Lithium polymer cell

Details Lithium polymer cell Lithium polymer cell

2005-05-17

2005-05-17

Weiner, Laura (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

C429S332000, C429S254000, C429S342000

Reexamination Certificate

active

06893778

ABSTRACT:
In a lithium polymer battery of the present invention, a positive electrode, an negative electrode and a separator respectively contain a vinylidene fluoride-hexafluoropropylene copolymer, an electrolyte contains a solvent comprising diethyl carbonate and a solute dissolved in the solvent, and the electrolyte further contains diphenyl ether as an additive.With the use of the above electrolyte, it is possible to improve the thermal stability of the battery containing P(VDF-HFP) in the positive electrode, the negative electrode and the separator and to operate the shutdown function surely, thereby ensuring the excellent safety of the battery.

REFERENCES:
patent: 6503661 (2003-01-01), Park et al.
patent: 20020192565 (2002-12-01), Ueda et al.
patent: 2000-058117 (2000-02-01), None

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