US5324599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible electrode material
Assignee: Panasonic Holdings Corp
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Filing: 1992-01-27
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Granted: 1994-06-28
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Expires: 2012-01-27
Abstract
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 π electron conjugated conductive polymer; or a composition containing as its main component a π 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.
Inventors
- 👤 Noboru Oyama
- 👤 Katsuhiko Naoi
- 👤 Tadashi Sotomura
- 👤 Hiroshi Uemachi
- 👤 Yoshiko Sato
- 👤 Teruhisa Kanbara
- 👤 Kenichi Takeyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 22:47
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; H01M10/056; H01M10/0564; H01M10/0565; H01M4/00; H01M4/02; H01M4/36; H01M4/60; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
126 words
A lithium secondary battery comprising a cathode, a solid electrolyte, and an anode, wherein the cathode is made of (a) a composition containing as its main components lithium thiolate having a sulfur-lithium ion bond capable of forming a disulfide bond by electrolytic oxidation and a π electron conjugated conductive polymer, or (b) a composition containing as its main component a π electron conjugated conductive polymer having a sulfur-lithium ion bond capable of forming a disulfide bond by electrolytic oxidation; wherein the solid electrolyte is made of a composition containing as its main component a salt containing lithium, or polymer containing a salt containing lithium; and wherein the anode is made of a composition containing as its main components aluminium or an alloy containing aluminium, and carbon.
Claim 2
Dependent Claim
126 words
A lithium secondary battery comprising a cathode, a solid electrolyte, and an anode, wherein the cathode is made of (a) a composition containing as its main components lithium thiolate having a sulfur-lithium ion bond capable of forming a disulfide bond by electrolytic oxidation and a π electron conjugated conductive polymer, or (b) a composition containing as its main component a π electron conjugated conductive polymer having a sulfur-lithium ion bond capable of forming a disulfide bond by electrolytic oxidation; wherein the solid electrolyte is made of a composition containing as its main component a salt containing lithium, or polymer containing a salt containing lithium; and wherein the anode is made of a composition containing as its main components aluminium or an alloy containing aluminium, and carbon.
Claim 3
Dependent Claim
25 words
A lithium secondary battery according to claim 1, wherein the electrolyte is mixed with a composition forming the cathode or a composition forming the anode.
Claim 4
Dependent Claim
57 words
A lithium secondary battery according to claim 1, wherein the solid electrolyte comprises a polyether obtained by adding at least one selected from the group consisting of ethylene oxide and propylene oxide to a polyamide; an ion-exchangeable compound having a layered crystal structure; and a lithium salt represented by LiX (wherein X is a strong acid anion).
Claim 5
Dependent Claim
72 words
An electrode material for reversibly performing electrolytic reduction and electrolytic oxidation, comprising (a) a combination of an organic compound having a disulfide group and a conductive polymer, or (b) a conductive polymer having a main chain, said conductive polymer comprising a disulfide group which is not a part of said main chain, wherein an S-S bond of the disulfide group is cleaved by the electrolytic reduction and re-formed by the electrolytic oxidation.
Claim 6
Dependent Claim
72 words
An electrode material for reversibly performing electrolytic reduction and electrolytic oxidation, comprising (a) a combination of an organic compound having a disulfide group and a conductive polymer, or (b) a conductive polymer having a main chain, said conductive polymer comprising a disulfide group which is not a part of said main chain, wherein an S-S bond of the disulfide group is cleaved by the electrolytic reduction and re-formed by the electrolytic oxidation.
Claim 7
Dependent Claim
39 words
An electrode material according to claim 4, which comprises a combination of an organic compound having a disulfide group and a conductive polymer, wherein the organic compound having a disulfide group has a cleavable disulfide bond in its molecule.
Claim 8
Dependent Claim
28 words
An electrode material according claim 4, wherein the conductive polymer having a disulfide group is obtained by introducing a disulfide group into a π electron conjugated conductive polymer.
Claim 9
Dependent Claim
39 words
An electrode material according to claim 4, wherein the conductive polymer having a disulfide group is obtained by electrolytic polymerization of a monomer which has a disulfide group and is capable of forming a π electron conjugated conductive polymer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-06-27 | 1997-12-27 | 1998-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-27 | 2001-12-27 | 2002-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-27 | 2005-12-27 | 2006-06-28 | $7700.00 | Window Closed / Lapsed |