Non-Aqueous Electrolyte Solutions in Chemistry and Modern Technology

Barthel, J.; Gores, H. J.; Schmeer, Georg; Wächter, Rudolf

doi:10.1515/9783112620786-002

Cited by 13 publications

(8 citation statements)

References 135 publications

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“…One reason for this is the low conductivity of the LBPB solution of only 0.8 mS cm Ϫ1 , measured as given in Ref. 19-21, might be a strong N-Li ϩ -interaction entailing a high association constant. Furthermore, aluminum is anodically passivated.…”

Section: Cycling Efficiency-tablementioning

confidence: 88%

A New Class of Electrochemically and Thermally Stable Lithium Salts for Lithium Battery Electrolytes. V. Synthesis and Properties of Lithium Bis[2,3-pyridinediolato(2−)-O,Oʹ]borate

Barthel

Schmid

Gores

2000

J. Electrochem. Soc.

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Currently various new salts are synthesized to resolve problems associated with electrolytes of primary and secondary lithium batteries. The latest developments include 1,2 1. Lithium salts which are based on the well-known tris(trifluoromethylsulfonyl) methide and bis(trifluoromethylsulfonyl) imide, i.e., variants, such as the cyclic imide Liwhere n ϭ 1-3, 4 the asymmetric methide Li[C(SO 2 CF 3 ) 2 (SO 2 C 4 F 9 )], and the bismethide Li 2 [C 2 (SO 2 CF 3 ) 4 (S 2 O 4 C 3 F 6 )], both synthesized by Sartori et al. 5 2. Lithium imides with new ester type substituents and imides with long fluoroalkyl groups. 6 3. The family of chelatoborates, developed in our laboratory. [7][8][9][10][11][12] 4. A similar class of chelatophosphates where the tetracoordinated boron with two ligands is substitued by the hexacoordinated phosphorous with three ligands. 13 5. A new approach is based on ligands which, instead of solvating cations, 14 displace cations in ion pairs by anion solvation. This is made possible by the strong interaction of the anions with aza-ether compounds. 15 Electron withdrawing substituents such as CF 3 SO 2 Ϫ

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Section: Cycling Efficiency-tablementioning

confidence: 88%

A New Class of Electrochemically and Thermally Stable Lithium Salts for Lithium Battery Electrolytes. V. Synthesis and Properties of Lithium Bis[2,3-pyridinediolato(2−)-O,Oʹ]borate

Barthel

Schmid

Gores

2000

J. Electrochem. Soc.

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“…The distance parameters for the cation Li (a+ = 0.78 A) and for the solvent molecule PC (s = 6.50 A) are taken from Ref. 23. The radius of the anion was estimated to be similar to that of the BF radius (a = 2.28 A),23 because the small lithium ion can penetrate into the borate anions down to Li-O contact.…”

Section: + a [C A]°amentioning

confidence: 99%

A New Class of Electrochemically and Thermally Stable Lithium Salts for Lithium Battery Electrolytes: II. Conductivity of Lithium Organoborates in Dimethoxyethane and Propylene Carbonate

Barthel

Buestrich

Carl

et al. 1996

J. Electrochem. Soc.

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A conductivity study is carried out on lithium bis[1,2 benzenediolato (2-)-O,O']borate and on lithium bis[3-fluoro-1,2benzenediolato(2-)-O,O']borate in dimethoxyethane and propylene carbonate from infinite dilution to saturation in the temperature range 228 .c T (K) <308. The electron-thawing fluorine substituent produces a decrease of the association constant by a factor of about three for PC-based solutions and 5.5 for solutions in dimethoyxyethane. The increase in the maximum of conductivity by about 30% (propylene carbonate) and about 80% (dimethoxyethane), independent of temperature, reveals the effect of ion-ion interaction on the conductivity maximum, with the solvent permittivity, viscosity, and ionic radii remaining unchanged. Synthesis, analysis, and purification of lithium bis[3-fluoro-1,2-benzenediolato(2-)O,O'Jborate, which is a candidate for lithium batteries, is described.

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“…The manufacture of low-temperature electrolytes is usually made by mixing salt and low-freezing point organic solvents (the physical properties of organic solvents are presented in table 2) directly together [57][58][59][60]. As a result, the produced electrolytes can be used at low temperatures while maximizing their viscosity, which allows for good conductivity [61].…”

Section: Design Strategy For Low-temperature Organic Electrolytesmentioning

confidence: 99%

Low-temperature electrolytes for electrochemical energy storage devices: bulk and interfacial properties

Yang,

Chen,

et al. 2023

Flex. Print. Electron.

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The optimization of electrochemical energy storage devices (EES) for low-temperature conditions is crucial in light of the growing demand for convenient living in such environments. Sluggish ion transport or the freezing of electrolytes at the electrode-electrolyte interface are the primary factors that limit the performance of EES under low temperatures, leading to fading of capacity and instability in device performance. This review provides a comprehensive overview of antifreeze strategies for various electrolytes (including aqueous electrolytes, organic electrolytes, and ionic liquids), and optimization methods for ion transport at the electrolyte-electrode. Additionally, the main challenges and forward-looking views are highlighted on the design and development of low-temperature electrolytes and EES devices.

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Non-Aqueous Electrolyte Solutions in Chemistry and Modern Technology

Cited by 13 publications

References 135 publications

A New Class of Electrochemically and Thermally Stable Lithium Salts for Lithium Battery Electrolytes. V. Synthesis and Properties of Lithium Bis[2,3-pyridinediolato(2−)-O,Oʹ]borate

A New Class of Electrochemically and Thermally Stable Lithium Salts for Lithium Battery Electrolytes. V. Synthesis and Properties of Lithium Bis[2,3-pyridinediolato(2−)-O,Oʹ]borate

A New Class of Electrochemically and Thermally Stable Lithium Salts for Lithium Battery Electrolytes: II. Conductivity of Lithium Organoborates in Dimethoxyethane and Propylene Carbonate

Low-temperature electrolytes for electrochemical energy storage devices: bulk and interfacial properties

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