scholarly journals Solvent Effect in Imidazole-Based Poly(Ionic Liquid) Membranes: Energy Storage and Sensing

Polymers ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 3466
Author(s):  
Arko Kesküla ◽  
Anna-Liisa Peikolainen ◽  
Paul A. Kilmartin ◽  
Rudolf Kiefer
Keyword(s):  
Energy Storage ◽  
Aqueous Electrolyte ◽  
Electrochemical Impedance ◽  
Ion Conductivity ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Resonance Spectroscopy ◽  
Sustainable Technologies ◽  
Sensor Properties ◽  
Poly Ionic Liquid

Polymerized ionic liquids (PILs) are interesting new materials in sustainable technologies for energy storage and for gas sensor devices, and they provide high ion conductivity as solid polymer electrolytes in batteries. We introduce here the effect of polar protic (aqueous) and polar aprotic (propylene carbonate, PC) electrolytes, with the same concentration of lithium bis(trifluoromethane) sulfonimide (LiTFSI) on hydrophobic PIL films. Cyclic voltammetry, scanning ionic conductance microscopy and square wave voltammetry were performed, revealing that the PIL films had better electroactivity in the aqueous electrolyte and three times higher ion conductivity was obtained from electrochemical impedance spectroscopy measurements. Their energy storage capability was investigated with chronopotentiometric measurements, and it revealed 1.6 times higher specific capacitance in the aqueous electrolyte as well as novel sensor properties regarding the applied solvents. The PIL films were characterized with scanning electron microscopy, energy dispersive X-ray, FTIR and solid state nuclear magnetic resonance spectroscopy.

scholarly journals Corn starch doped with sodium iodate as solid polymer electrolytes for energy storage applications

2021 ◽  
Vol 61 (4) ◽  
pp. 497-503
Author(s):  
Fatin Farhana Awang ◽  
Mohd Faiz Hassan ◽  
Khadijah Hilmun Kamarudin
Keyword(s):  
Energy Storage ◽  
Corn Starch ◽  
Electrochemical Impedance ◽  
Amorphous State ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Sodium Iodate ◽  
Energy Storage Devices ◽  
Casting Technique ◽  
Energy Storage Applications

The concern about environmental problems has inspired a of energy storage devices from natural sources. In this study, solid polymer electrolyte (SPE) films made from corn starch doped with different compositions of sodium iodate (NaIO3) were prepared via the solution casting technique. The effect of dopants on the structure, morphology and electrical properties of SPE films was analysed using X-Ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical impedance spectroscopy (EIS) analysis. From the XRD, it shows that the amorphous state would influence the conductivity values of SPE films. Then, the SEM observations revealed that the films seem to be rough, porous and having branch structure, which may affect the conductivity of SPE films. The maximum conductivity of SPE film is obtained from 3 wt.% of NaIO3 with a value of 1.08 × 10−4 Scm−1 at room temperature (303K). From the results, this SPE is proposed to have a great potential in future energy storage applications.

scholarly journals Salt Concentration Effect on Electrical and Dielectric Properties of Solid Polymer Electrolytes based Carboxymethyl Cellulose for Lithium-ion Batteries

2021 ◽  
Vol 12 (5) ◽  
pp. 6114-6123
Keyword(s):  
Dielectric Properties ◽  
Ionic Conductivity ◽  
Polymer Electrolytes ◽  
Carboxymethyl Cellulose ◽  
Electrochemical Impedance ◽  
Lithium Ion ◽  
Lithium Perchlorate ◽  
Linear Sweep Voltammetry ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer

Solid polymer electrolytes (SPEs) based carboxymethyl cellulose (CMC) with lithium perchlorate (LiClO4) were prepared via solution drop-cast technique. The CMC host is complexed by different concentrations of LiClO4 salt. SPEs were characterized by Electrochemical Impedance Spectroscopy (EIS) and Linear Sweep Voltammetry (LSV) in coin cells with lithium metal electrodes. EIS performed unique results based on various ionic conductivity values and dielectric properties. The higher ionic conductivity (1.32 × 10-5 S/cm) was obtained by SPEs 2 following by short-range ionic transport results based on dielectric properties depending on frequency. SPEs with LiClO4 addition are electrochemically stable over 2 V in lithium battery coin cells from LSV results.

