scholarly journals Conductivity and Morphological Studies of Poly(Vinyl Alcohol)-Magnesium Triflate-Ethylene Carbonate Gel Polymer Electrolyte

2021 ◽  
Vol 18 (2) ◽  
pp. 161-175
Author(s):  
Nurul Izzati Ali ◽  
◽  
Siti Norzahirah Zaharuddin ◽  
Nur Aida Syarmeen Mohammad Azis ◽  
Noraishah Syuhada Mohd Rafi ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Vinyl Alcohol ◽  
Electrochemical Impedance ◽  
Ethylene Carbonate ◽  
Gel Polymer Electrolyte ◽  
Poly Vinyl Alcohol ◽  
Weight Percentage ◽  
Morphological Studies ◽  
Solution Casting Method ◽  
Materials Used

Gel polymer electrolyte based on poly (vinyl alcohol)(PVA)–magnesium triflate (MgTf) incorporating with different weight percentage (wt.%) of ethylene carbonate (EC) as plasticizer has been prepared by using solution casting method. The ionic conductivity of PVA–MgTf–EC gel polymer electrolyte has been determined by using Electrochemical Impedance Spectroscopy (EIS) and has achieved an optimum value at 1.26 x 10-4 S.cm-1 when 50 wt.% of EC is added into the system. Fourier Transform Infrared Spectroscopy (FTIR) has been performed to study the molecular interaction between components in PVA-MgTf-EC gel polymer electrolyte. The complexations between the materials used in the electrolyte system are observed based on the shifting of bands and changes in the intensity of peaks in FTIR spectra. The morphological behaviour of electrolytes has been studied by using Field Emission Scanning Electron Spectroscopy (FESEM) to observe the changes of PVA-based gel polymer electrolytes when EC is added to the system. The amorphous peak of PVA-based electrolyte is observed to become broaden with the addition of plasticizer, results in increment in the amorphousness nature of the electrolyte which is determined by X-ray Diffractometer (XRD).

Enhanced supercapacitive performances of functionalized activated carbon in novel gel polymer electrolytes with ionic liquid redox-mediated poly(vinyl alcohol)/phosphoric acid

RSC Advances ◽  
2016 ◽  
Vol 6 (79) ◽  
pp. 75376-75383 ◽  
Author(s):  
Hyun Seok Jang ◽  
C. Justin Raj ◽  
Won-Gil Lee ◽  
Byung Chul Kim ◽  
Kook Hyun Yu
Keyword(s):  
Ionic Liquid ◽  
Activated Carbon ◽  
Phosphoric Acid ◽  
Polymer Electrolyte ◽  
Polymer Electrolytes ◽  
Vinyl Alcohol ◽  
Gel Polymer Electrolyte ◽  
Poly Vinyl Alcohol ◽  
Gel Polymer Electrolytes ◽  
Carbon Supercapacitors

Functionalized activated carbon supercapacitors were fabricated using [EMIM]BF4 mediated PVA/H3PO4 gel polymer electrolytes. The ionic-liquid [EMIM]BF4 addition in PVA/H3PO4 gel polymer electrolyte demonstrated excellent supercapacitor performances.

scholarly journals The Effect of Plasticizers on the Polypyrrole-Poly(vinyl alcohol)-Based Conducting Polymer Electrolyte and Its Application in Semi-Transparent Dye-Sensitized Solar Cells

Membranes ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 791
Author(s):  
KM Manikandan ◽  
Arunagiri Yelilarasi ◽  
SS Saravanakumar ◽  
Raed H. Althomali ◽  
Anish Khan ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Polymer Electrolyte ◽  
Vinyl Alcohol ◽  
Ethylene Carbonate ◽  
Dye Sensitized Solar Cells ◽  
Charge Transfer Resistance ◽  
Poly Vinyl Alcohol ◽  
Average Roughness ◽  
Transfer Resistance ◽  
Doped Polymer

