US4820599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-aqueous electrolyte type secondary cell
Assignee: Sanyo Electric Co Ltd
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Filing: 1988-05-17
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Granted: 1989-04-11
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Expires: 2008-05-17
Abstract
Abstract A rechargeable non-aqueous secondary cell comprises, as main components thereof, a positive electrode, a negative electrode, a separator disposed between the positive electrode and negative electrode, and a non-aqueous electrolyte. The positive electrode includes a rechargeable active material, and the negative electrode is formed of lithium-aluminum alloy and has an aluminum plate added with manganese as a base material.
Inventors
- 👤 Nobuhiro Furukawa
- 👤 Toshihiko Saito
- 👤 Ikuro Nakane
- 👤 Hiroshi Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:29
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/13; H01M4/131; H01M10/00; H01M10/05; H01M10/052; H01M4/04; H01M4/0438; H01M4/0459; H01M4/0461; H01M4/36; H01M4/38; H01M4/40; H01M4/48; H01M4/485; H01M4/50; H01M4/505; H01M2004/026; H01M2004/027; H01M2300/00; H01M2300/0017; H01M2300/0025; H01M4/405; H01M4/46; H01M4/463; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
51 words
A rechargeable non-aqueous secondary cell comprising; a positive electrode having a rechargeable active material as a main component, a negative electrode formed of lithium-aluminum alloy and having an aluminum plate added with manganese as a base, a separator disposed between said positive electrode and said negative electrode, and a non-aqueous electrolyte.
Claim 2
Dependent Claim
51 words
A rechargeable non-aqueous secondary cell comprising; a positive electrode having a rechargeable active material as a main component, a negative electrode formed of lithium-aluminum alloy and having an aluminum plate added with manganese as a base, a separator disposed between said positive electrode and said negative electrode, and a non-aqueous electrolyte.
Claim 3
Dependent Claim
21 words
A cell as claimed in claim 1 wherein manganese is added in 0.1 to 6.0 wt. % with respect to aluminum.
Claim 4
Dependent Claim
19 words
A cell as claimed in claim 1 wherein the active material for the positive electrode comprises a manganese oxide.
Claim 5
Dependent Claim
48 words
A cell as claimed in claim 3 wherein said manganese oxide is selected from the group consisting of manganese dioxide, a manganese oxide including lithium or other metals, Li 2 MnO 3 , manganese dioxide including Li 2 MnO 3 , spinel type Li 2 MnO 4 .
Claim 6
Dependent Claim
26 words
A cell as claimed in claim 1 further comprising a negative can, and a negative collector secured to a bottom inside surface of said negative can.
Claim 7
Dependent Claim
17 words
A cell as claimed in claim 5 wherein said negative electrode is pressed upon said negative collector.
Claim 8
Dependent Claim
26 words
A cell as claimed in claim 1 further comprising a positive can, and a positive collector secured to a bottom inside surface of said positive can.
Claim 9
Dependent Claim
17 words
A cell as claimed in claim 7 wherein said positive electrode is pressed upon said positive collector.
Claim 10
Dependent Claim
15 words
A cell as claimed in claim 1 wherein said separator comprises a porous polypropylene membrane.
Claim 11
Dependent Claim
28 words
A cell as claimed in claim 1 wherein said nonaqueous electrolyte comprises a liquid mixture having lithium perchlorate dissolved in a solvent mixture of propylene carbonate and 1,2-dimethoxyethane.
Claim 12
Dependent Claim
50 words
A rechargeable non-aqueous secondary cell comprising; a positive electrode having a rechargeable active material as a main component, a negative electrode formed of lithium-aluminum alloy including manganese in solid solution phases and/or MnAl 6 , a separator disposed between said positive electrode and said negative electrode, and a non-aqueous electrolyte.
Claim 13
Dependent Claim
50 words
A rechargeable non-aqueous secondary cell comprising; a positive electrode having a rechargeable active material as a main component, a negative electrode formed of lithium-aluminum alloy including manganese in solid solution phases and/or MnAl 6 , a separator disposed between said positive electrode and said negative electrode, and a non-aqueous electrolyte.
Claim 14
Dependent Claim
21 words
A cell as claimed in claim 11 wherein manganese is added in 0.1 to 6.0 wt. % with respect to aluminum.
Claim 15
Dependent Claim
19 words
A cell as claimed in claim 11 wherein the active material for the positive electrode comprises a manganese oxide.
Claim 16
Dependent Claim
48 words
A cell as claimed in claim 13 wherein said manganese oxide is selected from the group consisting of manganese dioxide, a manganese oxide including lithium or other metals, Li 2 MnO 3 , manganese dioxide including Li 2 MnO 3 , spinel type Li 2 MnO 4 .
Claim 17
Dependent Claim
26 words
A cell as claimed in claim 11 further comprising a negative can, and a negative collector secured to a bottom inside surface of said negative can.
Claim 18
Dependent Claim
17 words
A cell as claimed in claim 15 wherein said negative electrode is pressed upon said negative collector.
Claim 19
Dependent Claim
26 words
A cell as claimed in claim 11 further comprising a positive can, and a positive collector secured to a bottom inside surface of said positive can.
Claim 20
Dependent Claim
17 words
A cell as claimed in claim 17 wherein said positive electrode is pressed upon said positive collector.
Claim 21
Dependent Claim
15 words
A cell as claimed in claim 11 wherein said separator comprises a porous polypropylene membrane.
Claim 22
Dependent Claim
28 words
A cell as claimed in claim 11 wherein said nonaqueous electrolyte comprises a liquid mixture having lithium perchlorate dissolved in a solvent mixture of propylene carbonate and 1,2-dimethoxyethane.
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) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |