A new class of electrochemically and thermally stable lithium salts for lithium battery electrolytes. 2: Conductivity of lithium organoborates in dimethoxyethane and propylene carbonate
Journal Article
·
· Journal of the Electrochemical Society
- Univ. Regensburg (Germany). Inst. fuer Theoretische und Physikalische Chemie
A conductivity study is carried out on lithium bis[1,2 benzenediolato (2-)-O,O{prime}]borate and on lithium bis[3-fluoro-1,2-benzenediolato(2-)-O,O{prime}]borate in dimethoxyethane and propylene carbonate from infinite dilution to saturation in the temperature range 228 < T (K) < 308. The electron-drawing 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 dimethoxyethane. 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{prime}]borate, which is a candidate for lithium batteries, is described.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 428165
- Journal Information:
- Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 11 Vol. 143; ISSN 0013-4651; ISSN JESOAN
- Country of Publication:
- United States
- Language:
- English
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Tue Aug 01 00:00:00 EDT 1995
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