Proton Conducting Polymer Electrolytes for Possible Application In Electrochromic Display Devices

1988 ◽  
Vol 135 ◽  
Author(s):  
R.P. Singh ◽  
P.N. Gupta ◽  
S.L. Agrawal ◽  
U.P. Singh
Keyword(s):  
Electrical Conductivity ◽  
Polymer Electrolytes ◽  
Transference Number ◽  
Time Measurement ◽  
Protonic Conductivity ◽  
Similar Magnitude ◽  
Proton Conductance ◽  
Display Devices ◽  
Ionic Transference Number ◽  
Electrochromic Cell

AbstractProton conduction in polymer composites of PVA+H3PO4 AND PVA+H2SO4 have been investigated. The films protonated by H3PO4 show protonic conductivity between 10−6to 10−3ohm−1cm−1 depending upon the relative ratios and temperature. H2SO4 protonated PVA films also show proton conductance of almost similar magnitude. The ionic transference number has been estimated to be 0.95 for H3PO4 protonated PVA film of ratio 70:30. The frequency and temperature dependence of electrical conductivity has also been carried out. These polymer films have been used to fabricate an electrochromic cell. The colorationtime determined from response time measurement for the system “SnO2|Glass|WO3 film|PVA film|SnO2 Glass” is 2.6 sec for H3PO4 doped films and 6 seconds for H2SO4 doped films.

Ionic Conductivity, Morphology and Transport Number of Lithium Ions in PMMA Based Gel Polymer Electrolytes

2013 ◽  
Vol 334-335 ◽  
pp. 137-142 ◽  
Author(s):  
Lisani Othman ◽  
Khairul Bahiyah Md. Isa ◽  
Zurina Osman ◽  
Rosiyah Yahya
Keyword(s):  
Ionic Conductivity ◽  
Salt Concentration ◽  
Polymer Electrolytes ◽  
Ethylene Carbonate ◽  
Transference Number ◽  
Gel Polymer Electrolytes ◽  
Casting Technique ◽  
Ionic Transference Number ◽  
Temperature Dependence Of Conductivity ◽  
Solution Casting Technique

The gel polymer electrolytes (GPEs) composed of polymethylmethacrylate (PMMA) with lithium trifluoromethanesulfonate (LiCF3SO3) salt dissolved in a binary mixture of ethylene carbonate (EC) and propylene carbonate (PC) organic solvents have been prepared by the solution casting technique. The samples are prepared by varying the salt concentrations from 5 wt.% to 30 wt.%. Impedance spectroscopy measurement has been carried out to determine the ionic conductivity of the samples. The sample containing 25 wt.% of LiCF3SO3salt exhibits the highest room temperature ionic conductivity of 2.56 x 10-3S cm-1. The conductivity of the GPEs has been found to depend on the salt concentration added to the sample, while at higher salt concentration reveals a decrease in the ionic conductivity due to ions association. The temperature dependence of conductivity from 303 K to 373 K is found to obey the Arrhenius law. The ionic transference number,tiof GPEs has been estimated by the DC polarization method and the value is found to be 0.98, 0.93, and 0.97 for the sample containing 25 wt.%, 5 wt.% and 30 wt.% respectively. This result is consistent with the conductivity studies.

Ionic Conductivity, Morphology and Transference Number of Sodium Ion in PMMA Based Gel Polymer Electrolytes

2013 ◽  
Vol 594-595 ◽  
pp. 696-701 ◽  
Author(s):  
Lisani Othman ◽  
Khairul Bahiyah Md. Isa ◽  
Woon Gie Chong ◽  
Nurul Husna Zainol ◽  
Siti Mariam Samin ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Salt Concentration ◽  
Polymer Electrolytes ◽  
Ethylene Carbonate ◽  
Transference Number ◽  
Gel Polymer Electrolytes ◽  
Casting Technique ◽  
Ionic Transference Number ◽  
Temperature Dependence Of Conductivity ◽  
Sodium Trifluoromethanesulfonate

