US5011749A
Expired / Lapsed
US
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Thin ribbonlike flexible rechargeable zinc/halide cell
Assignee: Yeda Research and Development Co Ltd
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Filing: 1989-07-10
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Granted: 1991-04-30
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Expires: 2009-07-10
Abstract
Abstract A rechargeable zinc halide electrochemical cell comprises a laminate of the sequence: a. an electrically conducting chemically inert material; b. a matrix supporting a zinc halide; and c. an electrically conducting layer adapted to absorb and adsorb halogen. Inert and ion specific separation layers can be added to the laminate. Because of the laminate construction of the cell, the cell of the present invention can be made in an extremely thin configuration.
Inventors
- 👤 Joost Manassen
- 👤 Israel Cabasso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:40
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/365; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
50 words
A rechargeable zinc halide electrolyte electrochemical cell comprising a laminate of the sequence: a. an electrically conducting chemically inert material; b. a membrane matrix formed of an hydrophilic polymer matrix in which is immobilized a zinc halide electrolyte; and c. an electrically conducting layer adapted to absorb and absorb halogen.
Claim 2
Dependent Claim
50 words
A rechargeable zinc halide electrolyte electrochemical cell comprising a laminate of the sequence: a. an electrically conducting chemically inert material; b. a membrane matrix formed of an hydrophilic polymer matrix in which is immobilized a zinc halide electrolyte; and c. an electrically conducting layer adapted to absorb and absorb halogen.
Claim 3
Dependent Claim
30 words
A laminate according to claim 1, which can be cut to any desired size of battery, where wires are attached to the final size assembly to layers (a) and (c).
Claim 4
Dependent Claim
15 words
An electrochemical cell according to claim 1, wherein layer (a) is a chemically inert-metal screen.
Claim 5
Dependent Claim
26 words
An electrochemical cell according to claim 1 wherein the sublayers attached with each other result in a multi-layer laminate of about 1 to 3 mm thickness.
Claim 6
Dependent Claim
24 words
A cell according to claim 1, wherein sublayer "a" is a product of an electronically conducting material, dissolved or dispersed in a suitable solvent.
Claim 7
Dependent Claim
18 words
A cell according to claim 1, wherein sublayer "b" comprises a polymer which is swellable in electrolyte solution.
Claim 8
Dependent Claim
11 words
A cell according to claim 1, wherein sublayer "b" comprises polyacrylamide.
Claim 9
Dependent Claim
12 words
A cell according to claim 1, wherein sublayer "b" comprises polyvinyl alcohol.
Claim 10
Dependent Claim
13 words
A cell according to claim 1, wherein sublayer "c" comprises activated carbon powder.
Claim 11
Dependent Claim
25 words
A cell according to claim 1, wherein sublayer "c" comprises a material having a specific electrical resistance of from 0.001 to one thousand ohm cm.
Claim 12
Dependent Claim
48 words
A cell according to claim 1, wherein sublayer "c" comprises a mixture of activated carbon powder having a specific electrical resistance of from 0.001 to 1000 ohm/cm with material containing anion exchange groups, selected from the group consisting of quaternary ammonium, quaternary phosphonium, tertiary sulfonium and polyamino groups.
Claim 13
Dependent Claim
38 words
A cell according to claim 1, wherein the electrolyte is a mixture of zinc bromide with halides of alkali metal ions, selected from the group consisting of Cs, K, Na, Li, and NH 4 , and mixtures thereof.
Claim 14
Dependent Claim
38 words
A cell according to claim 1, wherein the electrolyte is a mixture of zinc chloride with halides of alkali metal ions, selected from the group consisting of Cs, K, Na, Li, and NH 4 , and mixtures thereof.
Claim 15
Dependent Claim
30 words
A cell according to claim 1, serving as a unit cell in a secondary battery, the thickness of the cell being in the range of 2 microns to 5 centimeters.
Claim 16
Dependent Claim
22 words
A unit cell as defined in claim 14, wherein sublayer "a" is covered with an insulating layer, which is impermeable to electrolyte.
Claim 17
Dependent Claim
10 words
A cell according to claim 1, which is spirally wound.
Claim 18
Dependent Claim
16 words
A cell according to claim 16, wherein electrical connections between the unit cells are in series.
Claim 19
Dependent Claim
16 words
A cell according to claim 16, wherein electrical connections between the unit cells are in parallel.
Claim 20
Dependent Claim
13 words
A cell according to claim 1, stacked in a plate and frame mode.
Claim 21
Dependent Claim
27 words
A cell according to claim 1, prepared without electrolyte, the electrolyte being introduced at a later stage by bringing the composite into contact with an electrolyte solution.
Claim 22
Dependent Claim
53 words
The cell according to claim 20, wherein the electrolyte solution is a solution containing a mixture of a zinc salt selected from the group consisting of zinc chloride and zinc bromide with halides of alkali metal ions selected from the group consisting of Cs, K Na, Li, NH 4 , and mixtures thereof.
Claim 23
Dependent Claim
16 words
An electrochemical cell according to claim 1 wherein layer "a" is made of a paper-like material.
Claim 24
Dependent Claim
30 words
An electrochemical cell according to claim 1 wherein layer "a" is activated carbon; layer "b" is a crosslinked polymer gel supporting a zinc halide; and layer "c" is activated carbon.
Claim 25
Dependent Claim
62 words
A rechargeable zinc halide electrolyte electrochemical cell comprising a laminate of the sequence: a. an electrically conducting chemically inert material; b. a membrane matrix formed of an hydrophilic polymer matrix in which is immobilized a zinc halide electrolyte; and c. an electrically conducting layer adapted to absorb and adsorb halogen; further comprising at least one additional matrix supporting zinc halide or separator.
Claim 26
Dependent Claim
62 words
A rechargeable zinc halide electrolyte electrochemical cell comprising a laminate of the sequence: a. an electrically conducting chemically inert material; b. a membrane matrix formed of an hydrophilic polymer matrix in which is immobilized a zinc halide electrolyte; and c. an electrically conducting layer adapted to absorb and adsorb halogen; further comprising at least one additional matrix supporting zinc halide or separator.
Claim 27
Dependent Claim
24 words
A cell according to claim 24, wherein sublayer "b" is made of a material selected from the group consisting of polyvinyl alcohol and polyacrylamide.
Claim 28
Dependent Claim
61 words
A rechargeable zinc halide electrolyte electrochemical cell comprising a laminate of the sequence: a. an electrically conducting chemically inert material; b. a membrane matrix formed of an hydrophilic polymer matrix in which is immobilized a zinc halide electrolyte; and c. an electrically conducting layer adapted to absorb and adsorb halogen; further including a fourth sublayer which comprises a porous membrane matrix.
Claim 29
Dependent Claim
61 words
A rechargeable zinc halide electrolyte electrochemical cell comprising a laminate of the sequence: a. an electrically conducting chemically inert material; b. a membrane matrix formed of an hydrophilic polymer matrix in which is immobilized a zinc halide electrolyte; and c. an electrically conducting layer adapted to absorb and adsorb halogen; further including a fourth sublayer which comprises a porous membrane matrix.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-04-29 | 1994-10-29 | 1995-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-29 | 1998-10-29 | 1999-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-29 | 2002-10-29 | 2003-04-30 | $7700.00 | Window Closed / Lapsed |