US4485155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage element for electrical energy
Assignee: Robert Bosch GmbH
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Filing: 1983-02-28
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Granted: 1984-11-27
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Expires: 2003-02-28
Abstract
Abstract An electric energy storage element having a housing and at least two ion pervious graphite electrodes connected by an ion-containing electrolyte. The storage element may be used as a secondary battery or as a condenser. During charging, the ionic component of the electrolyte forms ions which are implanted in the graphite electrodes.
Inventors
- 👤 Walter Holl
- 👤 Adolf Mandel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:45
CPC Classifications
H; H01; H01G; H01G11/00; H01G11/22; H01G11/30; H01G11/32; H01G11/78; H01M; H01M10/00; H01M10/05; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/583; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/13
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
78 words
An electric energy storage element, comprising a housing structure; at least one positive electrode mounted within the housing; at least one negative electrode mounted within the housing and spaced from said at least one positive electrode; and an ionic electrolyte in contact with said electrodes; said at least one positive electrode and at least one negative electrode each comprising an ion pervious graphite having ions which are formed from ions from said electrolyte stored in the graphite lattice.
Claim 2
Dependent Claim
78 words
An electric energy storage element, comprising a housing structure; at least one positive electrode mounted within the housing; at least one negative electrode mounted within the housing and spaced from said at least one positive electrode; and an ionic electrolyte in contact with said electrodes; said at least one positive electrode and at least one negative electrode each comprising an ion pervious graphite having ions which are formed from ions from said electrolyte stored in the graphite lattice.
Claim 3
Dependent Claim
11 words
The storage element of claim 1, wherein said graphite is doped.
Claim 4
Dependent Claim
22 words
The storage element of claim 2, wherein said graphite, before the storage element has been charged, is doped with FeCl 3 .
Claim 5
Dependent Claim
14 words
The storage element of claim 1, wherein said graphite is an expanded graphite sheet.
Claim 6
Dependent Claim
13 words
The storage element of claim 1, wherein said electrodes comprise highly graphitized fibers.
Claim 7
Dependent Claim
23 words
The storage element of claim 1, wherein the electrolyte comprises a conducting salt which dissociates into single valence ions, and a polar solvent.
Claim 8
Dependent Claim
27 words
The storage element of claim 6, wherein the conducting salt is selected from the group consisting of the chlorides and perchlorides of lithium, potassium, sodium and tetraakylammonium.
Claim 9
Dependent Claim
25 words
The storage element of claim 6 or claim 7, wherein the polar solvent is selected from the group consisting of propylene carbonate, gamma-butyrolactone and dimethylformamide.
Claim 10
Dependent Claim
24 words
The storage element of claim 7, wherein the conducting salt has a concentration of between 0.5 mol per liter of electrolyte up to saturation.
Claim 11
Dependent Claim
24 words
The storage element of claim 8, wherein the conducting salt has a concentration of between 0.5 mol per liter of electrolyte up to saturation.
Claim 12
Dependent Claim
15 words
The storage element of claim 1, which is charged and used as a secondary battery.
Claim 13
Dependent Claim
25 words
The storage element of claim 1, which is charged and used as a condenser for DC voltage having a capacitance of at least 1 F.
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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) | 1987-11-27 | 1988-05-28 | 1988-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-27 | 1992-05-28 | 1992-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-27 | 1996-05-28 | 1996-11-27 | $7700.00 | Window Closed / Lapsed |