Electrolyte having a polymer and battery using it

Details Electrolyte having a polymer and battery using it Electrolyte having a polymer and battery using it

2004-03-02

2009-12-15

Alejandro, Raymond (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

C429S324000, C429S326000

Reexamination Certificate

active

07632606

ABSTRACT:
An electrolyte whose battery capacity, cycle characteristics, load characteristics, and low temperature characteristics are all excellent, and a battery using it. A cathode and an anode are layered and wound with a separator and electrolyte layer in between. The electrolyte layer contains an electrolytic solution containing at least one from the group consisting of vinylethylene carbonate and its derivatives in the range of 0.05 wt % to 5 wt % in total and a polymer. Therefore, chemical stability of the electrolyte layer is improved. It is preferable that the electrolytic solution further contains ethylene carbonate and propylene carbonate with a mass ratio of ethylene carbonate to propylene carbonate ranging from about 15/85 to about 75/25.

REFERENCES:
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patent: 7393476 (2008-07-01), Shiozaki et al.
patent: 2004/0048165 (2004-03-01), Coowar
patent: 2005/0181283 (2005-08-01), Pugh et al.
patent: 2006/0014078 (2006-01-01), Swoyer et al.
patent: 2001-057234 (2001-02-01), None
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patent: 2001-167797 (2001-06-01), None
patent: 2002-015771 (2002-01-01), None
patent: 2002-324580 (2002-11-01), None
patent: 2003-100299 (2003-04-01), None
Japanese Office Action dated Dec. 8, 2006.

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