US4808499A
Expired / Lapsed
US
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Lithium secondary battery
Assignee: Maxell Ltd
•
Filing: 1987-09-16
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Granted: 1989-02-28
•
Expires: 2007-09-16
Abstract
Abstract In a lithium secondary battery having lithium ion electrical conductive electrolyte, a positive electrode and a negative electrode, the negative electrode being formed by a Li-Ga-In alloy.
Inventors
- 👤 Ryo Nagai
- 👤 Kazumi Yoshimitu
- 👤 Kozo Kajita
- 👤 Noboru Odani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:38
CPC Classifications
C; C22; C22C; C22C28/00; C22C24/00; C22C30/00; H; H01; H01M; H01M10/00; H01M10/36; H01M4/00; H01M4/02; H01M4/36; H01M4/38; H01M4/40; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
81 words
A lithium secondary battery having a lithium ion electrical conductive electrolyte, a positive electrode, positive electrode activating material and a negative electrode comprising solid Li-Ga-In alloy wherein the composition of Li-Ga-In alloy for the negative electrode is defined by the area surrounded by E(Li 65%, Ga 30% and In 5%), F(Li 35%, Ga 60% and In 5%), G(Li 35%, Ga 35% and In 30%) and H(Li 65%, Ga 12% and In 23%) on the triangular coordinate as shown in FIG. 2.
Claim 2
Dependent Claim
81 words
A lithium secondary battery having a lithium ion electrical conductive electrolyte, a positive electrode, positive electrode activating material and a negative electrode comprising solid Li-Ga-In alloy wherein the composition of Li-Ga-In alloy for the negative electrode is defined by the area surrounded by E(Li 65%, Ga 30% and In 5%), F(Li 35%, Ga 60% and In 5%), G(Li 35%, Ga 35% and In 30%) and H(Li 65%, Ga 12% and In 23%) on the triangular coordinate as shown in FIG. 2.
Claim 3
Dependent Claim
29 words
The lithium secondary battery according to claim 1 wherein the negative electrode is formed by mixture of Li-Ga-In alloy powder and lithium powder and shaped by pressing the mixture.
Claim 4
Dependent Claim
31 words
The lithium secondary battery according to claim 1 wherein the negative electrode is made of a porous metal in which Li-Ga-In alloy powder is filled in pores of the porous metal.
Claim 5
Dependent Claim
36 words
The lithium secondary battery according to claim 1, wherein the negative electrode is made of a porous member in which mixture of Li-Ga-In alloy powder and lithium powder are filled in the pores of porous metal.
Claim 6
Dependent Claim
14 words
The lithium secondary battery according to claim 3, wherein said porous metal is nickel.
Claim 7
Dependent Claim
22 words
The lithium secondary battery according to claim 1, wherein said positive electrode activate material is made of calcogen compound of transition metal.
Claim 8
Dependent Claim
19 words
The lithium secondary battery according to claim 6, wherein said positive electrode active material is made of titanium sulfide.
Claim 9
Dependent Claim
14 words
The lithium secondary battery according to claim 4, wherein said porous metal is nickel.
Claim 10
Dependent Claim
22 words
The lithium secondary battery according to claim 4, wherein said positive electrode activate material is made of calcogen compound of transition metal.
Claim 11
Dependent Claim
22 words
The lithium secondary battery according to claim 5, wherein said positive electrode activate material is made of calcogen compound of transition metal.
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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) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |