scholarly journals Nano-Pr2O3 Doped PVA + Na3C6H5O7 Polymer Electrolyte Films for Electrochemical Cell Applications

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
J. Ramesh Babu ◽  
K. Ravindhranath ◽  
K. Vijaya Kumar
Keyword(s):  
Room Temperature ◽  
Sodium Citrate ◽  
Amorphous Region ◽  
Open Circuit ◽  
Charge Carriers ◽  
Electrochemical Cells ◽  
Solid State Battery ◽  
Solution Cast ◽  
Ion Movements ◽  
Cast Technique

Varying concentrations of nano-Pr2O3 doped in “PVA + Sodium Citrate (90 : 10)” polyelectrolyte films are synthesized using solution cast technique and the films are characterized adopting FTIR, XRD, SEM, and DSC methods. The film with 3.0% of nano-Pr2O3 content is more homogenous and possesses more amorphous region that facilitate the deeper penetration of nanoparticles into the film causing more interactions between the functional groups of the polymeric film and nano-Pr2O3 particles and thereby turning the film more friendlily to the proton conductivity. The conductivity is maximum of 7 × 10−4 S/cm at room temperature for 3.0% nano-Pr2O3 film and at that composition, the activation energy and crystallinity are low. With increase in temperature, the conductivity is increasing and it is attributed to the hopping of interchain and intrachain ion movements and furthermore decrease in microscopic viscosity of the films. The major charge carriers are ions and not electrons. These films are incorporated successfully as polyelectrolytes in electrochemical cells which are evaluated for their discharge characteristics. It is found that the discharge time is maximum of 140 hrs with open circuit voltage of 1.78 V for film containing 3% of nano-Pr2O3 and this reflects its adoptability in the solid-state battery applications.

scholarly journals Preparation and Characterization of Nano-Dy2O3-Doped PVA + Na3C6H5O7 Polymer Electrolyte Films for Battery Applications

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
J. Ramesh Babu ◽  
K. Ravindhranath ◽  
K. Vijaya Kumar
Keyword(s):  
Polymer Electrolyte ◽  
Transference Number ◽  
Open Circuit ◽  
Composite Polymer Electrolyte ◽  
Electrochemical Cells ◽  
Dsc Studies ◽  
A Value ◽  
The Matrix ◽  
Solution Cast ◽  
Ion Movements

Composite polymer electrolyte films containing various concentrations of nano-Dy2O3 (1.0 to 4.0%) in PVA + sodium citrate (90 : 10) are synthesized adopting solution cast method and are characterized using FTIR, XRD, SEM, and DSC techniques. The investigations indicate that all components are homogenously dispersed. Films containing 3% of nano-Dy2O3 are more homogenous and less crystalline, and the same is supported by DSC studies indicating the friendly nature to ionic conductivity. Transference number studies reveal that the major charge carriers are ions. With the increase in % of nano-Dy2O3, the conductivity increases and reaches maximum in 3% film with a value of 1.06 × 10−4 S/cm (at 303 K). Further, the conductivity of the film increases with raise in temperature due to the hopping of interchain and intrachain ion movements and fall in microscopic viscosity at the matrix interface of the film. Electrochemical cells are fabricated using these films with the configuration “anode (Mg + MgSO4)/[PVA (90%) + Na3C6H5O7 (10%) + (1–4% nano-Dy2O3)]/cathode (I2 + C + electrolyte),” and various discharge characteristics are evaluated. With 3% nano-Dy2O3 film, the maximum discharge time of 118 hrs with open-circuit voltage of 2.68 V, power density of 0.91 W/kg, and energy density of 107.5 Wh/kg are observed. These findings reflect the successful adoption of the developed polymer electrolyte films in electrochemical cells.

