| dc.description.abstract | In this study, we introduce two concepts of circular economy and biomimetic materials into nanocomposite electrodes for fabricating all-solid-state flexible supercapacitors (ssFSCs). The designed nanocomposites were composed of montmorillonite (MMT), ruthenium dioxide nanoparticles (RuO2 NPs), polyvinyl alcohol (PVA) and Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). We investigated structure-property-performance relationships of the ECO-firendly all-solid-state flexible supercapacitor using X-ray diffraction, transmission X-ray microscope, X-ray absorption spectroscopy, electron microscope, testing machine, contact angle and potentiostat–galvanostat. Attributing to RuO2 NPs size and their distribution in the structural electrodes, a house-of-cards structure and a nacre-like structure were respectively obtained from synthesized method A and method B. We found that the house-of-cards structural ssFSC features higher performance of storage energy but lower mechanical strength than the nacre-like structural ssFSC. The capacitance of the house-of-cards ssFSC is up to 568 mF/cm2 (71 F/g), which is also better than the RuO2-based ssFSCs. Furthermore, their maximum energy and power densities are respectively calculated as 40.6 Wh/cm2 (10.2Wh/kg) and 4 mW/cm2 (1000W/kg). Concerning recycling of electrodes for the circular economy, storage energy performance of the recycled devices can perform about 70% of the original devices. | en_US |