Patent US4761352A successfully refreshed from Google Patents.
US4761352A
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Accordian folded electrode assembly
Assignee: Ultralife Corp
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Filing: 1985-05-17
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Granted: 1988-08-02
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Expires: 2005-05-17
Abstract
Abstract An electrode assembly of an anode, a cathode and insulating separator material between the cathode and the anode characterized in that the entire anode, the entire separator and the entire cathode are laminated together in an accordian fold is disclosed. The assembly is useful in electrochemical cells.
Inventors
- 👤 Vincent W. Bakos
- 👤 Thomas W. Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:15
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/04; H01M6/00; H01M6/04; H01M6/06; H01M6/10; H01M6/14; H01M6/16; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
127 words
An electrochemical cell having an electrolyte and an electrode assembly comprising a lithium anode, a MnO 2 cathode and an insulating separator material between the anode and cathode, wherein (a) the anode and the separator forms a three piece laminate comprising in the following order (i) a metal foil current collector support; (ii) a layer of lithium and (iii) a layer of an insulating separator material; (b) the anode is about twice the length of the cathode; (c) the anode is folded in half; (d) the cathode, comprising a metal foil current collector coated on both sides with MnO 2 , is sandwiched between the fold of the anode to form the electrode assembly; and (e) the entire electrode assembly is laminated together in an accordian fold.
Claim 2
Dependent Claim
127 words
An electrochemical cell having an electrolyte and an electrode assembly comprising a lithium anode, a MnO 2 cathode and an insulating separator material between the anode and cathode, wherein (a) the anode and the separator forms a three piece laminate comprising in the following order (i) a metal foil current collector support; (ii) a layer of lithium and (iii) a layer of an insulating separator material; (b) the anode is about twice the length of the cathode; (c) the anode is folded in half; (d) the cathode, comprising a metal foil current collector coated on both sides with MnO 2 , is sandwiched between the fold of the anode to form the electrode assembly; and (e) the entire electrode assembly is laminated together in an accordian fold.
Claim 3
Dependent Claim
95 words
An electrode assembly of an anode, a cathode and insulating separator material between the cathode and the anode wherein (a) the anode is about twice the length of the cathode, the anode is folded in half and the cathode is sandwiched between the fold of the anode and the entire assembly is accordian folded and (b) the anode and the separator is a three piece laminate comprising, in the following order, (i) a metal foil current collector support; (ii) a layer of a malleable anode-active material; and (iii) a layer of the insulating separator material.
Claim 4
Dependent Claim
95 words
An electrode assembly of an anode, a cathode and insulating separator material between the cathode and the anode wherein (a) the anode is about twice the length of the cathode, the anode is folded in half and the cathode is sandwiched between the fold of the anode and the entire assembly is accordian folded and (b) the anode and the separator is a three piece laminate comprising, in the following order, (i) a metal foil current collector support; (ii) a layer of a malleable anode-active material; and (iii) a layer of the insulating separator material.
Claim 5
Dependent Claim
31 words
The assembly of claim 2 wherein the active cathode material is selected from the group consisting of polyfluorocarbons, FeS 2 , FeS, CuO, MnO 2 and Bi 2 O 3 .
Claim 6
Dependent Claim
21 words
The assembly of claim 2 wherein the anode-active material is lithium and the cathode comprises MnO 2 as the active material.
Claim 7
Dependent Claim
19 words
The assembly of claim 2 or 4 wherein the cathode is laminated to a stainless steel grid current collector.
Claim 8
Dependent Claim
15 words
An electrochemical cell comprising an electrolyte and an electrode assembly of claim 2 or 4.
Claim 9
Dependent Claim
34 words
An electrochemical cell comprising the electrode assembly of claim 2 or 4 and an electrolyte comprising a solvent mixture of (a) propylene carbonate and dimethoxyethane or (b) dimethoxyethane and butyrolactone and a lithium salt.
Claim 10
Dependent Claim
25 words
The assembly of claim 2 or 4 wherein the cathode comprises a metal foil current collector coated on both sides with the active cathode material.
References Cited (Backward Citations)
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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) | 1991-08-02 | 1992-02-01 | 1992-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-02 | 1996-02-01 | 1996-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-02 | 2000-02-01 | 2000-08-02 | $7700.00 | Window Closed / Lapsed |