Transport Properties of Chitosan/Peo Blend Based Proton Conducting Polymer Electrolyte

2012 ◽  
Vol 488-489 ◽  
pp. 114-117 ◽  
Author(s):  
M.F. Shukur ◽  
M.F.Z. Kadir ◽  
Z. Ahmad ◽  
R. Ithnin
Keyword(s):  
Activation Energy ◽  
Ionic Conduction ◽  
Charge Carriers ◽  
Number Density ◽  
Model Sample ◽  
Mobility Of Charge Carriers ◽  
Solution Cast ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Cast Technique

The polymer electrolytes were prepared using the solution cast technique. The polymer host consisted of chitosan and poly(ethylene oxide) (PEO). Ammonium nitrate (NH4NO3) was added to the blend solution to provide the charge carriers for ionic conduction. The sample containing 40 wt.% NH4NO3 exhibited a conductivity value of 5.83 × 10-4 S cm-1 at 373 K. Conductivity-temperature relationship for all samples obeyed Arrhenius rule and the activation energy of each samples were obtained. The sample containing 40 wt.% NH4NO3 showed the lowest activation energy at 0.29 eV. The conductivity variation for the prepared electrolyte system was explained using the Rice and Roth model. Sample with 40 wt. % NH4NO3 exhibited the highest number density and mobility of charge carriers with values of 1.39 × 1020 cm-3 and 4.60 × 10-6 cm2 V-1 s-1 respectively. The increase in conductivity was attributed to the increase in the number density and mobility of charge carriers.

Structural Study of Plasticized Carboxy Methylcellulose Based Solid Biopolymer Electrolyte

2015 ◽  
Vol 1107 ◽  
pp. 242-246 ◽  
Author(s):  
M.N. Chai ◽  
M.I.N. Isa
Keyword(s):  
Solid Polymer Electrolyte ◽  
Room Temperature ◽  
Solid Polymer ◽  
Biopolymer Electrolytes ◽  
Infrared Studies ◽  
Solution Cast ◽  
Biopolymer Electrolyte ◽  
Relationship Of ◽  
Carboxyl Methylcellulose ◽  
Cast Technique

Carboxyl methylcellulose (CMC) doped with oleic acid (OA) and plasticized with glycerol was able to be produced into solid biopolymer electrolytes using the solution cast technique. The CMC-OA-glycerol solid polymer electrolyte obtained the highest conductivity of 1.64 x 10-4 S cm-1 at room temperature for sample Gly 40 wt. %. Within the temperature range investigated, the conductivity– temperature relationship of the biopolymer electrolytes is characteristically Arrhenius behaviour, suggesting that the conductivity is thermally assisted. Fourier Transform Infrared studies was carried out to determine the dissociation of free protons (H+) from the carboxyl group (–COOH) of glycerol.

Ionic Conductivity of PVC-NH4I-EC Proton Conducting Polymer Electrolytes

2012 ◽  
Vol 545 ◽  
pp. 312-316 ◽  
Author(s):  
Siti Khatijah Deraman ◽  
Ri Hanum Yahaya Subban ◽  
Mohamed Nor Sabirin
Keyword(s):  
Fourier Transform ◽  
Polymer Electrolytes ◽  
Room Temperature ◽  
Ethylene Carbonate ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Poly Vinyl Chloride ◽  
Solution Cast ◽  
Conductivity Behavior ◽  
Cast Technique

Poly(vinyl) chloride (PVC)-NH4I-EC films have been prepared by solution cast technique. The sample containing 30 wt. % NH4I exhibited highest room temperature conductivity of 4.60 × 10-7S cm-1. The conductivity increased to 1.08 × 10-6Scm-1when 15 wt. % of ethylene carbonate (EC) was added to 70 wt. % PVC - 30 wt. % NH4I. Fourier Transform Infrared (FTIR) showed evidence of polymer–salt complexation while DSC showed increase in glass transition temperature (Tg) of PVC -NH4I - EC polymer electrolytes. The conductivity behavior of the studied system could be accounted by the changes in Tgvalues.