The gel polymer electrolytes (GPEs) composed of polymethylmethacrylate (PMMA) with sodium trifluoromethanesulfonate (NaCF3SO3) salt dissolved in a binary mixture of ethylene carbonate (EC) and propylene carbonate (PC) organic solvents have been prepared by solution casting technique. The samples are prepared by varying the salt concentrations from 5 wt.% to 30 wt.%. Impedance spectroscopy measurement has been carried out to determine the ionic conductivity of the GPE samples. The sample containing 20 wt.% of NaCF3SO3salt exhibits the highest room temperature ionic conductivity of 3.10 x 10-3S cm-1. The conductivity of the GPEs has been found to depend on the salt concentration added to the sample though at higher salt concentration reveals decreasing in ionic conductivity due to ions association. The temperature dependence of conductivity from 303 K to 373 K is found to obey the Arrhenius rule. The ionic transference number, ti of GPEs has been estimated by DC polarization method and the value is found to be 0.95, 0.99, and 0.97 for the sample containing 5 wt.%, 20 wt.% and 30 wt.% respectively. This result is consistent with the conductivity studies.

scholarly journals Conductivity Studies of Epoxidized PMMA Grafted Natural Rubber Doped Lithium Triflate Gel Polymer Electrolytes

2019 ◽  
Vol 7 (4.14) ◽  
pp. 502
Author(s):  
Khuzaimah Nazir ◽  
Mohamad Fariz Mohamad Taib ◽  
Rosnah Zakaria ◽  
Muhamad Kamil Yaakob ◽  
Oskar Hasdinor Hassan ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Polymer Electrolytes ◽  
Ethylene Carbonate ◽  
Transference Number ◽  
Gel Polymer Electrolytes ◽  
Lithium Triflate ◽  
Casting Technique ◽  
Ionic Transference Number ◽  
Conductor Surface ◽  
Solution Casting Technique

A gel polymer electrolytes (GPEs) comprising of 62.3 mol% of epoxidized-30% poly(methyl methacrylate) grafted natural rubber (EMG30) as a polymer host, LiCF3SO3 as a dopant salt and ethylene carbonate (EC) as a plasticizer was prepared by solution-casting technique. The effect of plasticizer on the EMG30- LiCF3SO3 on the ionic conductivity is explained in terms of the plasticizer loading of the film. The temperature dependence of the conductivity of the polymer films obeys the Vogel-Tamman-Fulcher (VTF) relationship. The ionic transference number is calculated using Wagner’s polarization technique shows that the conducting species are predominantly due ions and hence showed the system is an ionic conductor. Surface morphological analysis showed the sample with the highest conductivity exhibited most homogenous in nature.  

Studies of Poly(Ethyl Methacrylate) Complexed with Ammonium Trifluoromethanesulfonate

2012 ◽  
Vol 501 ◽  
pp. 19-23 ◽  
Author(s):  
Norwati Khairyl Anuar ◽  
Norazlin Zainal ◽  
Mohamed Nor Sabirin ◽  
Ri Hanum Yahaya Subban
Keyword(s):  
Polymer Electrolytes ◽  
Salt Content ◽  
Transference Number ◽  
X Ray Diffraction ◽  
Free Standing ◽  
Ethyl Methacrylate ◽  
Ionic Transference Number ◽  
Temperature Dependence Of Conductivity ◽  
Structural And Electrical Properties ◽  
Mobile Ions

Free standing polymer electrolyte films comprising of ammonium trifluoromethane sulfonate in poly(ethyl methacrylate) were prepared and characterized. The structural and electrical properties of the polymer electrolytes were investigated by X-ray diffraction and a.c. impedance spectroscopy, respectively. The formation of polymer-salt complex has been confirmed by Fourier transform infrared spectroscopy study. Conductivity of the polymer electrolytes increased with salt content. The highest ionic conductivity in the order of 10-5 S cm-1 at room temperature was achieved for the system with 35 wt% of ammonium salt. The temperature dependence of conductivity obeyed the Vogel-Tammam-Fulcher relation. The activation energy has been calculated from the VTF formalism. The ionic transference number of the mobile ions estimated by Wagner’s polarization method was close to unity for the highest conducting sample implying that the conductivity was contributed by ions which was expected to be protons.

scholarly journals Structural, Electrical and Electrochemical Properties of Glycerolized Biopolymers Based on Chitosan (CS): Methylcellulose (MC) for Energy Storage Application

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1183
Author(s):  
Shujahadeen B. Aziz ◽  
Ahmad S. F. M. Asnawi ◽  
Mohd Fakhrul Zamani Kadir ◽  
Saad M. Alshehri ◽  
Tansir Ahamad ◽  
...  
Keyword(s):  
Energy Storage ◽  
Ion Transport ◽  
Ammonium Thiocyanate ◽  
Transference Number ◽  
Ionic Mobility ◽  
Transport Parameters ◽  
Ionic Transference Number ◽  
Energy Storage Application ◽  
Electrochemical Double Layer ◽  
Ion Conducting

