Ether-functionalized ionic liquid electrolytes for lithium-air batteries

Nakamoto, Hirofumi; Suzuki, Yushi; Shiotsuki, Taishi; Mizuno, Fuminori; Higashi, Shouichi; Takechi, Kensuke; Asaoka, Takahiko; Nishikoori, Hidetaka; Iba, Hideki

doi:10.1016/j.jpowsour.2013.05.147

Cited by 71 publications

(58 citation statements)

References 18 publications

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“…Repetitive cycling was done by Cui et al [50] with PP 13 TFSI-LiClO 4 (0.4 M) as electrolyte and an oxygen electrode made of vertically aligned carbon nanotubes. The values for the first (dis-)charge capacity and the observed (dis-)charge potentials were comparable to those reported by Mizuno et al, [47] Higashi et al, [48] and Nakamoto et al, [49] indicating that the cation of the employed ionic liquid is of major importance. However, the specific capacity dropped rather rapidly upon 20 cycles (20% to 56% capacity retention, depending on the cycling protocol).…”

Section: Ionic Liquid-based Electrolytes For Li-o 2 Batteriessupporting

confidence: 87%

“…A later study confirmed these results by comparing four ionic liquids, namely DEMETFSI, PP 13 TFSI, N-methoxyethyl-Nmethylpiperidinium (PP 12O1 TFSI), and PYR 14 TFSI, regarding their stability versus the oxygen superoxide. Among these, PP 12O1 TFSI exhibited the lowest stability towards the superoxide radical anion, while PYR 14 TFSI and DEMETFSI were shown to have the highest oxygen diffusion coefficients [49]. However, for the study of such ionic liquids in lithium-oxygen cells, they compared electrolytes made of PP 13 TFSI and DEMETFSI comprising 0.32 mol kg −1 of LiTFSI and no continuous (dis-)charge cycles of the studied cells were presented.…”

Section: Ionic Liquid-based Electrolytes For Li-o 2 Batteriesmentioning

confidence: 99%

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Ionic Liquid-based Electrolytes for Li Metal/Air Batteries: A Review of Materials and the New 'LABOHR' Flow Cell Concept

Bresser¹,

Paillard²,

Passerini³

2014

Journal of Electrochemical Science and Technology

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The Li-O 2 battery has been attracting much attention recently, due to its very high theoretical capacity compared with Li-ion chemistries. Nevertheless, several studies within the last few years revealed that Li-ion derived electrolytes based on alkyl carbonate solvents, which have been commonly used in the last 27 years, are irreversibly consumed at the O 2 electrode. Accordingly, more stable electrolytes are required capable to operate with both the Li metal anode and the O 2 cathode. Thus, due to their favorable properties such as non volatility, chemical inertia, and favorable behavior toward the Li metal electrode, ionic liquid-based electrolytes have gathered increasing attention from the scientific community for its application in Li-O 2 batteries. However, the scale-up of Li-O 2 technology to real application requires solving the mass transport limitation, especially for supplying oxygen to the cathode. Hence, the 'LABOHR' project proposes the introduction of a flooded cathode configuration and the circulation of the electrolyte, which is then used as an oxygen carrier from an external O 2 harvesting device to the cathode for freeing the system from diffusion limitation.

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Section: Ionic Liquid-based Electrolytes For Li-o 2 Batteriessupporting

confidence: 87%

Section: Ionic Liquid-based Electrolytes For Li-o 2 Batteriesmentioning

confidence: 99%

Ionic Liquid-based Electrolytes for Li Metal/Air Batteries: A Review of Materials and the New 'LABOHR' Flow Cell Concept

Bresser¹,

Paillard²,

Passerini³

2014

Journal of Electrochemical Science and Technology

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“…[98][99][100][101][102][103] Among these organic electrolytes, DMSO was thoroughly investigated by Peng et al [ 94 ] , who demonstrated that a solution of 0.1 M LiClO 4 in DMSO could give a very stable electrochemical performance using gold as the cathode substrate. The main discharge product with a DMSO-based electrolyte was Li 2 O 2 without any noticeable electrolyte decomposition after 100 cycles.…”

Section: Other Non-aqueous Electrolytesmentioning

confidence: 99%

The Lithium/Air Battery: Still an Emerging System or a Practical Reality?

