US4396689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separator-spacer for electrochemical systems
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1981-06-01
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Granted: 1983-08-02
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Expires: 2001-06-01
Abstract
Abstract An electrochemical cell construction features a novel co-extruded plastic electrode in an interleaved construction with a novel integral separator-spacer. Also featured is a leak and impact resistant construction for preventing the spill of corrosive materials in the event of rupture.
Inventors
- 👤 Patrick G. Grimes
- 👤 Harry Einstein
- 👤 Kenneth R. Newby
- 👤 Richard J. Bellows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:06
CPC Classifications
C; C25; C25B; C25B13/00; C25B13/02; H; H01; H01M; H01M50/00; H01M50/40; H01M50/463; H01M8/00; H01M8/02; H01M8/0202; H01M8/0204; H01M8/0213; H01M8/0271; H01M8/0273; H01M8/0289; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
103 words
An integral separator and spacer for use in an electrochemical cell having circulating electrolyte flowing therethrough, wherein said separator-spacer is a sheet disposed between adjacent electrodes of said cell and comprises a frame disposed about a microporous web, said web being thinner than said frame in order to form internal compartments between said separator-spacer sheet and said adjacent electrodes, so that circulating electrolyte can flow about said electrodes, said web providing ionic communication between adjacent compartments of said cell, a surface on each side of said web covered with projections for maintaining a spaced compartmental distance between said separator-spacer and said adjacent electrodes.
Claim 2
Dependent Claim
103 words
An integral separator and spacer for use in an electrochemical cell having circulating electrolyte flowing therethrough, wherein said separator-spacer is a sheet disposed between adjacent electrodes of said cell and comprises a frame disposed about a microporous web, said web being thinner than said frame in order to form internal compartments between said separator-spacer sheet and said adjacent electrodes, so that circulating electrolyte can flow about said electrodes, said web providing ionic communication between adjacent compartments of said cell, a surface on each side of said web covered with projections for maintaining a spaced compartmental distance between said separator-spacer and said adjacent electrodes.
Claim 3
Dependent Claim
30 words
The integral separator-spacer of claim 1, wherein substantially all of said projections on one surface of said web are directly opposite corresponding projections on the other surface of said web.
Claim 4
Dependent Claim
14 words
The integral separator-spacer of claim 2, wherein said projections are comprised of pebble-shaped protuberances.
Claim 5
Dependent Claim
14 words
The integral separator-spacer of claim 1, wherein said projections are comprised of pebble-shaped protuberances.
Claim 6
Dependent Claim
14 words
The integral separator-spacer of claim 2, wherein said projections are comprised of rod-shaped protuberances.
Claim 7
Dependent Claim
14 words
The integral separator-spacer of claim 1, wherein said projections are comprised of rod-shaped protuberances.
Claim 8
Dependent Claim
17 words
The integral separator-spacer of claim 2, wherein said projections are comprised of a combination of pebble-and-rod shaped-protuberances.
Claim 9
Dependent Claim
16 words
The integral separator-spacer of claim 1, wherein said projections are comprised of a combination of pebble-and-rod-shaped-protuberances.
Claim 10
Dependent Claim
16 words
The integral separator-spacer of claim 1, further comprising a non-porous border substantially surrounding said microporous web.
Claim 11
Dependent Claim
12 words
The integral separator-spacer of claim 1, wherein said microporous web is ion-selective.
Claim 12
Dependent Claim
11 words
The integral separator-spacer of claim 1, wherein said projections are non-ionically-conductive.
Claim 13
Dependent Claim
11 words
The integral separator-spacer of claim 2, wherein said projections are non-ionically-conductive.
Claim 14
Dependent Claim
12 words
The integral separator-spacer of claim 1, wherein said projections have non-ionically-conductive caps.
Claim 15
Dependent Claim
12 words
The integral separator-spacer of claim 2, wherein said projections have non-ionically-conductive caps.
Claim 16
Dependent Claim
12 words
The integral separator-spacer of claim 1, wherein said projections are diamond shaped.
Claim 17
Dependent Claim
12 words
The integral separator-spacer of claim 2, wherein said projections are diamond shaped.
Claim 18
Dependent Claim
20 words
The integral separator-spacer of claim 1, wherein said projections are comprised of material different than the material of said web.
Claim 19
Dependent Claim
20 words
The integral separator-spacer of claim 2, wherein said projections are comprised of material different than the material of said web.
Claim 20
Dependent Claim
16 words
The integral separator-spacer of claim 1, wherein said projections are less ionically conductive than the web.
Claim 21
Dependent Claim
16 words
The integral separator-spacer of claim 2, wherein said projections are less ionically conductive than the web.
Claim 22
Dependent Claim
12 words
The integral separator-spacer of claim 1, wherein said projections are substantially non-porous.
Claim 23
Dependent Claim
12 words
The integral separator-spacer of claim 2, wherein said projections are substantially non-porous.
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) | 1986-08-01 | 1987-01-31 | 1987-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-01 | 1991-01-31 | 1991-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-01 | 1995-01-31 | 1995-08-02 | $7700.00 | Window Closed / Lapsed |