Lithium-conducting ionic melt electrolytes from polyether-functionalized fluorosulfonimide anions

Hallac, BoutrosB.; Geiculescu, Olt E.; Rajagopal, Rama V.; Creager, Stephen E.; DesMarteau, Darryl D.

doi:10.1016/j.electacta.2008.03.061

Cited by 26 publications

(26 citation statements)

References 31 publications

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“…Figure 6 shows the variable-temperature TGA results at 5°C min −1 for the electrolytes. The −SO 2 F group is far more reactive than −SO 2 CF 3 toward water ͑especially at elevated temperature͒, and the −SO 2 F group is used as an intermediate for the formation of sulfonylimide [40][41][42] or sulfonate 43 functional groups by reactions with nucleophiles ͑amine or OH − ͒. 1͒, but significant mass loss occurs above this temperature.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical and Physicochemical Properties of PY[sub 14]FSI-Based Electrolytes with LiFSI

Paillard

Zhou

Henderson

et al. 2009

J. Electrochem. Soc.

153

144

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We report here the characterization of Li battery electrolytes based upon the N -butyl- N -methylpyrrolidinium bis(fluorosulfonyl)imide ionic liquid (PY14FSI) with lithium bis(fluorosulfonyl)imide (LiFSI) as a support salt. These electrolytes show low viscosity relative to other pyrrolidinium-based ionic liquids (ILs) and corresponding higher conductivity at subambient temperatures. The melting point of the IL decreases with the addition of LiFSI and concentrated samples remain totally amorphous. The electrolytes exhibit decreased thermal stability and increased parasitic cathodic reactions with increasing LiFSI fraction relative to the pure IL, probably due to a higher impurity level for the commercial LiFSI. Despite this, the electrolytes have excellent lithium cycling behavior at 20°C .

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Section: Resultsmentioning

confidence: 99%

Electrochemical and Physicochemical Properties of PY[sub 14]FSI-Based Electrolytes with LiFSI

Paillard

Zhou

Henderson

et al. 2009

J. Electrochem. Soc.

153

144

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“…576 High ionic conductivity (~10 -6 S cm -1 at 30 °C) and lithium ion transference numbers were obtained. Creager et al also prepared the polymer electrolytes based on linear PEO containing fluorosulfonimide lithium salt (PEOFSI-Li), 577 and arylfluorosulfonimide lithium salt (PEOAFSI-Li). 578 As discussed in Section 4.1.1, linear PEO copolymer containing single-ion group will be a good candidate for the preparation of polymer electrolytes owing to the good and tunable properties of BCPs.…”

Section: Peo-based Single-ion Electrolytesmentioning

confidence: 99%

Poly(ethylene oxide)-based electrolytes for lithium-ion batteries

2015

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This article reviews the PEO-based electrolytes for lithium-ion batteries.Poly(ethylene oxide) (PEO) based materials are widely considered as promising candidates of polymer hosts in solid-state electrolytes for high energy density secondary lithium batteries. They have several specific advantages such as high safety, easy fabrication, low cost, high energy density, good electrochemical stability, and excellent compatibility with lithium salt. However, the typical linear PEO does not reach the production requirement because its insufficient ionic conductivity due to the high crystallinity of the ethylene oxide (EO) chains, which can restrain the ionic transition due to the stiff structure especially at low temperature. The scientists have explored different approaches to reduce the crystallinity hence to improve the ionic conductivity of PEO-based electrolytes, including: blending, modifying and making PEO derivatives etc. This review is focused on surveying the recent developments and issues about PEO-based electrolytes for lithium-ion batteries.

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“…Another example by Hallac et al shows a single fluorinated lithium sulfonimide attached to poly(ethylene glycol) ( 148 , Scheme ) . Watanabe and co‐workers developed polyanion LiPPI (Scheme ), which they alloyed with polyethers, and a similar polyanion, LiPFSI (Scheme ), was synthesized as a blend with polyvinylidene fluoride and poly(ethylene glycol) .…”

Section: Applications Of Cf2cf2‐containing Compoundsmentioning

confidence: 99%

Advances in the Synthesis and Application of Tetrafluoroethylene‐ and 1,1,2,2‐Tetrafluoroethyl‐Containing Compounds

et al. 2018

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In this review, we provide a comprehensive and critical perspective on the synthesis and application of 1,1,2,2‐tetrafluoroethyl‐ and tetrafluoroethylene‐containing compounds. These structures have been the focus of increasing attention as witnessed by a spectrum of new synthetic approaches, which have recently appeared in the literature. Likewise, applications of molecules containing the CF2CF2 fragment as pharmaceuticals, agrochemicals, pesticides, and advanced materials are described. It is expected that the number of successful applications of these compounds will increase in the future as a result of availability of the synthetic methods outlined here.

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Lithium-conducting ionic melt electrolytes from polyether-functionalized fluorosulfonimide anions

Cited by 26 publications

References 31 publications

Electrochemical and Physicochemical Properties of PY[sub 14]FSI-Based Electrolytes with LiFSI

Electrochemical and Physicochemical Properties of PY[sub 14]FSI-Based Electrolytes with LiFSI

Poly(ethylene oxide)-based electrolytes for lithium-ion batteries

Advances in the Synthesis and Application of Tetrafluoroethylene‐ and 1,1,2,2‐Tetrafluoroethyl‐Containing Compounds

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