In this work, a pair of biopolymer materials has been used to prepare high ion-conducting electrolytes for energy storage application (ESA). The chitosan:methylcellulose (CS:MC) blend was selected as a host for the ammonium thiocyanate NH4SCN dopant salt. Three different concentrations of glycerol was successfully incorporated as a plasticizer into the CS–MC–NH4SCN electrolyte system. The structural, electrical, and ion transport properties were investigated. The highest conductivity of 2.29 × 10−4 S cm−1 is recorded for the electrolyte incorporated 42 wt.% of plasticizer. The complexation and interaction of polymer electrolyte components are studied using the FTIR spectra. The deconvolution (DVN) of FTIR peaks as a sensitive method was used to calculate ion transport parameters. The percentage of free ions is found to influence the transport parameters of number density (n), ionic mobility (µ), and diffusion coefficient (D). All electrolytes in this work obey the non-Debye behavior. The highest conductivity electrolyte exhibits the dominancy of ions, where the ionic transference number, tion value of (0.976) is near to infinity with a voltage of breakdown of 2.11 V. The fabricated electrochemical double-layer capacitor (EDLC) achieves the highest specific capacitance, Cs of 98.08 F/g at 10 mV/s by using the cyclic voltammetry (CV) technique.

Electronic/Ionic Conductivity and Oxygen Diffusion Coefficient af the Sr-Fe-Co-O System

1995 ◽  
Vol 393 ◽  
Author(s):  
B. Ma ◽  
J.-H. Park ◽  
C. U. Segre ◽  
U. Balachandran
Keyword(s):  
Diffusion Coefficient ◽  
Ionic Conductivity ◽  
Oxygen Diffusion ◽  
Ionic Conductivities ◽  
Transference Number ◽  
Transference Numbers ◽  
Oxygen Diffusion Coefficient ◽  
Ionic Transference Number ◽  
Local Fitting ◽  
Oxide Ion

ABSTRACTOxides in the Sr-Fe-Co-O system exhibit both electronic and ionic conductivities. Recently, the Sr-Fe-Co-O system attracted great attention because of its potential to be used for oxygen-permeable membranes that can operate without electrodes or external electrical circuitry. Electronic and ionic conductivities of two compositions of the Sr-Fe-Co-O system, named SFC-1 and SFC-2, have been measured at various temperatures. The electronic transference number is much greater than the ionic transference number in SFC-1, whereas the electronic and ionic transference numbers are very similar in SFC-2. At 800°C, the electronic and ionic conductivities are ≈76 and ≈4 S•cm−1, respectively, for SFC-1; whereas, for SFC-2, the electronic and ionic conductivities are ≈10 and ∼1 S•cm−1, respectively. By performing a local fitting to the equation σ • T = Aexp(-Ea / kT), we found that the oxide ion activation energies are 0.92 and 0.37 eV, respectively, for SFC-1 and SFC-2. The oxygen diffusion coefficient of SFC-2 is ≈ 9 x 10−7cm2/sec at 900°C.

scholarly journals A single cation or anion dendrimer-based liquid electrolyte

2016 ◽  
Vol 7 (5) ◽  
pp. 3390-3398 ◽  
Author(s):  
Sudeshna Sen ◽  
Rudresha B. Jayappa ◽  
Haijin Zhu ◽  
Maria Forsyth ◽  
Aninda J. Bhattacharyya
Keyword(s):  
Ion Transport ◽  
Transference Number ◽  
Liquid Electrolyte ◽  
Ion Conductor ◽  
Ionic Transference Number ◽  
Anion Diffusion

The proposed dendrimer based liquid electrolyte is a single-ion conductor where ion transport is altered by the nature of the chemical functionalities leading to large variations in anion diffusion and hence ionic transference number.

Immobilized cation functional gel polymer electrolytes with high lithium transference number for lithium ion batteries

2019 ◽  
Vol 572 ◽  
pp. 382-389 ◽  
Author(s):  
Chih-Hao Tsao ◽  
Hou-Ming Su ◽  
Hsiang-Ting Huang ◽  
Ping-Lin Kuo ◽  
Hsisheng Teng
Keyword(s):  
Lithium Ion Batteries ◽  
Polymer Electrolytes ◽  
Lithium Ion ◽  
Transference Number ◽  
Gel Polymer Electrolytes
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