scholarly journals Resorcinol-Formaldehyde (RF) as a Novel Plasticizer for Starch-Based Solid Biopolymer Electrolyte

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2170
Author(s):  
Vidhya Selvanathan ◽  
Mohd Hafidz Ruslan ◽  
Mohammod Aminuzzaman ◽  
Ghulam Muhammad ◽  
N. Amin ◽  
...  
Keyword(s):  
Polymer Electrolyte Membrane ◽  
Amorphous Region ◽  
Lithium Triflate ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Resorcinol Formaldehyde ◽  
Casting Technique ◽  
Electrolyte Membrane ◽  
Solution Casting Technique ◽  
Biopolymer Electrolyte

A starch-resorcinol-formaldehyde (RF)-lithium triflate (LiTf) based biodegradable polymer electrolyte membrane was synthesized via the solution casting technique. The formation of RF crosslinks in the starch matrix was found to repress the starch’s crystallinity as indicated by the XRD data. Incorporation of the RF plasticizer improved the conductivity greatly, with the highest room-temperature conductivity recorded being 4.29 × 10−4 S cm−1 achieved by the starch:LiTf:RF (20 wt.%:20 wt.%:60 wt.%) composition. The enhancement in ionic conductivity was an implication of the increase in the polymeric amorphous region concurrent with the suppression of the starch’s crystallinity. Chemical complexation between the plasticizer, starch, and lithium salt components in the electrolyte was confirmed by FTIR spectra.

Conductivity and Dielectric Studies of Methylcellulose/Chitosan-NH4CF3SO3 Polymer Electrolyte

2013 ◽  
Vol 594-595 ◽  
pp. 818-822 ◽  
Author(s):  
K.Z. Hamdan ◽  
A.S.A. Khiar
Keyword(s):  
Room Temperature ◽  
Methyl Cellulose ◽  
Solution Casting ◽  
Dielectric Studies ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Casting Technique ◽  
Dielectric Data ◽  
Solution Casting Technique ◽  
Chitosan Blends

Films of methyl cellulose (MC) /chitosan blends were prepared via solution casting technique and their properties with different amount of ammonium trilate, NH4CF3SO3 were compared. Measurements of conductivity as a function of frequency at room temperature on these films were carried out using HIOKI 3532-50 LCR Hi-Tester where the frequency was set between 50 Hz to 1 MHz. Samples having 40 wt% of NH4CF3SO3 exhibit the highest room temperature conductivity of (4.99±4.18) x 10-6 Scm-1. Dielectric data were analyzed using complex permittivity and complex electrical modulus for the sample with the highest ionic conductivity.

Electrochemical Stability of High Conducting PAN-Based Electrolytes for Lithium Ion Polymer Cells

2014 ◽  
Vol 1024 ◽  
pp. 335-338
Author(s):  
Woon Gie Chong ◽  
Khairul Bahiyah Md Isa ◽  
Lisani Othman ◽  
Nurul Husna Zainol ◽  
Siti Mariam Samin ◽  
...  
Keyword(s):  
Ethylene Carbonate ◽  
Lithium Ion ◽  
Linear Sweep Voltammetry ◽  
Electrochemical Stability ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Casting Technique ◽  
Solution Casting Technique ◽  
Charge Concentration ◽  
Lithium Tetrafluoroborate

Polyacrylonitrile (PAN) based polymer electrolytes composed of PAN, lithium tetrafluoroborate (LiBF4), ethylene carbonate (EC) and dimethyl phthalate (DMP) were prepared by solution casting technique. The variation of conductivity with LiBF4 concentrations of the prepared films has been studied using AC impedance spectroscopy. The conductivity of the films is charge concentration dependent and the highest room temperature conductivity of 1.08 ×10-2 S cm-1 is achieved for the film with optimum composition. The thermal activated conductivity of the films obeys Arrhenius rule in the temperature range from 303 K to 353 K. The electrochemical stability of the PAN-based films has been investigated using linear sweep voltammetry (LSV) with three electrodes system. The films were found to be electrochemically stable up to 4.4 V. The reversibility of the lithium ions conduction in the polymer electrolyte films have been studied using cyclic voltammetry (CV).

Investigation on the Effect of TiO2 Nanofiller to the Structural and Conductivity Characteristics of Poly(vinylidene fluoride-co-hexafluoropropylene)/Poly(ethyl methacrylate) Based Polymer Electrolytes System

2013 ◽  
Vol 594-595 ◽  
pp. 604-607
Author(s):  
Siti Rudhziah ◽  
N.S. Mohamed
Keyword(s):  
Polymer Electrolytes ◽  
Vinylidene Fluoride ◽  
Scanning Calorimetry ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Casting Technique ◽  
Ethyl Methacrylate ◽  
Nanocomposite Polymer ◽  
Poly Vinylidene Fluoride ◽  
Solution Casting Technique

In this study, Poly (vinylidene fluoride-co-hexafluoropropylene)/Poly (ethyl methacrylate (PEMA) nanocomposite polymer electrolytes was prepared by solution casting technique. The effects of TiO2 nanofiller on the structural, thermal and conductivity characteristics were examined using x-ray diffraction, scanning electron microscopy, differential scanning calorimetry and impedance spectroscopy. The crystallinity and conductivity of the salted system are found to increase with the addition of TiO2. The system containing 5 wt % of TiO2 exhibited the highest room temperature conductivity of 1.32 × 10-3 S cm-1.

