The preparation of quaternary ammonium-based ionic liquid containing a cyano group and its properties in a lithium battery electrolyte

Egashira, Makoto; Okada, Shigeto; Yamaki, Jun Ichi; Dri, Diego Alejandro; Bonadies, F.; Scrosati, B.

doi:10.1016/j.jpowsour.2004.06.022

Cited by 113 publications

(57 citation statements)

References 19 publications

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“…Very promising resultst argeting the improvement in lithium-ion transport and an enhanced compatibilityw ith standard electrode materials were obtained, among other things, by mixing different ILs; [178][179][180][181] adding functional organic compounds (e.g.,V C, EC, or chloroethylene carbonate); [179,[182][183][184][185][186][187] or designing functionalized ILs, including asymmetricala nions [101,[188][189][190][191][192][193] or ether/ester groups, [101,[194][195][196][197] as well as cyano groups. [198] The incorporation of an oxygen atom into the aliphatic side chain, for instance, resultedi nasignificantly decreased melting temperature and enhanced ionic conductivity, which was attributed to reduced crystal packing of the ions. [197,199] Nevertheless, the incorporation of such an ether function has ad etrimental impact on the thermaland electrochemical stability.…”

Section: Il-based Electrolytesmentioning

confidence: 99%

Safer Electrolytes for Lithium‐Ion Batteries: State of the Art and Perspectives

et al. 2015

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Lithium-ion batteries are becoming increasingly important for electrifying the modern transportation system and, thus, hold the promise to enable sustainable mobility in the future. However, their large-scale application is hindered by severe safety concerns when the cells are exposed to mechanical, thermal, or electrical abuse conditions. These safety issues are intrinsically related to their superior energy density, combined with the (present) utilization of highly volatile and flammable organic-solvent-based electrolytes. Herein, state-of-the-art electrolyte systems and potential alternatives are briefly surveyed, with a particular focus on their (inherent) safety characteristics. The challenges, which so far prevent the widespread replacement of organic carbonate-based electrolytes with LiPF6 as the conducting salt, are also reviewed herein. Starting from rather "facile" electrolyte modifications by (partially) replacing the organic solvent or lithium salt and/or the addition of functional electrolyte additives, conceptually new electrolyte systems, including ionic liquids, solvent-free, and/or gelled polymer-based electrolytes, as well as solid-state electrolytes, are also considered. Indeed, the opportunities for designing new electrolytes appear to be almost infinite, which certainly complicates strict classification of such systems and a fundamental understanding of their properties. Nevertheless, these innumerable opportunities also provide a great chance of developing highly functionalized, new electrolyte systems, which may overcome the afore-mentioned safety concerns, while also offering enhanced mechanical, thermal, physicochemical, and electrochemical performance.

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Section: Il-based Electrolytesmentioning

confidence: 99%

Safer Electrolytes for Lithium‐Ion Batteries: State of the Art and Perspectives

et al. 2015

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“…Egashira et al reported [17] that an IL based on a cyanosubstituted quaternary ammonium cation (see scheme in Fig. 3), having an ionic conductivity of 10 −4 S/cm, allows reversible lithium deposition/dissolution.…”

Section: Aprotic Ilsmentioning

confidence: 99%

Potentialities of ionic liquids as new electrolyte media in advanced electrochemical devices

Fernicola

Scrosati

Ohno

2006

Ionics

240

156

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This paper reviews the various classes of ionic liquids (ILs) in view of their established and expected applications in advanced electrochemical devices, such as lithium batteries, fuel cells, and supercapacitors. In this respect, particular attention is devoted to aprotic and protic ILs, with a related discussion in terms of their thermal and transport properties. In addition, the role in the electrochemical technology of a new class of ILs having cation and anion tethered in an intramolecular form is stressed. Due to their emerging importance, IL-based polymers are finally reported and discussed. A conclusion, where the expected evolution of the ILs research and development is evaluated, is also included.

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“…and the ester group on the cation of the ILs. Similarly, Egashira showed the improved properties of the quaternary ammonium-based ILs containing cyano functional groups (Egashira et al 2004). Most recently, Hussey and coworkers designed and synthesized a series of piperdinium cation-based ILs with a propylene carbonate (PC) moiety that showed favorable electrochemical characteristics for Li metal batteries (Tsuda et al 2011).…”

Section: Electrolytes Based On Ionic Liquidsmentioning

confidence: 93%

Electrolytes for high-energy lithium batteries

et al. 2011

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From aqueous liquid electrolytes for lithiumair cells to ionic liquid electrolytes that permit continuous, high-rate cycling of secondary batteries comprising metallic lithium anodes, we show that many of the key impediments to progress in developing next-generation batteries with high specific energies can be overcome with cleaver designs of the electrolyte. When these designs are coupled with as cleverly engineered electrode configurations that control chemical interactions between the electrolyte and electrode or by simple additives-based schemes for manipulating physical contact between the electrolyte and electrode, we further show that rechargeable battery configurations can be facilely designed to achieve desirable safety, energy density and cycling performance.

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The preparation of quaternary ammonium-based ionic liquid containing a cyano group and its properties in a lithium battery electrolyte

Cited by 113 publications

References 19 publications

Safer Electrolytes for Lithium‐Ion Batteries: State of the Art and Perspectives

Safer Electrolytes for Lithium‐Ion Batteries: State of the Art and Perspectives

Potentialities of ionic liquids as new electrolyte media in advanced electrochemical devices

Electrolytes for high-energy lithium batteries

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