Non-aqueous secondary battery having enhanced discharge...

Details Non-aqueous secondary battery having enhanced discharge... Non-aqueous secondary battery having enhanced discharge...

2005-03-15

2005-03-15

Ruthkosky, Mark (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

C429S327000, C429S336000

Reexamination Certificate

active

06866966

ABSTRACT:
A discharge capacity retention of a non-aqueous secondary battery is enhanced by incorporating into its non-aqueous electrolytic solution a small amount of a substituted diphenyldisulfide derivative in which each of the diphenyl groups has a substituent such as alkoxy, alkenyloxy, alkynyloxy, cycloalkyloxy, aryloxy, acyloxy, alkanesulfonyloxy, arylsulfonyloxy, alkoxycarbonyloxy, aryloxycarbonyloxy, halogen, CF3, CCl3, or CBr3. Preferably, a small amount of methyl 2-propylcarbonate, 2-propynyl methanesulfonate, 1,3-propanesultone, divinylsulfone, 1,4-butanediol dimethanesulfonate or cyclohexylbenzene is further incorporated.

REFERENCES:
patent: 4888255 (1989-12-01), Yoshimitsu et al.
patent: 5340670 (1994-08-01), Takami et al.
patent: 5998670 (1999-12-01), Tang et al.
patent: 1199766 (2002-04-01), None
patent: 1304758 (2003-04-01), None
patent: 3444243 (2001-02-01), None

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