Electrical Property of Methylcellulose/Chitosan-NH4NO3-EC Plasticized Polymer Electrolyte

2015 ◽  
Vol 719-720 ◽  
pp. 82-86 ◽  
Author(s):  
N.L.M. Zazuli ◽  
A.S.A. Khiar
Keyword(s):  
Electrical Property ◽  
Polymer Electrolytes ◽  
Room Temperature ◽  
Ethylene Carbonate ◽  
Solution Casting ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Casting Technique ◽  
Dielectric Data ◽  
Solution Casting Technique

Polymer electrolytes blends of methylcellulose (MC)/chitosan-ammonium triflate (NH4CF3SO3) plasticized with Ethylene Carbonate (EC) were prepared by solution-casting technique. The effect on electrical property was investigated by impedance spectroscopy. Sample with 45 wt% of EC exhibit the highest room temperature conductivity of 2.16 × 10-4 Scm-1. Dielectric data were analyzed for the sample with the highest conductivity.

Investigation of Ionic Conduction and Morphological Properties of PMMA-Based Polymer Electrolytes Containing Lithium Iodide

2012 ◽  
Vol 545 ◽  
pp. 264-268
Author(s):  
Nurul Rozullyah Zulkepely ◽  
Siti Rohana Majid ◽  
Zurina Osman
Keyword(s):  
Room Temperature ◽  
Inorganic Salt ◽  
Ionic Conduction ◽  
Ethylene Carbonate ◽  
Morphological Properties ◽  
Lithium Iodide ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Casting Technique ◽  
Solution Casting Technique

In this study, the two systems of polymethylmethacrylate (PMMA) based polymer electrolyte films have been prepared by the solution casting technique. Lithium iodide (LiI) and ethylene carbonate (EC) were used as inorganic salt and plasticizer, respectively. The highest room temperature conductivity for the plasticized system and unplasticized system is 4.42 x 10-5Scm-1and 4.37 x 10-6Scm-1, respectively. The conductivity-temperature dependence studies have been performed on these films in the temperature range of 303 K to 373 K. It can be observed that the logσversus 1000/T plots obey the Arrhenius rule and VTF rule for the plasticized film and unplasticized film, respectively [1-3]. The surface morphology of the plasticized and unplasticized films was observed by using scanning electron microscope (SEM).

Sol-Gel Synthesis and Characterizations of LiCF3SO3-CeO2 Solid Composite Electrolytes

2010 ◽  
Vol 129-131 ◽  
pp. 506-510 ◽  
Author(s):  
N.A. Dzulkurnain ◽  
N.S. Mohamed
Keyword(s):  
Sol Gel ◽  
Morphological Properties ◽  
X Ray Diffraction ◽  
Lithium Triflate ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
X Ray ◽  
Composite Solid Electrolyte ◽  
Sol Gel Synthesis ◽  
Composite Solid

Composite solid electrolyte systems composed of different compositions of lithium triflate (LiCF3SO3) as host, and cerium oxide (CeO2) as dispersoid were prepared using sol-gel method. The electrical, structural and morphological properties of the composite solid electrolytes were investigated using impedance spectroscopy (IS), X-Ray Diffraction (XRD) and Field Emission Scanning Electron Microscopy (FESEM). Maximum room temperature conductivity was obtained for the system of 60 mol % LiCF3SO3 – 40 mol % CeO2.

Morphology and Electrical Characteristics of (PEO)10LiClO4 Electrolyte with Nanosized CeO2

2011 ◽  
Vol 224 ◽  
pp. 65-69
Author(s):  
De Jiang Qi ◽  
Xiao Hong Yang ◽  
Xiao Guo Bi ◽  
Hong Qiang Ru
Keyword(s):  
Ionic Conductivity ◽  
Lithium Ion ◽  
Rare Earth Oxide ◽  
Amorphous Region ◽  
Chain Structure ◽  
Filler Concentration ◽  
Composite Polymer Electrolyte ◽  
Electrical Characteristics ◽  
Casting Technique ◽  
Solution Casting Technique

In the present work, using nanosized rare earth oxide CeO2 as filler and acetonitrile as organic solvent, a novel solid-state composite polymer electrolyte (CPE) films (PEO)10LiClO4-x wt.%CeO2 (x=0,2,6,9,12,15) was prepared by solution-casting technique. The effect of CeO2 filler concentration on morphology and electrical characteristics of CPE films has been investigated and analyzed. The AC impedance measurements show that the ionic conductivity of CPE can be efficiently enhanced by adding appropriate CeO2. The highest room temperature (25OC) ionic conductivity of 1.71×10-5S•cm-1 is achieved with the CeO2 content of 9 wt.%. With the CeO2 content continues to increase, CPE ionic conductivity begin to decline. This is because appropriate CeO2 can disorder the chain structure and effectively inhibit the crystallization of PEO, which expands the amorphous region required for the lithium-ion transport.

