Solid-state supercapacitor with impressive performance characteristics, assembled using redox-mediated gel polymer electrolyte
作者： B. Jinisha , K. M. Anilkumar , M. Manoj , C. Muhamed Ashraf , V. S. Pradeep
DOI: 10.1007/S10008-019-04428-W
关键词:
摘要: A solid-state supercapacitor is assembled using redox-mediated gel polymer as the electrolyte and separator coconut shell–derived, steam-activated carbon electrodes. The (GPE) based on poly(vinyl alcohol) (PVA)-potassium hydroxide (KOH)-hydroquinone (HQ), obtained solution casting technique. Amorphous nature of GPE confirmed from XRD studies complex formation in FTIR spectral analysis. films are electrochemically characterized impedance analysis, cyclic voltammetry galvanostatic charge/discharge test. Self-discharge also carried out. Higher ionic conductivity around 53 mS cm−1 superior flexibility serve main advantages this GPE. electrode-specific capacitance found to be high 326.53 F g−1 with a capacity retention 84.2% after being subjected 1000 charge-discharge cycles at current density 0.8 A g−1. supercapacitors offer quite energy power 33.15 Wh kg−1 689.58 W kg−1, respectively. These types redox-mediated, flexible, electrolytes desirable for designing storage applications.
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