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Solid-State EDLC Device Based on Magnesium Ion-Conducting Biopolymer Composite Membrane Electrolytes: Impedance, Circuit Modeling, Dielectric Properties and Electrochemical Characteristics.
- Source :
-
Membranes [Membranes (Basel)] 2020 Dec 02; Vol. 10 (12). Date of Electronic Publication: 2020 Dec 02. - Publication Year :
- 2020
-
Abstract
- The polymer electrolyte based on Dx:Cs:Mg(CH <subscript>3</subscript> COO) <subscript>2</subscript> :Ni with three different glycerol concentrations have been prepared. The impedance study has verified that the electrolyte with 42 wt.% of glycerol (A3) has the highest ionic conductivity of 7.71 × 10 <superscript>-6</superscript> S cm <superscript>-1</superscript> at room temperature. The ionic conductivity is found to be influenced by the transport parameters. From the dielectric analysis, it was shown that the electrolytes in this system obeyed the non-Debye behavior. The A3 electrolyte exhibited a dominancy of ions ( t <subscript>ion</subscript> > t <subscript>e</subscript> ) with a breakdown voltage of 2.08 V. The fabricated electrochemical double layer capacitor (EDLC) achieved the specific capacitance values of 24.46 F/g and 39.68 F/g via the cyclic voltammetry (CV) curve and the charge-discharge profile, respectively. The other significant parameters to evaluate the performance of EDLC have been determined, such as internal resistance (186.80 to 202.27 Ω) energy density (4.46 Wh/kg), power density (500.58 to 558.57 W/kg) and efficiency (92.88%).
Details
- Language :
- English
- ISSN :
- 2077-0375
- Volume :
- 10
- Issue :
- 12
- Database :
- MEDLINE
- Journal :
- Membranes
- Publication Type :
- Academic Journal
- Accession number :
- 33276495
- Full Text :
- https://doi.org/10.3390/membranes10120389