Brønsted acid–base and –polybase complexes as electrolytes for fuel cells under non-humidifying conditions

Matsuoka, Hideyuki; Nakamoto, Hirofumi; Susan, Md. Abu Bin Hasan; Watanabe, Masayoshi

doi:10.1016/j.electacta.2005.02.038

Cited by 81 publications

(83 citation statements)

References 12 publications

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“…The preparation of [DMOIM][Br] and [DMOIM][Tf 2 N] is detailed by H. Matsuoka et al. [88] Also, polymer electrolyte membranes that contained PVdF‐HFP and HN(CF 3 SO 2 ) 2 in the ionic liquid [DMOIM][Tf 2 N] were prepared using the solution casting method described by B. Singh et al. [89] It was shown that the polymer electrolyte with the ionic liquid has an ionic conductivity higher by one order of magnitude with the addition of HN(CF 3 SO 2 ) 2 at room temperature.…”

Section: Ionic Liquids For Use In Polymeric Electrolyte Membrane Fmentioning

confidence: 99%

Synthesis and in vitro/in vivo Evaluation of the Antitrypanosomal Activity of 3‐Bromoacivicin, a Potent CTP Synthetase Inhibitor

et al. 2010

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The first convenient synthesis of enantiomerically pure (αS,5S)-α-amino-3-bromo-4,5-dihydroisoxazol-5-yl acetic acid (3-bromoacivicin) is described. We demonstrate that 3-bromoacivicin is a CTP synthetase inhibitor three times as potent as its 3-chloro analogue, the natural antibiotic acivicin. Because CTP synthetase was suggested to be a potential drug target in African trypanosomes, the in vitro/in vivo antitrypanosomal activity of 3-bromoacivicin was assessed in comparison with acivicin. Beyond expectation, we observed a 12-fold enhancement in the in vitro antitrypanosomal activity, while toxicity against mammalian cells remained unaffected. Despite its good in vitro activity and selectivity, 3-bromoacivicin proved to be trypanostatic and failed to completely eradicate the infection when tested in vivo at its maximum tolerable dose.

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Section: Ionic Liquids For Use In Polymeric Electrolyte Membrane Fmentioning

confidence: 99%

Synthesis and in vitro/in vivo Evaluation of the Antitrypanosomal Activity of 3‐Bromoacivicin, a Potent CTP Synthetase Inhibitor

et al. 2010

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“…Indeed, ILs are today considered as the new-generation electrolyte solutions for electrochemical devices such as lithium ion batteries [4], fuel cells [5], capacitors [6], and solar cells [7]. The main properties to take into account in the selection of ILs in view of their practical applications are thermal stability and, particularly, ionic conductivity.…”

Section: Introductionmentioning

confidence: 99%

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

Fernicola

Scrosati

Ohno

2006

Ionics

241

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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“…45 Our initial interest in H + -conducting electrolytes concerned the transport properties of H + in protic ILs. [43][44][45][46][47] At that time, K.-D. Kreuer at the Max Planck Institute for Solid State Research was carrying out pioneering research with non-aqueous proton carriers; [48][49][50][51] his research focused on the autoprotolysis reactions of neutral species such as imidazole and pyrazole, which form proton defects in the systems and accelerate Grotthuss transport. The remarkable changes in conductivity that occur on changing the composition of systems of imidazole or pyrazole and H 2 SO 4 opened a new route to the design of non-aqueous proton conductors.…”

confidence: 99%

Design and Materialization of Ionic Liquids Based on an Understanding of Their Fundamental Properties

Watanabe

2016

Electrochemistry

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Ionic liquids (ILs) are defined as salts that have melting points lower than 100°C. Most are organic salts, and these may be designed and tailored to have suitable properties. ILs are recognized as a third group of solvents (and electrolytes), after water and organic solvents. They are characterized by their unique properties such as nonvolatilities, high thermal stabilities, and high ionic conductivities. In this article, our work on the design and preparation of ILs is briefly reviewed. The concept of ionicity is proposed as a metric to characterize the basic nature (dissociativity) of ILs, which is affected by the Lewis acidity/basicity of cations/anions (i.e., coulombic interactions), the directionality of interactions between cations and anions, and van der Waals interactions between ions. The ionicity of ILs is dominated by a subtle balance between coulombic and van der Waals interactions, which clearly discriminates ILs from conventional high-temperature inorganic molten salts. Here, the design of protic ILs for fuel cell electrolytes, electron-transporting ILs for dye-sensitized solar cell electrolytes, and Li + -conducting solvate ILs for lithium battery electrolytes are discussed based on an understanding of the fundamental properties of ILs. Furthermore, the combination of ILs with polymers and colloidal particles affords intriguing quasi-solid materials (ion gels), and the ion transport in these gels is decoupled from the mechanical relaxation time of these materials, yielding new solid electrolytes. The possibility of temperature and photo-sensitive solubility dependence of polymers in ILs allows the creation of stimuli-responsive materials. Finally, protic ILs/protic salts are demonstrated to be good precursors for N-doped carbon materials.

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Brønsted acid–base and –polybase complexes as electrolytes for fuel cells under non-humidifying conditions

Cited by 81 publications

References 12 publications

Synthesis and in vitro/in vivo Evaluation of the Antitrypanosomal Activity of 3‐Bromoacivicin, a Potent CTP Synthetase Inhibitor

Synthesis and in vitro/in vivo Evaluation of the Antitrypanosomal Activity of 3‐Bromoacivicin, a Potent CTP Synthetase Inhibitor

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

Design and Materialization of Ionic Liquids Based on an Understanding of Their Fundamental Properties

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