Polymer electrolytes based on poly(ethylene glycol) dimethyl ether and the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate: Preparation, physico-chemical characterization, and theoretical study

Costa, Luciano T.; Lavall, Rodrigo L.; Borges, Raquel S.; Rieumont, Jacques; Silva, Glaura G.; Ribeiro, Mauro C. C.

doi:10.1016/j.electacta.2007.03.061

Cited by 32 publications

(21 citation statements)

References 40 publications

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“…perfluorinated polymers [5,6], aromatic polymers [7][8][9] and hydro-carbon polymers [10,11], have often been used as IL-based polymer electrolytes (PEs). High ionic conductivity, which is a critical requirement for polymer/IL composite electrolytes in PEMFCs, may be achieved by introducing more IL into PEs; but this is usually accompanied by reductions in mechanical strength and dimensional stability, especially at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

Enhanced ion transport in polymer–ionic liquid electrolytes containing ionic liquid-functionalized nanostructured carbon materials

Wang

et al. 2015

Carbon

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Section: Introductionmentioning

confidence: 99%

Enhanced ion transport in polymer–ionic liquid electrolytes containing ionic liquid-functionalized nanostructured carbon materials

Wang

et al. 2015

Carbon

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“…Further improvements in the current collector/nanocomposite contact should be pursued. We are presently testing the addition of ionic liquids to the polymer electrolyte as a strategy to improve conductivity and capacitance [33]. …”

mentioning

confidence: 99%

Polymeric nanomaterials as electrolyte and electrodes in supercapacitors

et al. 2009

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The energy challenge requires a broad range of options for energy harvesting, storage, and conversion. We have produced polymeric coatings by spraying, to be used as electrolyte and electrodes in a fl exible electrochemical double layer capacitor. A thermoplastic polyurethane and a low molecular weight block copolyether were employed with LiClO 4 to prepare solid polymeric electrolytes. Carbon black (CB) and multi-walled carbon nanotubes (MWNTs) were dispersed in the polymer blend electrolyte to produce nanostructured composite electrodes. The conductivities increased with the addition of block copolyether and carbon nanotubes to the electrolyte and electrode, respectively. Scanning electron microscopy (SEM) and atomic force microscope (AFM) images of the nanocomposite electrodes showed nanoagglomerates of CB connected by carbon nanotubes. The solid supercapacitor prepared with these new materials as electrolyte and electrodes showed superior performance to other similar systems. The resulting safe and fl exible multilayer device can meet the requirements of modern devices. KEYWORDSPolymeric electrolyte blend, nanocomposite electrode, carbon black, carbon nanotube, supercapacitor Electrochemical capacitors or supercapacitors [1,2], using the electric double layer charge at the electrode/electrolyte interface of a highly porous electrode, can have an important role in new technologies. The properties of supercapacitors complement the defi ciencies of other power sources, such as batteries and fuel cells [3].Nanostructured carbon-based materials have been used in electrodes for electrochemical double layer capacitors (EDLC). The relationship between the surface area, total pore volume, average pore size, and the pore size distribution of the materials has a strong infl uence on the electrochemical characteristics of the resulting capacitor [3,4]. In such devices, activated carbons, carbon black or carbon nanotube composites have been employed as electrodes [3 6], mainly with liquid electrolytes [7]. Usually, the electrolytes employed in the electrochemical capacitors are acids, bases or salts dissolved in aqueous or organic solvents. Ionic liquids have also been investigated in supercapacitors [8 10]. The use of corrosive liquid electrolytes may cause dangerous leakages, which decrease the safety and lifetime of the capacitors [11,12]. To reduce problems associated Nano Research 734Nano Res (2009) 2: 733 739 with the management of corrosive ionic conductors, as well as to allow the preparation of thin film cells with high reliability, the use of solid polymer electrolytes (SPE) has been proposed [11, 13 16]. The performance of carbon-based polymer supercapacitors is closely associated with the characteristics of the materials used, such as new carbonaceous and electrolytes. The characteristics of the polymer electrolyte need to be tailored with the goal of increasing conductivity under specific experimental conditions. A degree of matching between the carbonaceous pore size and the microstructural arra...

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“…Electrical conductivity of the cellulose-BMITFSI system was also found to be increased at higher humidity level. Costa et al [25] have reported the increase in amorphous phases of polyethylene oxide (PEO)/ [dmim]PF 6 and PEO/[bmim]PF 6 due to coordination of imidazolium cations by both anions and oxygen atoms of PEO chains. We also anticipated the increase of amorphous phase in the cellulose-BMITFSI system due to entrapment of BMITFSI molecules between cellulose layers during its regeneration process.…”

Section: Dispersion Of Bmitfsimentioning

confidence: 99%

Electrical and electromechanical properties of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide-blended cellulose

Mahadeva

Chen

Kim

2010

Ionics

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The effect of 1-butyl-3-methylimidazolium bis (trifluoromethylsulfonyl)imide (BMITFSI) blending on the electromechanical and electrical properties of cellulose was premeditated by taking bending actuator test and electrical impedance analysis. Dispersion of BMITFSI in cellulose matrix was carried out by solution blending technique. Upon blending BMITFSI, bending displacement of the actuator was enhanced by eight times as compared to that of the pristine cellulose. Similar improvement in the AC conductivity of cellulose was observed. The effect of BMITFSI content and humidity on electromechanical and electrical properties of BMITFSI-loaded cellulose was discussed.

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Polymer electrolytes based on poly(ethylene glycol) dimethyl ether and the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate: Preparation, physico-chemical characterization, and theoretical study

Cited by 32 publications

References 40 publications

Enhanced ion transport in polymer–ionic liquid electrolytes containing ionic liquid-functionalized nanostructured carbon materials

Enhanced ion transport in polymer–ionic liquid electrolytes containing ionic liquid-functionalized nanostructured carbon materials

Polymeric nanomaterials as electrolyte and electrodes in supercapacitors

Electrical and electromechanical properties of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide-blended cellulose

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