Electrical and structural properties of multi-walled carbon nanotube–doped polymer electrolyte for photo electrochemical device

2018 ◽  
Vol 30 (8) ◽  
pp. 949-956 ◽  
Author(s):  
A Sachdeva ◽  
B Bhattacharya ◽  
Vijay Singh ◽  
Abhimanyu Singh ◽  
SK Tomar ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Polymer Electrolyte ◽  
Ethylene Carbonate ◽  
Electronic Conductivity ◽  
Complex Impedance ◽  
Solid Polymer ◽  
Arrhenius Behavior ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Multi Walled Carbon Nanotube

The present investigation deals with the preparation of multi-walled carbon nanotube (MWCNT)-doped plasticized polymer electrolyte. The nanocomposite has been prepared using solution casting method. Complex impedance spectroscopy study revealed the utmost room temperature conductivity of 5.6 × 10−4 S/cm when optimized plasticized polymer electrolyte (poly(ethyl methacrylate)+30% sodium iodide+60% ethylene carbonate) was doped with 7% MWCNT. Temperature dependence of conductivity showed Arrhenius behavior. The surface morphology and crystalline–amorphous deviation of the composite was observed using scanning electron microscope. Perfect complexation of various components of the composite was confirmed from Fourier-transform infrared spectroscopy and X-ray diffraction (XRD) data. The transference number measurement was done to calculate the proportionate amount of ionic and electronic conductivity. A dye sensitized solar cell has been fabricated using maximum ionic conductivity of solid polymer electrolyte and its electrical parameters measured at 1 sun condition.

UV-Cured polypropylene mesh-reinforced composite polymer electrolyte membranes

e-Polymers ◽  
2015 ◽  
Vol 15 (2) ◽  
pp. 103-110 ◽  
Author(s):  
Emrah Çakmakçı ◽  
Mustafa Hulusi Uğur ◽  
Atilla Güngör
Keyword(s):  
Polymer Electrolyte ◽  
Polypropylene Mesh ◽  
Ethylene Carbonate ◽  
Composite Membranes ◽  
Electrochemical Stability ◽  
Composite Polymer Electrolyte ◽  
Composite Polymer ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Polyethylene Glycol Diacrylate

AbstractIn this study, a polypropylene (PP) mesh was used to prepare proton- and Li+ conducting composite membranes for fuel cells and lithium rechargeable batteries, respectively. For the preparation of Li+ conducting membrane, polypropylene mesh was first immersed in an electrolyte solution, which was composed of LiBF4 and ethylene carbonate. Then the swollen membrane was immersed in an acetone solution of polyethylene glycol diacrylate (PEGDA), polyvinylidenefluoride-co-hexafluoro-propylene and photoinitiator. Finally, PP fabric was taken out from the solution and exposed to UV irradiation. Furthermore, proton conducting membranes were prepared by immersing the PP mesh into a mixture of vinyl phosphonic acid, PEGDA and photoinitiator. Afterwards, samples were cured under UV light. PP-reinforced membranes designed for fuel cell applications exhibited a room temperature conductivity of 3.3×10-3 mS/cm, while UV-cured electrolyte for Li batteries showed ionic conductivities in the range of 1.61×10-3–5.4×10-3 S/cm with respect to temperature. In addition, for lithium-doped composite polymer electrolyte (CPE), the electrochemical stability window was negligible below 4.75 V vs. Li/Li+. It is concluded that lithium-doped CPE has suitable electrochemical stability to allow the use of high-voltage electrode couples.

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.

scholarly journals Effect of High Ammonium Salt Concentration and Temperature on the Structure, Morphology, and Ionic Conductivity of Proton-Conductor Solid Polymer Electrolytes Based PVA

Membranes ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 262
Author(s):  
Maryam A. M. Saeed ◽  
Omed Gh. Abdullah
Keyword(s):  
Polymer Electrolyte ◽  
Salt Concentration ◽  
Solid Polymer Electrolyte ◽  
Proton Conductor ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Present System ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Proton Conducting

Polyvinyl alcohol (PVA) based proton-conducting solid polymer electrolyte was prepared with a high salt concentration of ammonium nitrate (NH4NO3) by the technique of solvent casting. From the X-ray diffraction studies, the semicrystalline nature of PVA with the inclusion of NH4NO3 was studied. XRD analysis indicates that the highest ion conductive sample exhibits the minimum crystalline nature. The decreasing trend of Jonscher-exponent with temperature rise reveals that the present system is insured by the correlated barrier hopping (CBH) model. The maximum room temperature conductivity was found to be 5.17 × 10−5 S/cm for PVA loaded 30 wt.% of NH4NO3. The ionic transport of the proton-conducting solid polymer electrolyte was studied at the temperature range of 303–353 K. The conductivity-temperature relationship of the systems was analyzed using both the Arrhenius and Vogel–Tammann–Fulcher (VTF) models to explain the ionic hopping mechanism for the system.

