Another new patent for Valence:
United States Patent 5,843,592
Barker, et. al. Dec. 1, 1998
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Current collector for lithium ion electrochemical cell
Abstract
Electrochemical cells having a current collector that includes a redox polymer film affords overdischarge protection. The redox polymers can reversibly insert anions and/or cations during oxidation and/or reduction thereby rendering the polymers conductive relatively to their neutral state.
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Inventors: Barker; Jeremy (Henderson, NV); Koksbang; Rene (Odense S, DK).
Assignee: Valence Technology, Inc. (Henderson, NV).
Appl. No.: 735,756
Filed: Oct. 23, 1996
Intl. Cl. : H01M 10/44
Current U.S. Cl.: 429/50; 429/192
Field of Search: 429/192, 209, 245, 212, 50, 194; 29/623.1
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References Cited | [Referenced By]
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U.S. Patent Documents
4,222,903 Sept., 1980 Heeger et al.
4,579,679 Apr., 1986 Papir
4,804,594 Feb., 1989 Jow et al.
5,028,500 Jul., 1991 Fong et al. 429/194
5,256,730 Oct., 1993 Gan et al.
5,262,254 Nov., 1993 Koksbang et al. 429/192
5,326,653 Jul., 1994 Chang 429/162
5,368,959 Nov., 1994 Koksbang et al. 429/212
5,536,601 Jul., 1996 Koksbang et al. 429/192 X
5,554,460 Sept., 1996 Wu et al. 429/191 X
Other References
Liu et al., "Nucleophilic Substitution Reactions of Polyaniline with Substituted Benzenediazonium Ions: A Facile Method for Controlling the Surface Chemistry of Conducting Polymers", Chem. Mater., 1996, vol. 8, 1164-1166 (No Month).
Hanna et al., "Synthesis and Characterization of New Processible Conducting Copolymers Derived from Thiophenes", Chem. Mater., 1996, vol. 8, 1512-1518 (No Month).
Henderson et al., "Thiophene: Alkylthiophene Copolymers from Substituted Dialkyloligothiophenes", Chem. Mater., 1995, vol. 7, 1879-1889 (No Month).
J. Barker, "An Electrochemical Investigation of the Doping Process in Poly(thienylene vinylene)", Synthetic Metals, (1989), vol. 32, 43-50 (No Month).
Herbert Naarmann, "New Aspects on Intrinsically Conducting Organic Systems and Their Synthesis", Makromol. Chem., Macromol. Symp. (1987), vol. 8, 1-15 (No Month).
Jow et al, "A Rechargeable Cell Based on a Conductive Polymer/Metal Alloy Composite Electrode", J. Electrochem. Soc., (1989), vol. 136, 1-6 (No Month).
Primary Examiner: Skapars; Anthony
Attorney, Agent or Firm: Krebs; Robert
16 Claims, 2 Drawing Figures
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