Role of Salt Concentration Lithium Perchlorate on Ionic Conductivity and Structural of (Glycidyl Methacrylate-co-Ethyl Methacrylate) (70/30) Based on a Solid Polymer Electrolyte

2012 ◽  
Vol 626 ◽  
pp. 454-458 ◽  
Author(s):  
M. Imperiyka ◽  
Azizan Ahmad ◽  
S.A. Hanifah ◽  
Mohd Yusri Abdul Rahman
Keyword(s):  
Glycidyl Methacrylate ◽  
Fourier Transforms ◽  
Electrochemical Impedance ◽  
Epoxy Group ◽  
Lithium Perchlorate ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Casting Technique ◽  
Ethyl Methacrylate ◽  
Solution Casting Technique

A new solid polymer electrolytes (SPE) comprising copolymer of poly(glycidyl methacrylate, GMA) and (ethyl methacrylate, EMA) as polymer host and LiClO4as dopant was prepared by solution-casting technique. The copolymer was prepared by photopolymerization method and was characterized using NMR. The SPEs were characterized using electrochemical impedance spectroscopy (EIS), fourier transforms infrared (FTIR) and X-ray diffraction (XRD). The highest conductivity achieved was 4.0x10-4at 373K with highest conductivity at room temperature (2.7x10ˉ5 S cm-1at 30 wt. % of LiClO4). The active coordination site for the cation (Li+), three electrons donating functional carbonyl, ether and epoxy group of the GMA-co-EMA host have been evaluated base on their properties that were recorded in (FTIR). The structural analysis showed reduction in copolymer crystallinity phases at its highest conductivity

Effect of additive salts on ion conductivity characteristics in solid polymer electrolytes

Polymer ◽  
1992 ◽  
Vol 33 (14) ◽  
pp. 3044-3048 ◽  
Author(s):  
Norihisa Kobayashi ◽  
Shoji Sunaga ◽  
Ryo Hirohashi
Keyword(s):  
Polymer Electrolytes ◽  
Ion Conductivity ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer

Cellulose acetate–lithium bis(trifluoromethanesulfonyl)imide solid polymer electrolyte: ATR-FTIR and ionic conductivity behavior

2015 ◽  
Vol 08 (03) ◽  
pp. 1540017 ◽  
Author(s):  
Siti Masyitah Mohd Razalli ◽  
Siti Irma Yuana Sheikh Mohd Saaid ◽  
Ab Malik Marwan Ali ◽  
Oskar Hasdinor Hassan ◽  
Muhd Zu Azhan Yahya
Keyword(s):  
Ionic Conductivity ◽  
Cellulose Acetate ◽  
Polymer Electrolytes ◽  
Electrochemical Impedance ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Electrode Polarization ◽  
Ionic Conductors ◽  
Low Frequencies ◽  
Solution Cast

Solid polymer electrolytes (SPEs) based on cellulose acetate (CA) doped with lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) salt are prepared by solution cast technique. Attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy of the polymer salt complexes are recorded in the frequency range between 400 cm-1 and 4000 cm-1. The shifting of carbonyl band ( C=O ) at 1737 cm-1 to a lower wavenumber confirms the occurrence of complexation between the polymer and the salt. The electrochemical impedance spectroscopy (EIS) analysis discovered that the film with 25 wt.% of salt shows the highest ionic conductivity at room temperature. The change in real dielectric permittivity (εr) as a function of frequency at different salt concentrations which exhibits a dispersive behavior at low frequencies and decays at higher frequencies, shows the electrode polarization and space charge effect. The real modulus formalism (Mr) analysis shows that the polymer electrolytes in this work are ionic conductors.

