Lithium secondary battery

Details Lithium secondary battery Lithium secondary battery

2001-02-21

2003-09-02

Kalafut, Stephen (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S218100, C205S059000, C252S182100

Reexamination Certificate

active

06613477

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a lithium secondary battery having a positive electrode, a negative electrode and a non-aqueous electrolyte.
BACKGROUND OF THE INVENTION
A secondary battery, especially, a lithium secondary battery has lately been attracting attention as an operating power source for portable electronic equipment that can be miniaturized, is highly efficient and is cordless. A lithium secondary battery contains a positive electrode having a positive electrode active material, a negative electrode having a negative electrode active material and a non-aqueous electrolyte.
The most common and practical lithium secondary battery has a carbon material, for example, graphite or the like, as a negative electrode active material, and crystalline LiCoO
2
as a positive electrode active material. A lithium secondary battery having a high voltage, i.e., 4V, and high energy density can be provided because crystalline LiCoO
2
has a high voltage level.
However, reduction of consumption of power has been recently required for electronic equipment. Operating voltages of electric circuits have been gradually reduced. Therefore, a lithium battery having high discharge capacity density is required more than one having a high discharge voltage.
OBJECT OF THE INVENTION
An object of the present invention is to provide a lithium secondary battery which has higher capacity density per volume and per weight.
SUMMARY OF THE INVENTION
The present invention provides a lithium secondary battery having positive and negative electrodes and a non-aqueous electrolyte, wherein the positive electrode contains Li—Bi alloy or Li—Sb alloy as an active material.


REFERENCES:
patent: 4645726 (1987-02-01), Hiratani et al.
patent: RE35818 (1998-06-01), Tahara et al.
patent: 6322930 (2001-11-01), Yoshimura et al.
patent: 62-223969 (1987-01-01), None
patent: 63-166166 (1988-07-01), None
patent: 6-168721 (1994-06-01), None
patent: 11-54117 (1999-02-01), None
Besenhard, J. O. et al.; “Reversibles Elektrochemisches Legieren von Metallen der V. Hauptgruppe in Organischen Li+-Lösungen”;Electrochimica Acta; vol. 20, pp. 513-517; 1975, No Month available.
Chemical Abstracts, No. 83(18)154522x; “Reversible Electrochemical Alloying of Group V Metals in Orgaic Solutions Containing Lithium (1+)”, No date available.
Demidov, A. I. et al.; “Alloy Formation During Lithium Deposition on Antimony and Bismuth Cathodes”;Elektrokhimiya; vol. 19, pp. 1695-1699; 1983, No month available.
Chemical Abstracts, No. 100(8)58704g; “Alloy Formation During Lithium Deposition on Antimony Bismuth Cathodes”, No date available.
Wang, J. et al.; “Behavior of Some Binary Lithium Alloys as Negative Electrodes in Organic Solvent-Based Electrolytes”;Journal of the ElectrochemicalSociety: Electrochemical Science and Technology; vol. 133, No. 3, pp. 457-460; Mar. 1986.

Affiliated with

Also associated with

Rating

Lithium secondary battery does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lithium secondary battery, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lithium secondary battery will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3107823