Ionic Conductivity and Dielectric Properties of Plasticized Polyacrylonitrile Based Solid Polymer Electrolyte Films

2012 ◽  
Vol 626 ◽  
pp. 211-214
Author(s):  
W.G. Chong ◽  
Zurina Osman ◽  
Lisani Othman ◽  
Khairul Bahiyah Md. Isa
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Solid Polymer Electrolyte ◽  
Room Temperature ◽  
Ethylene Carbonate ◽  
Solid Polymer ◽  
Arrhenius Relation ◽  
Solution Cast ◽  
Host Polymer ◽  
Cast Technique

The conducting polymer electrolyte films composed of polyacrylonitrile (PAN) as the host polymer, LiCF3SO3 and NaCF3SO3 as inorganic salts and ethylene carbonate (EC) as plasticizer were prepared by the solution cast technique. The conductivities of the films were characterized by impedance spectroscopy. On addition of more than 14 wt% of salt, the NaCF3SO3-containing PAN films exhibited higher ionic conductivity than the LiCF3SO3-containing PAN films. The values of the dielectric constant, εr and dielectric loss, εi increase as frequency decreases at room temperature. The temperature dependence of the conductivity obeys Arrhenius relation in the temperature range of 303 K to 353 K.

Conductivity and Dielectric Analysis of Cellulose Based Solid Polymer Electrolytes Doped with Ammonium Carbonate (NH4CO3)

2015 ◽  
Vol 719-720 ◽  
pp. 67-72 ◽  
Author(s):  
M.I.H. Sohaimy ◽  
Mohd Ikmar Nizam Isa
Keyword(s):  
Dielectric Constant ◽  
Polymer Electrolytes ◽  
Room Temperature ◽  
Ammonium Carbonate ◽  
Dielectric Behavior ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Dielectric Analysis ◽  
Solution Cast ◽  
Cast Technique

The present work investigated the effect of carboxy methylcellulose (CMC) solid polymer electrolytes doped with ammonium carbonate (AC) prepared from solution cast technique. The CMC-AC solid polymer electrolytes system has been analyzed using EIS to understand its conductivity and dielectric behavior at temperature range of 303 K to 363 K. The highest conductivity achieved at room temperature (303K) is 7.71 x 10-6S cm-1doped with 7wt.% of AC and all samples follows Arrhenius behaviour. The dielectric constant (εr) value was found to be dependent of ionic dopant.

Studies of Ionic Conductivity and Dielectric Behavior in Polyacrylonitrile Based Solid Polymer Electrolytes

2011 ◽  
Vol 312-315 ◽  
pp. 116-121 ◽  
Author(s):  
Zurina Osman ◽  
Khairul Bahiyah Md. Isa ◽  
Lisani Othman ◽  
Norlida Kamarulzaman
Keyword(s):  
Ionic Conductivity ◽  
Room Temperature ◽  
Dielectric Behavior ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Ion Diffusion ◽  
Lithium Triflate ◽  
Different Temperatures ◽  
Solution Cast ◽  
Cast Technique

The solid polymer electrolyte films consisting of polyacrylonitrile (PAN) as the host polymer, lithium triflate (LiCF3SO3) and sodium triflate (NaCF3SO3) as dopant salts were prepared by the solution cast technique. The pure PAN film was prepared as a reference. The films were characterized using a.c. impedance spectroscopy. At room temperature, the highest conductivity for the sample from the (PAN+LiCF3SO3) system and the (PAN+NaCF3SO3) system is 3.04 x 10-4 Scm-1 and 7.13 x 10-4 Scm-1, respectively. The temperature dependence of ionic conductivity for the highest conducting film from both systems follows the Arrhenius equation in the temperature range of 303 K to 353 K. The frequency dependence of ionic conductivity, , complex permittivity, *, and complex electrical modulus, M* were studied at different temperatures. The ionic conductivity and the dielectric behavior are described in terms of ion diffusion and polarization.

scholarly journals Conductivity Performance of Biopolymer Membrane based on Kappa-Carrageenan

2019 ◽  
Vol 7 (4.14) ◽  
pp. 512
Author(s):  
Rosnah Zakaria ◽  
Asiah Mohd Nor ◽  
Nor Kartini Jaafar ◽  
Ab Malik Marwan Ali
Keyword(s):  
Room Temperature ◽  
New Technology ◽  
Ammonium Thiocyanate ◽  
Ftir Studies ◽  
High Proton ◽  
Smart Energy Systems ◽  
Maximum Conductivity ◽  
Solution Cast ◽  
Kappa Carrageenan ◽  
Cast Technique

