Ambient temperature plastic crystal fast ion conductors (PLICFICS)

Cooper, Emanuel I.; Angell, C. Austen

doi:10.1016/0167-2738(86)90180-3

Cited by 110 publications

(85 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is usually considered that the position of the curves defines the 'ionicity' of solutions lying in the area below the 'ideal KCl line'. It becomes higher as they are closer to the line [55,56]. Therefore, the 'ionicities' of the electrolytes are all lower than that of the LP30 electrolyte and follows the same trend as the conductivity values.…”

Section: Vtf Fittingmentioning

confidence: 72%

Towards practical sulfolane based electrolytes: Choice of Li salt for graphite electrode operation

Zhang

Porcher

Paillard

2018

Journal of Power Sources

View full text Add to dashboard Cite

Abstract:Sulfolane (tetramethylene sulfone, SL) is known for leading to Li-ion electrolytes with high anodic stability. However, the operation of graphite electrodes in alternative electrolytes is usually challenging, especially when ethylene carbonate (EC) is not used as co-solvent. Thus, we study here the influence of the lithium salt on the physico-chemical and electrochemical properties of EC-free SL-based electrolytes and on the performance of graphite electrodes based on carboxymethyl cellulose (CMC). SL mixed with dimethyl carbonate (DMC) leads to electrolytes as conductive as state-of-theart alkyl carbonate-based electrolytes with wide electrochemical stability windows. The compatibility with graphite electrodes depends on the Li salt used and, even though cycling is possible with most salts, lithium difluoro-oxalato borate (LiDFOB) is especially interesting for graphite operation.LiDFOB electrolytes are conductive at room temperature (ca. 6 mS cm -1 ) with an anodic stability slightly below 5 V vs. Li/Li + on particulate carbon black electrodes. In addition, it allows cycling graphite electrodes with steady capacity and high coulombic efficiency without any additive. The testing of graphite electrodes in half-cells is, however, problematic with SL:DMC mixtures and, by switching the Li metal counter electrode for LiFePO4, the graphite electrode achieves better practical performance in terms of rate capability.

show abstract

Section: Vtf Fittingmentioning

confidence: 72%

Towards practical sulfolane based electrolytes: Choice of Li salt for graphite electrode operation

Zhang

Porcher

Paillard

2018

Journal of Power Sources

View full text Add to dashboard Cite

show abstract

“…The nonchloroaluminate system has been intensively investigated, since fluoroanions are also attractive candidates for RTILs [29,60,61]. The significant difference from the chloroaluminate system is its stability in air.…”

Section: Nonchloroaluminate Systemmentioning

confidence: 99%

Electrochemical Windows of Room‐Temperature Ionic Liquids

Matsumoto¹

2005

Electrochemical Aspects of Ionic Liquids

View full text Add to dashboard Cite

“…Crystal plastic solid electrolytes have been emerging as a suitable class of materials that can substitute for polymer and liquid electrolytes in lithium-based rechargeable batteries. [1][2][3] The ionic transport characteristic of crystal plastic electrolytes is of critical importance to the optimization of theses electrolytes for applications in batteries and fuel cells. Using solid electrolytes, instead of conventional liquid electrolytes in electrochemical systems, improves the safety through reduction of vapor pressure and elimination of electrolyte leakage.…”

mentioning

confidence: 99%

Solid Electrolyte Based on Succinonitrile and LiBOB

Abouimrane

Davidson

2007

J. Electrochem. Soc.

View full text Add to dashboard Cite

This paper reports physical and electrochemical properties of a solid electrolyte for lithium batteries formed by doping a plastic crystal solvent, succinonitrile, with lithium bioxalato borate ͑LiBOB͒. Thermal properties, solubility limits, conductivity, compatibility with lithium, and range of electrochemical stability have been studied. Succinonitrile doped with 4 mol % LiBOB is a solid at room temperature and melts near 50°C. Electrochemical cells employing either LiFePO 4 Lithium-ion batteries have been widely used as power sources for modern portable electronic devices, such as laptop computers, cellular phones, and video cameras. However, these batteries use liquid electrolytes with organic solvents, which are flammable and easy to ignite on exposure to high temperatures. To solve this safety problem, there is a strong desire to switch to non-or less-flammable electrolytes. Crystal plastic solid electrolytes have been emerging as a suitable class of materials that can substitute for polymer and liquid electrolytes in lithium-based rechargeable batteries.1-3 The ionic transport characteristic of crystal plastic electrolytes is of critical importance to the optimization of theses electrolytes for applications in batteries and fuel cells. Using solid electrolytes, instead of conventional liquid electrolytes in electrochemical systems, improves the safety through reduction of vapor pressure and elimination of electrolyte leakage. In comparison to the polymer electrolytes, crystal plastic electrolytes have been shown to have higher ionic conductivites 3,4 and can provide good room-temperature performance. 5,6 The lithium-ion transference number, the electrochemical window, the crystal plastic temperature range, and the stability vs lithium determine the utility of these materials as electrolytes for lithium batteries.A few prior studies have been reported on lithium batteries using crystal plastic electrolytes. 3,[5][6][7][8] The electrolytes used were a mixture of a plastic crystal solvent from the pyrazolium imide family or succinonitrile ͑SCN͒ with lithium bis-trifluoromethanesulfonyl imide ͓Li͑CF 3 SO 2 ͒ 2 N͔ ͑LiTFSI͒ salt. In these previous investigations, it was observed that 5 mol % LiTFSI in succinonitrile was sufficient to reach a useful ionic conductivity for room-temperature application, whereas for other plastic crystal electrolytes, such as 5-methyl-5,6,7,8-tetrahydropyrazolo͓1,2-a͔pyridazin-4-ium trifluoromethanesulfonimide, N,NЈ-pentamethylene pyrazolium bis͑trifluoromethanesulfonyl͒imide, or N,NЈ-diethy1-3-methylpyrazolium bis͑trifluoromethanesulfonyl͒imide a composition higher than 10 mol % LiTFSI was necessary. [6][7][8] In this paper, we present an investigation of the thermal behavior and conductivity of a plastic crystal electrolyte formed by doping succinonitrile with 4 mol % lithium bioxalato borate ͓Li͑C 2 O 4 ͒ 2 B͔ ͑LiBOB͒, and a study of the formation and stability of the lithiumelectrolyte interface. We also report on the results of electrochemical studies of this solid electrolyt...

show abstract

Ambient temperature plastic crystal fast ion conductors (PLICFICS)

Cited by 110 publications

References 7 publications

Towards practical sulfolane based electrolytes: Choice of Li salt for graphite electrode operation

Towards practical sulfolane based electrolytes: Choice of Li salt for graphite electrode operation

Electrochemical Windows of Room‐Temperature Ionic Liquids

Solid Electrolyte Based on Succinonitrile and LiBOB

Contact Info

Product

Resources

About