US5030529A
Expired / Lapsed
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Carbon electrode
Assignee: Sharp Corp
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Filing: 1990-08-15
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Granted: 1991-07-09
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Expires: 2010-08-15
Abstract
Abstract A carbon electrode including a first carbon layer containing an iron family element formed by vapor pyrolytic deposition of a hydrocarbon compound and a second carbon layer free from any iron family element formed over the surface of said first carbon layer, which is useful in a secondary lithium battery and makes its capacity greater and self-discharge ratio lower.
Inventors
- 👤 Hiroshi Wada
- 👤 Yoshikazu Yoshimoto
- 👤 Masaru Yoshida
- 👤 Shigeo Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:07
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/583; H01M4/587; C; C23; C23C; C23C16/00; C23C16/22; C23C16/26; H01M4/362; H01M4/366; H01M4/86; H01M4/96; H01M4/13; H01M4/139; H01M4/1393; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
42 words
A carbon electrode comprising a first carbon layer containing an iron family element formed by vapor pyrolytic deposition of a hydrocarbon compound and a second carbon layer free from any iron family element formed over the surface of said first carbon layer.
Claim 2
Dependent Claim
42 words
A carbon electrode comprising a first carbon layer containing an iron family element formed by vapor pyrolytic deposition of a hydrocarbon compound and a second carbon layer free from any iron family element formed over the surface of said first carbon layer.
Claim 3
Dependent Claim
22 words
The carbon electrode as set forth in claim 1, wherein the iron family element contained in said first carbon layer is Ni.
Claim 4
Dependent Claim
31 words
The carbon electrode as set forth in claim 1, wherein a content of said iron family element in said first layer becomes less in a portion nearer to the surface thereof.
Claim 5
Dependent Claim
20 words
The carbon electrode as set forth in claim 1, which is applied to a negative electrode for secondary lithium batteries.
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) | 1994-07-08 | 1995-01-07 | 1995-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-08 | 1999-01-07 | 1999-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-08 | 2003-01-07 | 2003-07-09 | $7700.00 | Window Closed / Lapsed |