US5246794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode collector made from carbon fibrils
Assignee: Hyperion Catalysis International Inc
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Filing: 1991-03-19
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Granted: 1993-09-21
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Expires: 2011-03-19
Abstract
Abstract Cathode collectors are made in a substantially dry method from carbon fibrils that have a fiber diameter of from about 2 to about 200 nanometers, a fiber length to diameter ratio of from about 10 to about 500, with a maximum length of 1 millimeter, and a fiber surface area of from about 10 to about 500 m 2 /g, and a binder.
Inventors
- 👤 George E. Blomgren
- 👤 John C. Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:29
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M4/86; H01M4/96; H01M6/00; H01M6/14; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
72 words
An electrochemical cell comprising an anode, a liquid cathode-electrolyte solution and a cathode collector formed from a mixture of carbon fibrils that have a fiber diameter of from about 2 to about 200 nanometers, a fiber length to diameter ratio of from about 10 to about 500, with a maximum length of 1 millimeter, and a fiber surface area of from about 10 to about 500 m 2 /g, and a binder.
Claim 2
Dependent Claim
72 words
An electrochemical cell comprising an anode, a liquid cathode-electrolyte solution and a cathode collector formed from a mixture of carbon fibrils that have a fiber diameter of from about 2 to about 200 nanometers, a fiber length to diameter ratio of from about 10 to about 500, with a maximum length of 1 millimeter, and a fiber surface area of from about 10 to about 500 m 2 /g, and a binder.
Claim 3
Dependent Claim
49 words
The electrochemical cell of claim 1, wherein the anode is an alkali metal and the cathode-electrolyte is comprised of an oxyhalide of the elements in Group V or VI, or a liquid halide of the elements of Group IV to VI of the Periodic Table, or SO 2 .
Claim 4
Dependent Claim
18 words
The electrochemical cell of claim 2, wherein the anode is lithium and the oxyhalide solvent is thionyl chloride.
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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) | 1996-09-20 | 1997-03-22 | 1997-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-20 | 2001-03-22 | 2001-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-20 | 2005-03-22 | 2005-09-21 | $7700.00 | Window Closed / Lapsed |