Smart energy systems are well-known among researchers who wish to introduce new technology. Biopolymer is an environmentally friendly material. Kappa-Carrageenan is one type of biopolymer with high proton conductivity and durability which has been studied for almost 10 years. The membrane based on kappa-carrageenan was prepared using solution cast technique incoorperated with ammonium thiocyanate (NH4SCN). The solution was poured into glass petri dishes and left to dry at room temperature before further dying in an oven at 60°C to obtain thin films. The highest conductivity was obtained for 40 wt. % NH4SCN added kappa-carrageenan. The conductivity dropped when the amount of kappa-carrageenan is equal to the amount of NH4SCN. The maximum conductivity of kappa-carrageenan incorporated with NH4SCN obtained is 1.64E-03 S cm-1. FTIR studies show peak at 1638 cm-1 in pure kappa-carrageenan which slowly disappeared at 60 wt. % kappa-carrageenan. It is however characterized by a peak attributed to NH4SCN at 1600 cm-1 which appeared for 50 wt. % of kappa-carrageenan and below.  

Comparative Studies on Li/LiI-Li2WO4-Li3PO4/Metal Oxide Electrochemical Cells

2006 ◽  
Vol 517 ◽  
pp. 275-277 ◽  
Author(s):  
Azizah Hanom Ahmad ◽  
Ri Hanum Yahaya Subban ◽  
R. Zakaria ◽  
A.M.M. Ali
Keyword(s):  
Metal Oxide ◽  
Room Temperature ◽  
Lithium Ion ◽  
Open Circuit ◽  
Electrochemical Performances ◽  
Electrochemical Cells ◽  
Ion Conductor ◽  
Lithium Cell ◽  
Oxide Electrolyte ◽  
Better Than

A series of experiment has been carried out to study the electrochemical performances of lithium primary cells using different cathode materials. The cathode material was made of metal oxide, electrolyte, activated carbon, and PVdF with a wt. ratio of 60: 20:10:10. PVdF was added as a binder. The metal oxides used are MnO2 and V2O5. The anode was made up of lithium metal and LiI-Li2WO4-Li3PO4 compound is used as an electrolyte. In this work the open circuit voltage (OCV) of Li/MnO2 and Li/V2O5 obtained is about 3.0 V and 3.2 V respectively. This shows that LiI-Li2WO4-Li3PO4 compound is lithium ion conductor. Lithium cell showed better performance at 100º C than at room temperature. Among these two types of cells investigated, cell Li/V2O5 worked better than the Li/MnO2 cell at room temperature and at 100°C as this cell exhibits the longest continuous discharge time and the highest OCV.

PREPARATION OF CARBON–NITROGEN NANOTUBES (CNNTs)–POLY ETHYLENE OXIDE (PEO) COMPOSITES FILMS AND THEIR ELECTRICAL CONDUCTIVITY MEASUREMENT

2011 ◽  
Vol 10 (04n05) ◽  
pp. 1091-1094 ◽  
Author(s):  
RAM MANOHAR YADAV ◽  
RAJESH KUMAR ◽  
KALPANA AWASTHI ◽  
O. N. SRIVASTAVA
Keyword(s):  
Electrical Conductivity ◽  
Room Temperature ◽  
Composite Films ◽  
Conductivity Measurement ◽  
Electrical Conductivity Measurement ◽  
Solution Cast ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Cast Technique ◽  
Film Conductivity

The present work describes the preparation characterization and electrical conductivity measurement of carbon–nitrogen (C–N) nanotubes–PEO composites films. CNNTs–PEO composite films have been prepared by using the solution cast technique and characterized by scanning electron microscope (SEM PHILIPS XL-20). The DC electrical conductivity measurements of the composite films revealed that for PEO film conductivity has been found to be ~ 7.5 × 10-8 Scm-1, and for C–N nanotubes (~ 20 wt.%)–PEO film it was found to be ~6.2 Scm-1 at room temperature. Thus, compared to the PEO film, the conductivity of the C–N nanotubes (~ 20 wt.%)–PEO composite film is eight orders of magnitude higher. The same conductivity of ~ 6.2 Scm-1 for the carbon nanotubes (CNT)–PEO composites comes out at 50 wt.% of CNT in PEO as reported earlier by our group. The conductivity increases with the increase of temperature, confirming the semiconducting nature of the C–N nanotubes–PEO composites.

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