Propylene carbonate based electrolyte for lithium ion electrochemical cell

Patent 5780182 Issued on July 14, 1998. Estimated Expiration Date:

November 4, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Electrolyte solution sequestering agents for electrochemical cells having carbonaceous electrodes
Patent #: 5130211
Issued on: 07/14/1992
Inventor: Wilkinson, et al.

Elecrolyte for a secondary cell
Patent #: 5529859
Issued on: 06/25/1996
Inventor: Shu, et al.

Electrolyte for a secondary cell Patent #: 5571635
Issued on: 11/05/1996
Inventor: Shu, et al.

Inventors

Assignee

Valence Technology, Inc.

Application

No. 742398 filed on 11/04/1996

US Classes:

429/331, Plural cyclic carbonate solvents29/623.1, Electric battery cell making429/200, Hydrogen containing429/231.8Carbon, graphite, or carbonaceous component is active material

Examiners

Primary: Kalafut, Stephen

Attorney, Agent or Firm

Jew; Charles

International Class

H01M 010/40

Abstract

Non-aqueous solid electrochemical cells with improved performance can be fabricated by employing intercalation based carbon anodes comprising graphite, coke, or mixtures thereof, and an electrolyte having an electrolyte solvent formed of propylene carbonate and 4,5-dichloroethylene carbonate. The cells are particularly suited for low temperature applications.

Other References

Aurbach, D., et al, "The Correlation Between the Surface Chemistry and the Performance of Li-Carbon Intercalation Anodes for Rechargeable Rocking-Chair Type Batteries", J. Electrochem. Soc., vol. 141, No. 3, pp. 603-611, (1994) (Mar.)
Dey, A.N., et al., "The Electrochemical Decompostion of Propylene Carbonate on Graphite", J. Electrochem. Soc.: Electrochemical Science, vol. 117, No. 2, pp. 222-224, (1970) (Feb.)
Kuribayashi, I., et al., "Battery Characteristics with Various Carbonaceous Materials", Journal of Power Sources, 54, pp. 1-5 (1995) (month unknown)
Shu, Z.X., et al., "Electrochemical Intercalation of Lithium into Graphite", J. Electrochem. Soc., vol. 140, No. 4, pp. 922-927 (1993) (Apr.)
Shu, Z.X., et al., "Effect of 12 Crown 4 on the Electrochemical Intercalation of Lithium into Grpahite", J. Electrochem. Soc., vol. 140, No. 6, pp. L101-L103 (1993) (Jun.)
Shu, Z.X., et al., "Use of Chloroethylene Carbonate as an Electrolyte Solvent for a Lithium Ion Battery Containing a Graphitic Anode", J. Electrochem. Soc., vol. 142, No. 9, pp. L161-L162 (1995) (Sep.)
Su, Z.X., et al., "Use of Chloroethylene Carbonate as an Electrolyte Solvent for a Graphite Anode in a Lithium-Ion Battery", J. Electrochem. Soc., vol. 143, No. 7, pp. 2230-2235, (1996) (Jul.