Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Patent
1992-01-27
1994-06-28
Maples, John S.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
429213, 2521821, 525417, 525540, H01M 460, H01M 618
Patent
active
053245997
ABSTRACT:
The present invention provides an electrode material comprising a combination of a compound having a disulfide group and a conductive polymer, or a conductive polymer having a disulfide group, wherein an S-S bond of the disulfide group is cleaved by the electrolytic reduction to form a sulfur-metal ion bond or a sulfur-proton bond, and the sulfur-metal ion bond or the sulfur-proton bond re-forms an S-S bond by the electrolytic oxidation. The present invention also provides a lithium rechargeable battery comprising a cathode, a solid electrolyte, and an anode, wherein the cathode is made of a composition containing as its main components lithium thiolate having a sulfur-lithium ion bond capable of forming a disulfide bond by the electrolytic oxidation and a .pi. electron conjugated conductive polymer; or a composition containing as its main component a .pi. electron conjugated conductive polymer having a sulfur-lithium ion bond capable of forming a disulfide bond by electrolytic oxidation; the solid electrolyte is a composition containing a salt containing lithium, or a polymer containing the salt; and the anode is made of a composition containing as its main components aluminium or an alloy containing aluminium, and carbon.
REFERENCES:
patent: 4833048 (1989-05-01), Dejorghe et al.
patent: 5158578 (1992-10-01), Yoshimoto et al.
Meilin Liu et al, "Electrochemical Investigations of Novel Solid Redox Polymerization Electrodes", Proceedings of the Symposium on Rechargeable Lithium Batteries, (no date) The Electrochemical Society, Inc., Pennington, New Jersey, Proceedings vol. 90-5, pp. 233-243 (date unknown).
European search report for corresponding application 92101458.5, dated Dec. 4, 1992.
"New Organodisulfide-Polyaniline Composite Cathode for Secondary Lithium Battery", by T. Sotomura (no date).
"An Enhanced Redox Process of Disulfide Compounds @ Polyaniline Film Electrode" by K. Naoi--Manuscript Sub. to J. Elect. Composite (no date).
"Novel Solid Redox Polymerization Electrodes" by M. Liu et al. J. Electrochem. Soc. vol. 138, No. 7, Jul. 1991, pp. 1896-1901.
"Electrochemical Prop. of Organic Disulfide/Thiolate Redox Couples" J. of Elect. Soc. vol. 136, No. 9, Sep. 1989, pp. 2570-2575 (w/cited in the Engl. Text).
Kanbara Teruhisa
Naoi Katsuhiko
Oyama Noboru
Sato Yoshiko
Sotomura Tadashi
Maples John S.
Matsushita Electric - Industrial Co., Ltd.
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