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
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

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.


2021 ◽  
Author(s):  
Jiayi Ma ◽  
Yibing Xie

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...


2021 ◽  
Vol 18 (2) ◽  
pp. 161-175
Author(s):  
Nurul Izzati Ali ◽  
◽  
Siti Norzahirah Zaharuddin ◽  
Nur Aida Syarmeen Mohammad Azis ◽  
Noraishah Syuhada Mohd Rafi ◽  
...  

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).


Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1179 ◽  
Author(s):  
Jingwei Wang ◽  
Zejia Zhao ◽  
Shenhua Song ◽  
Qing Ma ◽  
Renchen Liu

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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