A new class of electrochemically and thermally stable lithium salts for lithium battery electrolytes. 5. Synthesis and properties of lithium bis[2,3-pyridinediolato(2-)-O,O{prime}]borate
Synthesis, analysis, and purification of lithium bis[2,3-pyridinediolato(2-)-O,O{prime}]borate (LBPB), is described, LBPB is the first lithium spiroborate known with a heterocycle, where the nitrogen works as an electron withdrawing atom. The anodic oxidation limit of this salt as determined from cyclic voltammetric measurements is 3.95 V vs. Li/Li{sup +} and it is increased by about 0.35 V when compared with lithium bis[1,2-benzenediolato(2-)-O,O{prime}]borate. The gas phase energy of the highest occupied molecular orbital of the anion as obtained by the use of a semiempirical quantum mechanical method is {minus}5.1 eV. No corrosion of aluminum is observed with this salt, which shows good protecting properties for the lithium electrode; therefore, this electrolyte may be suitable as an additive.
- Research Organization:
- Inst. fur Theoretische and Physikalische Chemie der Univ. Regensburg (DE)
- OSTI ID:
- 20014479
- Journal Information:
- Journal of the Electrochemical Society, Vol. 147, Issue 1; Other Information: PBD: Jan 2000; ISSN 0013-4651
- Country of Publication:
- United States
- Language:
- English
Similar Records
A new class of electrochemically and thermally stable lithium salts for lithium battery electrolytes. 3: Synthesis and properties of some lithium organoborates
Lithium bis[5-fluoro-2-olato-1-benzenesulfonato(2-)-O,O{prime}]borate(1-), a new anodically and cathodically stable salt for electrolytes of lithium-ion cells