High-performance and flexible solid-state supercapacitors based on high toughness and thermoplastic poly(vinyl alcohol)/NaCl/glycerol supramolecular gel polymer electrolyte

2019 ◽  
Vol 324 ◽  
pp. 134874 ◽  
Author(s):  
Shuijiao Peng ◽  
Xingzong Jiang ◽  
Xiaotong Xiang ◽  
Kai Chen ◽  
Guoqi Chen ◽  
...  
Keyword(s):  
Solid State ◽  
Polymer Electrolyte ◽  
Vinyl Alcohol ◽  
High Performance ◽  
Gel Polymer Electrolyte ◽  
Poly Vinyl Alcohol ◽  
Supramolecular Gel ◽  
High Toughness

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.

scholarly journals Thermostable gel polymer electrolyte based on succinonitrile and ionic liquid for high-performance solid-state supercapacitors

2016 ◽  
Vol 328 ◽  
pp. 510-519 ◽  
Author(s):  
Gaind P. Pandey ◽  
Tao Liu ◽  
Cody Hancock ◽  
Yonghui Li ◽  
Xiuzhi Susan Sun ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Solid State ◽  
Polymer Electrolyte ◽  
High Performance ◽  
Gel Polymer Electrolyte

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.

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