scholarly journals Preparation and Characterization of Ultraviolet-cured Polymer Electrolyte Poly(glycidyl methacrylate-co-methyl methacrylate)

2014 ◽  
Vol 17 (4) ◽  
pp. 213-217
Author(s):  
M. Imperiyka ◽  
A. Ahmad ◽  
S. A. Hanifah ◽  
M. Y.A. Rahman ◽  
N. S. Mohamed
Keyword(s):  
Methyl Methacrylate ◽  
Polymer Electrolyte ◽  
Glycidyl Methacrylate ◽  
Room Temperature ◽  
Lithium Ion ◽  
Solid Polymer ◽  
Lithium Triflate ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Exponential Factor

Effect of lithium triflate (LiTf) concentration on the properties of poly (glycidyl methacrylate-co-methyl methacrylate) P(GMAco-MMA)-based solid polymer electrolyte was investigated. The copolymer of (GMA-co-MMA) was synthesized by photopolymerization method. P(GMA–MMA) was fixed at the ratio of 90:10 based on the conductivity result of the electrolyte film. The electrolyte samples were characterized using impedance spectroscopy (EIS), cyclic voltammetry (CV) and thermogravimetric analysis (TGA). The room temperature conductivity was improved about six orders upon the addition of 30 wt. % LiTf salt into the polymer host. The highest room temperature conductivity was 1.4×10-6 S cm-1 at 30 wt. % LiTf. The highest conductivity of 1.25×10-4 S cm-1 was achieved at 393 K. The polymer electrolyte system exhibits Arrhenius-like behavior with the pre-exponential factor of 1.25×10-4 S cm-1 and activation energy of 0.39 eV. The electrolyte showed electrochemical stability window up to 3 V. The thermal stability increases with the salt concentration. The above results indicate that the electrolyte has potential for lithium ion battery application.

Improved ionic conductivity in guar gum succinate–based polymer electrolyte membrane

2018 ◽  
Vol 30 (8) ◽  
pp. 993-1001 ◽  
Author(s):  
Ahmad Danial Azzahari ◽  
Nur Fazilah Abdul Mutalib ◽  
Muhammad Rizwan ◽  
Cheyma Naceur Abouloula ◽  
Vidhya Selvanathan ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Guar Gum ◽  
Polymer Electrolyte Membrane ◽  
Ethylene Carbonate ◽  
Cost Effective ◽  
Solid Polymer ◽  
Lithium Triflate ◽  
Electrolyte Membrane ◽  
Chemically Modified ◽  
Ester Linkage

Guar gum succinate (GGS) was chemically modified by reacting guar gum with succinic anhydride in the presence of 4-dimethylaminopyridine. Succination was confirmed by Fourier transform infrared (FTIR) spectroscopy with carbonyl bands at 1724 cm−1 and ester linkage at 1567 cm−1 of the succinate group. The resulting amorphous, GGS was used as a polymer host to prepare cost-effective solid polymer electrolyte (SPE) films via incorporating a blend of ethylene carbonate (EC), carboxymethyl cellulose (CMC), lithium triflate (LiTf) and lithium iodide (LiI). SPE system for GGS:EC (1.0:0.6) with 30 wt% LiTf showed highest conductivity of 6.29 × 10−5 S cm−1 and GGS:CMC:EC (0.5:0.5:0.6) with 25 wt% LiI showed highest conductivity of 2.10 × 10−4 S cm−1. FTIR revealed multiple complexation sites for ion mobility indicating that GGS possesses high prospects as a conductive SPE.

Study on Electrical Conduction Properties of Plasticized CMC-DTAB Based Solid Biopolymer Electrolytes

2021 ◽  
Vol 1025 ◽  
pp. 15-19
Author(s):  
Nor Fatihah Mazuki ◽  
Pramod Kumar Singh ◽  
Ahmad Salihin Samsudin
Keyword(s):  
Ionic Conductivity ◽  
Electrical Conduction ◽  
Ethylene Carbonate ◽  
Electrical Impedance Spectroscopy ◽  
Ammonium Bromide ◽  
Weight Percentage ◽  
Casting Technique ◽  
Solution Casting Technique ◽  
Biopolymer Electrolyte ◽  
Conduction Properties

This work focuses on the electrical properties study of solid biopolymer electrolyte (SBE) based plasticized carboxy methylcellulose (CMC) doped dodecyltrimethyl ammonium bromide (DTAB). Different weight percentage of ethylene carbonate (EC) which acts as plasticizer was incorporated into SBE system and were successfully prepared via solution casting technique. The conduction properties of SBE was investigated by using electrical impedance spectroscopy (EIS). The incorporation of 10 wt.% EC was found to achieve the highest ionic conductivity with 1.00 10-3 S cm-1 at room temperature. All SBE samples shows the ionic conductivity increased proportionally with temperature thus obeys to Arrhenius behaviour with regression value almost close to unity (R2~1). The electrical conduction behaviour of the CMC-DTAB-EC SBE reveals non-Debye behaviour without single relaxation properties.

Sign in / Sign up

Export Citation Format

Share Document