Lithium-polymer battery based on an ionic liquid–polymer electrolyte composite for room temperature applications

Chew, Sau Yen; Sun, Jiuru; Wang, Jiazhao; Liu, Huan; Forsyth, Maria; MacFarlane, Douglas R.

doi:10.1016/j.electacta.2008.04.034

Cited by 40 publications

(20 citation statements)

References 32 publications

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“…In Fig. 11a the capacity of the cell can be seen to increase slightly during the first few cycles which could be attributed to the improved electrode-electrolyte contact by the EP additive [27]. Similar behavior can be observed in the cell containing baseline electrolyte but the effect is less pronounced.…”

Section: Resultssupporting

confidence: 74%

Performance of lithium-ion cells using 1 M LiPF6 in EC/DEC (v/v = 1/2) electrolyte with ethyl propionate additive

Kufian

Majid

2009

Ionics

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In this work, 1 M LiPF 6 :EC:DEC (v/v=1/2) was used as a baseline electrolyte where EC is ethylene carbonate and DEC is diethyl carbonate. Ethyl propionate (EP) was used as an additive. The conductivity of the liquid electrolyte was obtained at ambient and elevated temperatures. The highest room temperature conductivity was observed at (8.05±0.16)mS cm −1 for the electrolyte containing 28.6 vol.% EP. Viscosity of the baseline and EP added baseline electrolytes have been measured at room and elevated temperatures. The electrolyte was also characterized by linear sweep voltammetry. The highest conducting electrolyte with 28.6 vol.% EP and the baseline electrolyte were used to fabricate several batteries. The batteries were charged and discharged at room temperature and at −20°C.

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Section: Resultssupporting

confidence: 74%

Performance of lithium-ion cells using 1 M LiPF6 in EC/DEC (v/v = 1/2) electrolyte with ethyl propionate additive

Kufian

Majid

2009

Ionics

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“…[1][2][3][4][5][6][7][8] Though, ethylammonium nitrate was identified as the first low melting point salt about a century ago [9] (without specific mention of it as ionic liquid) the main thrust in the ionic liquid research started only about 15 À etc.). The ILs are self dissociating and do not need the presence of a solvent for the supply of cations and anions as for the case of conventional ionic salts which only get dissociated into cations and anions in the presence of solvent (like NaCl dissolved in water).…”

mentioning

confidence: 99%

“…[3,14] Apart from chemical synthesis, the ionic liquids are also being intensively investigated for developing electrochemical devices. The basic approach is to modify ionic conductivity by incorporating ILs in: 1) solid polymer electrolytes, [15][16][17] 2) polymer gel electrolytes (PGEs), [18][19][20][21] and 3) porous silica xerogel or other solid matrices. [22][23][24][25] Solid polymer electrolytes and polymer gel electrolytes have been used in developing polymer solar cells, [26][27][28][29][30] electrochromic devices, light-emitting electrochemical cell (LEC) [31][32][33] and biosensors.…”

mentioning

confidence: 99%

Properties of Ionic Liquid Confined in Porous Silica Matrix

Singh¹,

Singh²,

Chandra³

2010

ChemPhysChem

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Porous silica matrices of different pore sizes with confined ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate) [BMIM] [PF(6)] were prepared by sol-gel technique using a tetraethyl orthosilicate (TEOS) precursor with an aim to study the changes in physico-chemical properties of ionic liquid on confinement. It is found that on confinement 1) melting point decreases, 2) fluorescence spectra shows a red shift and 3) the vibrational bands are affected particularly those of imadazolium ring, which interacts more with the walls of the silica matrix. Preliminary theoretical calculations suggest that SiO(2) matrix interact more with the heterocyclic group of [BMIM] cation than the tail alkyl chain end group resulting in significant changes in the aromatic vibrations.

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“…[32][33][34][35][36][37][38][39][40][41][42][43][44][45] Ionogels can be obtained by hybridizing ILs with low molecular weight organic gelators, inorganics (e.g. carbon nanotubes, silica, etc.…”

Section: Introductionmentioning

confidence: 99%

Agarose processing in protic and mixed protic–aprotic ionic liquids: dissolution, regeneration and high conductivity, high strength ionogels

et al. 2012

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We have shown that low viscosity alkyl or hydroxyalkyl ammonium formate (ILs) can dissolve agarose, and higher dissolution can be achieved in the mixed, alkyl or hydroxyalkyl ammonium + imidazolium or pyridinium ILs. The polarity parameters α, β, π*, E T (30) and E T N of these IL systems were measured to explain their dissolution ability for agarose. Dissolved agarose was either regenerated using methanol as a precipitating solvent or ionogels were formed by cooling the agarose-IL solutions to ambient temperature. Exceptionally high strength ionogels were obtained from the agarose solutions in N-(2-hydroxyethyl)-ammonium formate or its mixture with 1-butyl-3-methylimidazolium chloride. Regenerated material and ionogels are characterized for their possible degradation/conformational changes and gel properties (thermal hysteresis, strength, viscoelasticity and conductivity) respectively. A high strength, high conducting ionogel was demonstrated to be able to build an electrochromic window. Such ionogels can also be utilized for other soft matter electronic devices and biomedical applications.

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Lithium-polymer battery based on an ionic liquid–polymer electrolyte composite for room temperature applications

Cited by 40 publications

References 32 publications

Performance of lithium-ion cells using 1 M LiPF6 in EC/DEC (v/v = 1/2) electrolyte with ethyl propionate additive

Performance of lithium-ion cells using 1 M LiPF6 in EC/DEC (v/v = 1/2) electrolyte with ethyl propionate additive

Properties of Ionic Liquid Confined in Porous Silica Matrix

Agarose processing in protic and mixed protic–aprotic ionic liquids: dissolution, regeneration and high conductivity, high strength ionogels

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