Journal
MATERIALS TODAY CHEMISTRY
Volume 33, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mtchem.2023.101740
Keywords
Conductive polymer; Gel polymer electrolyte; Supercapacitor; Ionic conductivity; Cobalt oxide filler; Electronic double-layer capacitor
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Designing high-performance polymer-based electrolytes is crucial for enhancing the conductivity of electrochemical capacitors. In this study, a highly conductive polymer/inorganic hybrid electrolyte was developed to improve the ionic conductivity by increasing the free volume between the polymer chains, and it was found that rod-like or other similarly shaped fillers can promote the formation of ionic conduction networks to improve the ionic conductivity.
Designing high-performance polymer-based electrolytes is crucial for enhancing the conductivity of electrochemical capacitors. In this study, a highly conductive polymer/inorganic hybrid electrolyte was developed to improve the ionic conductivity by increasing the free volume between the polymer chains. The filler promotes the movement of OH- ions in the polymer gel electrolyte and enhances the device performance by facilitating the rapid movement of the polymer chains. In particular, rod-like or other similarly shaped fillers promote the formation of ionic conduction networks to improve the ionic conductivity. The use of the urchin-shaped Co3O4 (U-Co3O4) filler (4 wt%) facilitates a high ionic conductivity of 2.61 x 10-2 S cm- 1 at room temperature because the U-Co3O4 surface acts as a conductive network in the polymer matrix contributing to the rapid ionic transport. Therefore, an optimal filler morphology is for increasing the performance of gel polymer electrolytes.
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