Influence of Weight Ratio of Citric Acid Cross Linker on the Structure and Conductivity of the Crosslinked Polymer Electrolytes

2011 ◽  
Vol 391-392 ◽  
pp. 1075-1079
Author(s):  
Gui Jie Liang ◽  
Wei Lin Xu ◽  
Jie Xu ◽  
Xiao Lin Shen ◽  
Mu Yao
Keyword(s):  
Citric Acid ◽  
Polymer Electrolyte ◽  
Mechanical Stability ◽  
Weight Ratio ◽  
Solid Polymer ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
The Matrix ◽  
Polyester Matrix ◽  
Cross Linker

A novel kind of efficient solid polymer electrolyte (SPE) based on crosslinked polyester matrix has been prepared by employing low molecular weight PEG (oligo-PEG, Mw = 400 g/mol), followed by crosslinking of the PEG with citric acid (CA). The oligo-PEG, with small coil size, can be easily penetrated into mesopores of TiO2 photoelectrode, while the mechanical stability of the SPE can also be maintained by crosslinking. The factor of weight ratio of CA cross linker in the hybrid plays an important role in determining the intersegmental distance and free volume of the polymer matrix, which sequentially affects the electrochemical activity of the conductive ions and then the ionic conductivity of the polymer electrolyte. By using the 32.4 wt.% CA in the matrix, the SPE with the optimal room temperature conductivity (σ) of 5.43×10-5 S/cm was obtained.

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).

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.

Characterization of Plasticized Polyether-Urethane Solid Polymer Electrolytes

1994 ◽  
Vol 369 ◽  
Author(s):  
M. Forsyth ◽  
P. Meakin ◽  
D. R. Macfarlane ◽  
A. J. Hill
Keyword(s):  
Free Volume ◽  
Relative Number ◽  
Solid Polymer Electrolytes ◽  
Polymer Chains ◽  
Solid Polymer ◽  
Polymer Complex ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
A Value ◽  
Host Polymer

AbstractThe effect of plasticizer addition on the density, conductivity, glass transition, and free volume behavior of salt containing polyether-urethanes has been examined. The addition of up to 1.5 molal LiC1O4 salt results in an effective crosslinking of the polyether-urethane chains due to the Li+ coordination with the oxygens of the host polymer. This crosslinking decreases inter- and intrachain separation and reduces polymer chain mobility as illustrated by increased density and Tg, decreased free volume, and, at salt concentrations greater than 0.6 molal, decreased conductivity. The addition of approximately 30 wt % tetraglyme plasticizer to the 1 molal LiC1O4/host polymer complex is shown to counter the effective crosslinking resulting in a decreased Tg to a value equal to that of the pure host polymer, increased conductivity, and increased average free volume cavity size to a value equal to that of the pure host polymer. However, the relative number of free volume cavities in the plasticized host polymer/salt complex remains fewer than that of the pure host polymer over the concentration range of plasticizer studied, and in a similar manner the density remains greater than that of the pure host polymer. The room temperature conductivity, free volume, and density behavior in conjunction with the Tg results suggest that the plasticizer addition leads to Li+ coordination with the oxygens of the plasticizer chains as well as increased mobility of the host polymer chains.

Conductivity and Transport Properties Study of Plasticized Carboxymethyl Cellulose (CMC) Based Solid Biopolymer Electrolytes (SBE)

2013 ◽  
Vol 856 ◽  
pp. 118-122 ◽  
Author(s):  
A.S. Samsudin ◽  
M.I.N. Isa
Keyword(s):  
Ionic Conductivity ◽  
Carboxymethyl Cellulose ◽  
Room Temperature ◽  
Ethylene Carbonate ◽  
Casting Method ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Biopolymer Electrolytes ◽  
Arrhenius Relation ◽  
Solution Casting Method

Solid biopolymer electrolytes (SBE) comprising carboxymethyl cellulose (CMC) with NH4Br-EC were prepared by solution casting method. The samples were characterized by impedance spectroscopy (EIS) and sample containing 25wt. % of NH4Br exhibited the highest room temperature conductivity of 1.12 x 10-4S/cm for salted CMC based SBE system. The ionic conductivity increased to 3.31 x 10-3S/cm when 8 wt. % of ethylene carbonate (EC) was added to the highest conductivity. The conductivity-temperature of plasticized SBE system obeys the Arrhenius relation where the ionic conductivity increases with temperature. The influence of EC addition on unplasticized CMC based SBE was found to be dependent on the number and the mobility of the ions. This results revealed that the influence of plasticizer (EC) which was confirmed play the significant role in enhancement of ionic conductivity for SBE system.

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