US6319633B1
Expired / Lapsed
US
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Rechargeable lithium battery
Assignee: Sanyo Electric Co Ltd
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Filing: 2000-02-14
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Granted: 2001-11-20
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Expires: 2020-02-14
Abstract
Abstract A rechargeable lithium battery has a positive electrode, a negative electrode and a non-aqueous electrolyte. The active material of the positive or negative electrode is tungsten complex sulfide, either with or without addition of lithium thereto. The tungsten complex sulfide contains tungsten, sulfur and at least one transition metal selected from Cu, V, Cr, Mn, Fe, Co and Ni, and has substantially the same crystal structure as WS 2 .
Inventors
- 👤 Hiroaki Ikeda
- 👤 Masahisa Fujimoto
- 👤 Shin Fujitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:01
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/581; H01M4/13; H01M4/136; H01M4/362; H01M4/364; H01M4/5815; H01M10/00; H01M10/05; H01M10/052; H01M10/0525; H01M2004/021; H01M4/04; H01M4/0471; H01M4/48; H01M4/485; H01M4/583; H01M4/587; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
89 words
A rechargeable lithium battery comprising a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein at least one of said electrodes comprises a first active material comprising a tungsten complex sulfide, wherein said tungsten complex sulfide is represented by the formula M x W 1-x S 2 where M is at least one element selected from Cu, V, Cr, Mn, Fe, Co and Ni, and x satisfies the relationship 0<x<0.48, and wherein said tungsten complex sulfide has substantially the same crystal structure as WS 2 in X-ray diffractometry.
Claim 2
Dependent Claim
89 words
A rechargeable lithium battery comprising a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein at least one of said electrodes comprises a first active material comprising a tungsten complex sulfide, wherein said tungsten complex sulfide is represented by the formula M x W 1-x S 2 where M is at least one element selected from Cu, V, Cr, Mn, Fe, Co and Ni, and x satisfies the relationship 0<x<0.48, and wherein said tungsten complex sulfide has substantially the same crystal structure as WS 2 in X-ray diffractometry.
Claim 3
Dependent Claim
23 words
The rechargeable lithium battery according to claim 1 , wherein said first active material further comprises lithium added to said tungsten complex sulfide.
Claim 4
Dependent Claim
24 words
The rechargeable lithium battery according to claim 1 , wherein said first active material does not comprise lithium added to said tungsten complex sulfide.
Claim 5
Dependent Claim
32 words
The rechargeable lithium battery according to claim 1 , wherein said positive electrode comprises said first active material, and wherein said negative electrode comprises a second active material comprising a carbon material.
Claim 6
Dependent Claim
22 words
The rechargeable lithium battery according to claim 4 , wherein said second active material further comprises lithium added to said carbon material.
Claim 7
Dependent Claim
23 words
The rechargeable lithium battery according to claim 4 , wherein said second active material does not comprise lithium added to said carbon material.
Claim 8
Dependent Claim
34 words
The rechargeable lithium battery according to claim 1 , wherein said negative electrode comprises said first active material, and wherein said positive electrode comprises a second active material comprising a lithium-containing transition metal oxide.
Claim 9
Dependent Claim
42 words
The rechargeable lithium battery according to claim 1 , wherein said tungsten complex sulfide has been synthesized by calcining a material mixture containing constituent elements of said tungsten complex sulfide at a temperature in a range from 400° C. to 1800° C.
Claim 10
Dependent Claim
60 words
The rechargeable lithium battery according to claim 1 , wherein said tungsten complex sulfide has a crystal structure identical to a crystal structure of said WS 2 as shown by X-ray diffractometry except for the substitution of said M for a part of said W at respective sites of said W in said crystal structure of said WS 2 .
Claim 11
Dependent Claim
65 words
An electrode material for use in rechargeable lithium batteries, comprising a tungsten complex sulfide represented by the formula M x W 1-x S 2 where M is at least one element selected from Cu, V, Cr, Mn, Fe, Co and Ni, and x satisfies the relationship 0<x<0.48, and wherein said tungsten complex sulfide has substantially the same crystal structure as WS 2 in X-ray diffractometry.
Claim 12
Dependent Claim
65 words
An electrode material for use in rechargeable lithium batteries, comprising a tungsten complex sulfide represented by the formula M x W 1-x S 2 where M is at least one element selected from Cu, V, Cr, Mn, Fe, Co and Ni, and x satisfies the relationship 0<x<0.48, and wherein said tungsten complex sulfide has substantially the same crystal structure as WS 2 in X-ray diffractometry.
Claim 13
Dependent Claim
17 words
The electrode material according to claim 10 , further comprising lithium added to said tungsten complex sulfide.
Claim 14
Dependent Claim
22 words
The electrode material according to claim 10 , wherein said electrode material does not comprise lithium added to said tungsten complex sulfide.
Claim 15
Dependent Claim
59 words
The electrode material according to claim 10 , wherein said tungsten complex sulfide has a crystal structure identical to a crystal structure of said WS 2 as shown by X-ray diffractometry except for the substitution of said M for a part of said W at respective sites of said W in said crystal structure of said WS 2 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-11-19 | 2005-05-21 | 2005-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-11-19 | 2009-05-21 | 2009-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-11-19 | 2013-05-21 | 2013-11-20 | $7700.00 | Window Closed / Lapsed |