A Polymer Blend Electrolyte Based on CS with Enhanced Ion Transport and Electrochemical Properties for Electrical Double Layer Capacitor Applications

Abstract

The fabrication of energy storage EDLC in this work is achieved with the implementation of a conducting chitosan–methylcellulose–NH4NO3–glycerol polymer electrolyte system. The simple solution cast method has been used to prepare the electrolyte. The impedance of the samples was fitted with equivalent circuits to design the circuit diagram. The parameters associated with ion transport are well studied at various plasticizer concentrations. The FTIR investigation has been done on the films to detect the interaction that occurs among plasticizer and polymer electrolyte. To get more insights into ion transport parameters, the FTIR was deconvoluted. The transport properties achieved from both impedance and FTIR are discussed in detail. It was discovered that the transport parameter findings are in good agreement with both impedance and FTIR studies. A sample with high transport properties was characterized for ion dominancy and stability through the TNM and LSV investigations. The dominancy of ions in the electrolyte verified as the tion of the electrolyte is established to be 0.933 whereas it is potentially stable up to 1.87 V. The rechargeability of the EDLC is steady up to 500 cycles. The internal resistance, energy density, and power density of the EDLC at the 1st cycle are 53 ohms, 6.97 Wh/kg, and 1941 W/kg, respectively.

Bio-Based Plasticized PVA Based Polymer Blend Electrolytes for Energy Storage EDLC Devices: Ion Transport Parameters and Electrochemical Properties

“…Wang et al [91] studied the EDLC using starch-lithium acetate system and exhibited a similar trend as in this work where ESR increased while the C s values were maintained at an approximate constant value. The specific capacitance (Cs) had been measured using the equations as reported in references [92][93][94] The specific capacitance (C s ) had been measured using the equations as reported in references [92][93][94]. The mass of activated carbon used for the calculation is 2.43 × 10 −3 g. The determined C s values are plotted in the Figure 11 for 200 cycles.…”

Polymer Composites with 0.98 Transparencies and Small Optical Energy Band Gap Using a Promising Green Methodology: Structural and Optical Properties

“…In pure PVA, -CH 2 wagging yields an absorption peak at 1410 cm −1 [ 52 ]. In the spectrum of pure PVA, a band at 2908 cm −1 occurred, due to the presence of C-H asymmetric stretching vibrations [ 53 , 54 ]. In the spectra of doped samples, the peak changes position and becomes faint, respectively.…”

“…The optical absorption spectra help determine and estimate the optical bandgap of the film. The absorption coefficient can be calculated using the following relationship based on the transmittance and reflectance results [ 54 ]: where α is the absorption coefficient, T is the transmittance, and t and R the thickness and reflectance. To determine T , Beer’s law ( T = 10 −A ) can be used.…”

High Cyclability Energy Storage Device with Optimized Hydroxyethyl Cellulose-Dextran-Based Polymer Electrolytes: Structural, Electrical and Electrochemical Investigations

“…Thus, ammonium salts are regularly reported as proton donors. The most common ammonium salts used are ammonium nitrate (NH 4 NO 3 ) [ 24 ], ammonium chloride (NH 4 Cl) [ 25 ], ammonium thiocyanate (NH 4 SCN) [ 17 ], and ammonium bromide (NH 4 Br) [ 26 ]. The highest room temperature conductivity achieved by the starch-NH 4 NO 3 electrolyte is 2.83 × 10 −5 S cm −1 [ 24 ].…”

“…The most common ammonium salts used are ammonium nitrate (NH 4 NO 3 ) [ 24 ], ammonium chloride (NH 4 Cl) [ 25 ], ammonium thiocyanate (NH 4 SCN) [ 17 ], and ammonium bromide (NH 4 Br) [ 26 ]. The highest room temperature conductivity achieved by the starch-NH 4 NO 3 electrolyte is 2.83 × 10 −5 S cm −1 [ 24 ]. A report by Hamsan et al [ 27 ] shows that Dex-NH 4 NO 3 electrolyte obtained a conductivity of 3.00 × 10 −5 S cm −1 .…”