Graphene-Based All-Solid-State Supercapacitor with Ionic Liquid Gel Polymer Electrolyte

2012 ◽  
Vol 1440 ◽  
Author(s):  
G. P. Pandey ◽  
A. C. Rastogi
Keyword(s):  
Ionic Liquid ◽  
Solid State ◽  
Polymer Electrolyte ◽  
Vinylidene Fluoride ◽  
Gel Polymer Electrolyte ◽  
Impedance Analysis ◽  
Specific Power ◽  
Ion Diffusion ◽  
Capacitive Behavior ◽  
Poly Vinylidene Fluoride

ABSTRACTGraphene-based all-solid-state supercapacitors the using ionic liquid gel polymer electrolyte have been fabricated and characterized. The gel polymer electrolyte has been prepared by immobilizing ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate (BMIBF4) with poly(vinylidene fluoride-hexafluoropropylene). Cyclic voltammetry studies show highly capacitive behavior under fast scan rates. Impedance analysis show nominal charge transfer and ion diffusion at pores related resistance contributions. The graphene-based solid-state supercapacitor shows optimum capacitance of 80 mF cm-2 (equivalent to the single electrode specific capacitance of 76 F g-1). This corresponded to the specific energy of 7.4 Wh kg-1 and specific power of 4.5 kW kg-1. The supercapacitor cell shows stable cyclic performances for up to 5000 cycles and possibly beyond.

Thin films of poly(vinylidene fluoride-co-hexafluoropropylene)-ionic liquid mixtures as amperometric gas sensing materials for oxygen and ammonia

The Analyst ◽  
2020 ◽  
Vol 145 (5) ◽  
pp. 1915-1924 ◽  
Author(s):  
Junqiao Lee ◽  
Ghulam Hussain ◽  
Nieves López-Salas ◽  
Douglas R. MacFarlane ◽  
Debbie S. Silvester
Keyword(s):  
Thin Films ◽  
Ionic Liquid ◽  
Thin Layer ◽  
Polymer Electrolyte ◽  
Vinylidene Fluoride ◽  
Gas Sensing ◽  
Gel Polymer Electrolyte ◽  
Liquid Mixtures ◽  
Poly Vinylidene Fluoride ◽  
Ammonia Detection

A gas sensor comprising of a planar electrode device covered with a thin layer of gel polymer electrolyte gave accurate and fast sensing responses for oxygen and ammonia detection in both the cathodic and anodic potential regions.

scholarly journals The Influences of 1-Butyl-3-Methylimidazolium Tetrafluoroborate on Electrochemical, Thermal and Structural Studies as Ionic Liquid Gel Polymer Electrolyte

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1277
Author(s):  
Mariah Zuliana Dzulkipli ◽  
Jamilah Karim ◽  
Azizan Ahmad ◽  
Nurul Akmaliah Dzulkurnain ◽  
Mohd Sukor Su’ait ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Polymer Electrolyte ◽  
Vinylidene Fluoride ◽  
Gel Polymer Electrolyte ◽  
Electrochemical Performances ◽  
Valuable Insight ◽  
Poly Vinylidene Fluoride ◽  
Electrochemical Devices ◽  
Relationship Of ◽  
The Relationship

After decades of development, ionic liquid gel polymer electrolytes (ILGPEs) are currently experiencing a renaissance as a promising electrolyte to be used in electrochemical devices. Their inherent tendency towards poor electrochemical properties have limited their applications and commercialization activities. Henceforth, gel polymer electrolyte (GPE) is being introduced to alleviate the abovementioned issues. In this work, the assessment of the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate [BMIM][BF4] in poly (vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) to form ILGPE was done. The relationship of [BMIM][BF4] towards the dielectric properties at different wt. % ratios and temperature was ascertained. The results indicated that [BMIM]BF4 is able to facilitate fast conduction. Moreover, it was found that [BMIM][BF4] could serve as an effective agent in reducing crystallinity and glass transition temperature of the polymer and thus enhanced the ionic conductivity of the samples. Notwithstanding, the ILGPE sample possessed a high thermal stability up to 300 °C and good electrochemical stability of 4.2 V which are beneficial for operation in electrochemical devices. All in all, the correlation between the ionic liquid chemistry and electrochemical performances could provide a valuable insight to rational selection and design for ILGPE electrolytes.

Sodium ion conducting gel polymer electrolyte using poly(vinylidene fluoride hexafluoropropylene)

2019 ◽  
Vol 241 ◽  
pp. 27-35 ◽  
Author(s):  
Duy Thanh Vo ◽  
Hoang Nguyen Do ◽  
Thien Trung Nguyen ◽  
Thi Tuyet Hanh Nguyen ◽  
Van Man Tran ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Vinylidene Fluoride ◽  
Gel Polymer Electrolyte ◽  
Sodium Ion ◽  
Poly Vinylidene Fluoride ◽  
Ion Conducting
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