In this work, the quasi-solid-state polymer electrolyte containing poly(vinyl alcohol)-polypyrrole as a polymer host, potassium iodide (KI), iodine (I2), and different plasticizers (EC, PC, GBL, and DBP) was successfully prepared via the solution casting technique. Fourier transform infrared spectroscopy (FTIR) was used to analyze the interaction between the polymer and the plasticizer. X-ray diffraction confirmed the reduction of crystallinity in the polymer electrolyte by plasticizer doping. The ethylene carbonate-based polymer electrolyte showed maximum electrical conductivity of 0.496 S cm−1. The lowest activation energy of 0.863 kJ mol−1 was obtained for the EC-doped polymer electrolyte. The lowest charge transfer resistance Rct1 was due to a faster charge transfer at the counter electrode/electrolyte interface. The polymer electrolyte containing the EC plasticizer exhibited an average roughness of 23.918 nm. A photo-conversion efficiency of 4.19% was recorded in the DSSC with the EC-doped polymer electrolyte under the illumination of 100 mWcm−2.

Electrochemical performance of homologous molybdenum (Ⅵ) redox-active gel polymer electrolyte system

2021 ◽  
Author(s):  
Jiayi Ma ◽  
Yibing Xie
Keyword(s):  
Phosphoric Acid ◽  
Polymer Electrolyte ◽  
Vinyl Alcohol ◽  
Gel Polymer Electrolyte ◽  
Sodium Molybdate ◽  
Phosphomolybdic Acid ◽  
Poly Vinyl Alcohol ◽  
Redox Active ◽  
System P ◽  
Acid Hydrate

Poly (vinyl alcohol)-phosphoric acid-phosphomolybdic acid hydrate (PVA-H3PO4-PMo12, PPP) and poly (vinyl alcohol)-phosphoric acid-sodium molybdate (PVA-H3PO4-Na2MoO4, PPM) are sythensized to form an asymmetric gel polymer electrolyte (GPE) system PPP|PPM. PPM and...

scholarly journals Photo and thermal crosslinked poly(vinyl alcohol)-based nanofiber membrane for flexible gel polymer electrolyte

2022 ◽  
Vol 520 ◽  
pp. 230896
Author(s):  
Nazym Kassenova ◽  
Sandugash Kalybekkyzy ◽  
Memet Vezir Kahraman ◽  
Almagul Mentbayeva ◽  
Zhumabay Bakenov
Keyword(s):  
Polymer Electrolyte ◽  
Vinyl Alcohol ◽  
Gel Polymer Electrolyte ◽  
Poly Vinyl Alcohol ◽  
Nanofiber Membrane

scholarly journals High Performance Poly(vinyl alcohol)-Based Li-Ion Conducting Gel Polymer Electrolyte Films for Electric Double-Layer Capacitors

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1179 ◽  
Author(s):  
Jingwei Wang ◽  
Zejia Zhao ◽  
Shenhua Song ◽  
Qing Ma ◽  
Renchen Liu
Keyword(s):  
Polymer Electrolyte ◽  
Double Layer ◽  
Vinyl Alcohol ◽  
Electric Double Layer ◽  
High Performance ◽  
Ionic Conduction ◽  
Gel Polymer Electrolyte ◽  
Transference Number ◽  
Poly Vinyl Alcohol ◽  
Ion Conducting

With 1-methyl-2-pyrrolidinone (NMP) as the solvent, the biodegradable gel polymer electrolyte films are prepared based on poly(vinyl alcohol) (PVA), lithium bis(trifluoromethane)sulfonimide (LiTFSI), and 1-ethyl-3 methylimidazoliumbis(trifluoromethylsulfonyl)imide (EMITFSI) by means of solution casting. The films are characterized to evaluate their structural and electrochemical performance. The 60PVA-40LiTFSI + 10 wt.% EMITFSI system exhibits excellent mechanical properties and a high ionic transference number (0.995), indicating primary ionic conduction in the film. In addition, because of the flexibility of polymer chain segments, its relaxation time is as low as 5.30 × 10−7 s. Accordingly, a high ionic conductivity (3.6 × 10−3 S cm−1) and a wide electrochemical stability window (~5 V) are obtained. The electric double-layer capacitor (EDLC) based on this electrolyte system shows a specific capacitance of 101 F g−1 and an energy density of 10.3 W h kg−1, even after 1000 charge-discharge cycles at a current density of 0.4 A g−1 under a charging voltage of 2 V. All these excellent properties imply that the NMP-soluble 60PVA-40LiTFSI + 10 wt.% EMITFSI gel polymer electrolyte could be a promising electrolyte candidate for electrochemical device applications.

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