scholarly journals Compatible Solid Polymer Electrolyte Based on Methyl Cellulose for Energy Storage Application: Structural, Electrical, and Electrochemical Properties

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2257 ◽  
Author(s):  
Shujahadeen B. Aziz ◽  
Iver Brevik ◽  
Muhamad H. Hamsan ◽  
M. A. Brza ◽  
Muaffaq M. Nofal ◽  
...  
Keyword(s):  
Energy Storage ◽  
Polymer Electrolyte ◽  
Polymer Electrolytes ◽  
Methyl Cellulose ◽  
Linear Sweep Voltammetry ◽  
Transference Number ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
High Concentration ◽  
Green Polymer

Compatible green polymer electrolytes based on methyl cellulose (MC) were prepared for energy storage electrochemical double-layer capacitor (EDLC) application. X-ray diffraction (XRD) was conducted for structural investigation. The reduction in the intensity of crystalline peaks of MC upon the addition of sodium iodide (NaI) salt discloses the growth of the amorphous area in solid polymer electrolytes (SPEs). Impedance plots show that the uppermost conducting electrolyte had a smaller bulk resistance. The highest attained direct current DC conductivity was 3.01 × 10−3 S/cm for the sample integrated with 50 wt.% of NaI. The dielectric analysis suggests that samples in this study showed non-Debye behavior. The electron transference number was found to be lower than the ion transference number, thus it can be concluded that ions are the primary charge carriers in the MC–NaI system. The addition of a relatively high concentration of salt into the MC matrix changed the ion transfer number from 0.75 to 0.93. From linear sweep voltammetry (LSV), the green polymer electrolyte in this work was actually stable up to 1.7 V. The consequence of the cyclic voltammetry (CV) plot suggests that the nature of charge storage at the electrode–electrolyte interfaces is a non-Faradaic process and specific capacitance is subjective by scan rates. The relatively high capacitance of 94.7 F/g at a sweep rate of 10 mV/s was achieved for EDLC assembly containing a MC–NaI system.

scholarly journals High sodium ionic conductivity in PEO/PVP solid polymer electrolytes with InAs nanowire fillers

2021 ◽  
Author(s):  
Chandni Devi ◽  
Jnaneswari Gellanki ◽  
Håkan Pettersson ◽  
Sandeep Kumar
Keyword(s):  
Energy Storage ◽  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Polymer Electrolytes ◽  
Solid Polymer Electrolyte ◽  
Low Cost ◽  
Solid Polymer Electrolytes ◽  
Sodium Ion ◽  
Solid Polymer ◽  
Significant Advance

Abstract Solid-state sodium ion batteries are frequently referred to as the most promising technology for future energy storage applications. However, developing a solid electrolyte with high ionic conductivity and a wide electrochemical stability window, remains a major challenge. Although solid-polymer electrolytes have attracted great interest due to their low cost, low density and very good processability, they generally have significantly lower ionic conductivity and poor mechanical strength. Here, we report on the development of a low-cost solid polymer electrolyte comprised of poly(ethylene oxide), poly(vinylpyrrolidone) and sodium hexafluorophosphate, mixed with indium arsenide nanowires. We show that the addition of 1.0 percent by weight of nanowires increases the sodium ion conductivity in the polymer to 1.50 × 10-4 Scm−1 at 40° C. This is the highest reported conductivity for any solid polymer electrolyte to date. In order to explain this remarkable characteristic, we propose a new transport model where sodium ions hop between close-spaced defect sites present on the surface of the nanowires, forming an effective complex conductive percolation network. Our work represents a significant advance in the development of novel solid polymer electrolytes with embedded ultrafast 1D percolation networks for next generations of low-cost, high-performance batteries with excellent energy storage capabilities.

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