Abstract
In the present work, a novel polymer composite electrolytes (PCEs) based on poly(vinyl alcohol) (PVA): ammonium thiocyanate (NH4SCN): Cd(II)-complex plasticized with glycerol (Gly) are prepared by solution cast technique. The film structure was examined by XRD and FTIR routes. The utmost ambient temperature DC ionic conductivity (σDC) of 2.01 × 10−3 S cm−1 is achieved. The film morphology was studied by field emission scanning electron microscopy (FESEM). The trend of σDC is further confirmed with investigation of dielectric properties. Transference numbers of ions (tion) and electrons (tel) are specified to be 0.96 and 0.04, respectively. Linear sweep voltammetry (LSV) displayed that the PCE potential window is 2.1 V. The desired mixture of activated carbon (AC) and carbon black was used to fabricate the electrodes of the EDLC. Cyclic voltammetry (CV) was carried out by sandwiching the PCEs between two carbon-based electrodes, and it revealed an almost rectangular shape. The EDLC exhibited specific capacitance, energy density, and equivalent series resistance with average of 160.07F/g, 18.01Wh/kg, and 51.05Ω, respectively, within 450 cycles. The EDLC demonstrated the initial power density as 4.065 × 103 W/Kg.
Highlights
Proton conducting polymer-based electrolyte is emerged like an important subject for uses in energy storage devices
The peaks at roughly 2θ = 20◦ and 40◦ that have been discerned in the pure poly(vinyl alcohol) (PVA) X-ray Diffraction (XRD) spectrum are correlated in earlier documents with the PVA crystalline domains [5,7]
The results of this study established that metal complex is crucial
Summary
Proton conducting polymer-based electrolyte is emerged like an important subject for uses in energy storage devices. Proton-conducting PEs with powerful inorganic acid for instance sulfuric acid (H2 SO4 ) [3] as well as phosphoric acid (H3 PO4 ) [4] have drawbacks because of the chemical degradation with a weak mechanical integrity. For this reason, ammonium salts have been employed as excellent candidates instead of inorganic acids as a source for H+ ions in PEs [5,6]. Poly(vinyl alcohol), PVA, is one of the main biodegradable and biocompatible polymers with non-toxic property
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