et al. 2014

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gas. At the same time, the penetration of renewable energy sources has opened up the possibility of creating a CO 2 -neutral mobility system, where electric vehicles are powered by wind, hydro, and solar energy.Broad fi nancial efforts are being made at a governmental and industrial level to fund research into new areas of energy storage. The U.S. Department of Energy has allocated $20 million to energy storage research in 2012 and $15 million the following year, while the German government has committed itself to ¤200 million between 2011 and 2018; [ 1 ] similar schemes are also being promoted in Japan by the New Energy and Industrial Technology Development Organization (NEDO). The EU-backed "Horizon 2020" program aims at funding research into energy storage technologies, a fi eld where the European Union lags behind the U.S. and East Asia. [ 2 ] Lithium-ion technology has established itself as a type of reliable energy-storage chemistry over the past 20 years, fi rst being used in camcorders, then mobile phones, laptops, and more recently electric cars. However, as the size of the battery pack increases, so does the belief that the cost per kW h and its energy density are not suitable for practical vehicle applications. The Tesla Model S, which sports a 400 km driving range, does so with a whopping 85 kW h battery pack that alone has up to twice the price of a standard economy car. With a current cost higher than 400 $ kW h −1 , electric cars have so far only entered a niche, high-end market where users are willing to pay a premium. Resizing the battery pack, and so the total cost of an electric car, results in a limited driving range (typically 100-150 km) that automatically restricts the use for long-haul journeys and triggers the so-called "range anxiety" feeling. For these reasons, the need to develop energy-storage technologies that enable at least a 500 km driving range, while retaining the same battery pack volume at an affordable price, is of primary interest for governments and car manufacturers. A Brief History of Lithium/Air BatteriesOver the years, the scientifi c community has focused its interest on advanced lithium-ion and fuel cells with only incremental improvements being made. Lithium-ion technology in particular is predicted to reach an asymptotic limit in specifi c Lithium/air is a fascinating energy storage system. The effective exploitation of air as a battery electrode has been the long-time dream of the battery community. Air is, in principle, a no-cost material characterized by a very high specifi c capacity value. In the particular case of the lithium/air system, energy levels approaching that of gasoline have been postulated. It is then not surprising that, in the course of the last decade, great attention has been devoted to this battery by various top academic and industrial laboratories worldwide. This intense investigation, however, has soon highlighted a series of issues that prevent a rapid development of the Li/air electrochemical system. Although several breakthroughs have be...

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“…Na-ion, Mg-ion and metal-air batteries) for the development of potentially safer devices. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] Furthermore, the high (electro)chemical stabilities and non-volatilities exhibited by many IL structures provides interesting electrolyte media for electrochemical gas sensors (e.g. for O 2 , [16][17][18][19] CO 2 ,20,21 NO 2 22 ) where traditional solvents are prone to evaporation leading to device failure, and also for electromechanical actuator, [23][24][25] and electrodeposition applications.…”

mentioning

confidence: 99%

Physical and Electrochemical Investigations into Blended Electrolytes Containing a Glyme Solvent and Two Bis{(trifluoromethyl)sulfonyl}imide-Based Ionic Liquids

Neale

Goodrich

Hughes

et al. 2017

J. Electrochem. Soc.

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In this paper, we report on thermophysical and electrochemical investigations of a series of molecular solvent/ionic liquid (IL) binary mixture electrolytes. Tetraethylene glycol dimethyl ether (TEGDME) is utilized as the molecular solvent component in separate mixtures with two bis{(trifluoromethyl)sulfonyl}imide anion based ILs paired with similarly sized cyclic and acyclic alkylammonium cations; 1-butyl-1-methylpyrrolidinium bis{(trifluoromethyl)sulfonyl}imide, [Pyrr 14 ] [TFSI], or N-butyl-N,N-dimethyl-N-ethylammonium bis{(trifluoromethyl)sulfonyl}imide, [N 1124 ] [TFSI]. The blending of ILs with select molecular solvents is an important strategy for the improvement of the typically sluggish transport capabilities of these interesting electrolytic solvents. Bulk volumetric and transport properties are reported as a function of temperature and binary mixture formulation; demonstrating the capacity for enhancing desired properties of the IL. Micro-disk electrode voltammetry and chronoamperometry in O 2 -saturated binary mixture electrolytes was used to assess the effect of formulation on the solubility and diffusivity of the dissolved gas. In addition, further investigations of the behavior of the O 2 redox couple at a GC macro-disk electrode are discussed. The exploration of ionic liquids (ILs) as alternatives to conventional molecular solvents in electrolyte formulations is continually growing for a variety of electrochemical applications. These low melting organic salts can be tailored to exhibit a variety of properties, including hydrophobicity and thermal, chemical, and electrochemical stability, which make them attractive candidate electrolyte solvents. Composed solely of ionic components, ILs consequently possess intrinsic electrolytic conductivity and are additionally non-volatile. These properties have encouraged the use of ILs as (complete or partial) substitutions of the volatile components of commercial Li-ion batteries, electrochemical double layer capacitors (EDLCs), and other prospective battery technologies (e.g. Na-ion, Mg-ion and metal-air batteries) for the development of potentially safer devices.1-15 Furthermore, the high (electro)chemical stabilities and non-volatilities exhibited by many IL structures provides interesting electrolyte media for electrochemical gas sensors (e.g. for O 2 , 16-19 CO 2 , 20,21 NO 2 22 ) where traditional solvents are prone to evaporation leading to device failure, and also for electromechanical actuator, 23-25 and electrodeposition applications. [26][27][28] Nevertheless, while the properties of ILs are dependent on the virtually unlimited combinations of different cation and anion structures, the attractive features are generally coupled with sluggish transport properties relative to conventional electrolytes based on either aqueous or organic solvents. In turn, electrochemical devices constructed with neat IL electrolytes are likely to suffer transport limitations on useable current rates for the given application, for example restricting power capabiliti...

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Ether-functionalized ionic liquid electrolytes for lithium-air batteries

Cited by 71 publications

References 18 publications

Ionic Liquid-based Electrolytes for Li Metal/Air Batteries: A Review of Materials and the New 'LABOHR' Flow Cell Concept

Ionic Liquid-based Electrolytes for Li Metal/Air Batteries: A Review of Materials and the New 'LABOHR' Flow Cell Concept

The Lithium/Air Battery: Still an Emerging System or a Practical Reality?

Physical and Electrochemical Investigations into Blended Electrolytes Containing a Glyme Solvent and Two Bis{(trifluoromethyl)sulfonyl}imide-Based Ionic Liquids

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