ensuring that consumers (both home and industrial) have access to efficient and long-lasting economic energy. Due to improved power accessibility and high specific capacitance without deterioration over long working times, supercapacitor-based energy storage systems can be a viable solution to this problem. So, here, tungsten trioxide (WO3) nanocomposites containing reduced graphene oxide and carbon nanotubes i.e. (RGO-WO3), (CNT-WO3), and (RGO-CNT-WO3), as well as pure WO3 nanostructures as electrode materials, were synthesized using a simple hydrothermal process. The monoclinic phase of WO3 with high diffraction peaks is visible in X-ray diffraction analysis, indicating good crystallinity of all electrode materials. Nanoflowers of WO3 were well-decorated on the RGO/CNTs conductive network in SEM micrographs. In a three-electrode system, the specific capacitance of the RGO-CNT-WO3 electrode is 691.38 F g-1 at 5 mV s-1 and 633.3 F g-1 at 2 A g-1, which is significantly higher than that of pure WO3 and other binary electrodes. Furthermore, at 2 A g-1, it achieves a coulombic efficiency of 98.4%. After 5000 cycles, RGO-CNT-WO3 retains 89.09% of its capacitance at 1000 mV s-1, indicating a promising rate capability and good cycling stability performance.
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