Non-aqueous electrolyte and electrochemical device...

Details Non-aqueous electrolyte and electrochemical device... Non-aqueous electrolyte and electrochemical device...

2005-06-28

2005-06-28

Crepeau, Jonathan (Department: 1746)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

C429S201000, C361S502000, C361S505000, C252S062200

Reexamination Certificate

active

06911281

ABSTRACT:
A non-aqueous electrolyte is disclosed, which comprises a non-aqueous solvent and a solute represented by the general formula(1): MBR1R2R3R4, wherein M is an alkali metal atom or an ammonium group and R1to R4are each independently electron withdrawing groups or electron withdrawing atoms bound to B where at least one of R1to R4is other than a fluorine atom. The solute has a thermal stability substantially equal to that of LiBF4and an anion portion having a high electronegativity, and easily dissociates into ions. Therefore, a non-aqueous electrolyte containing this solute has a high ionic conductivity and is difficult to cause a generation of a gas or deterioration in characteristics due to the decomposition of the solute, which occurs during use at high temperatures or after storage at high temperatures.

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Brauer et al., “Electrochemical and Ozone Oxidation of (CF3)3B ·NH3: Formation and Characterization of Products with Nondegradated (CF3)3B Groups ”,Eur. J. Inorg. Chem.pp. 247-253 (1999).

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