US4863814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode and a battery with the same
Assignee: Sharp Corp
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Filing: 1987-03-26
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Granted: 1989-09-05
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Expires: 2007-03-26
Abstract
Abstract An electrode comprising as the main component carbon materials that have a layer structure more disordered than graphite and have hexagonal net faces with a selective orientation. Using said electrode, a secondary battery with a nonaqueous electrolytic solution is manufactured, which comprises a positive electrode, a nonaqueous electrolytic solution, and a negative electrode that has carbon materials as the active substances that can form an electrochemically reversible compound with a light-weight metal element, wherein said positive electrode is made such that its capacity for being charged or discharged is greater than that of said negative electrode.
Inventors
- 👤 Motoo Mohri
- 👤 Hideaki Tanaka
- 👤 Tomonari Suzuki
- 👤 Yoshimitsu Tajima
- 👤 Yoshikazu Yoshimoto
- 👤 Shigeo Nakajima
- 👤 Michiyo Kasahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:40
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; H01M10/0525; C; C01; C01B; C01B32/00; C01B32/05; C23; C23C; C23C16/00; C23C16/22; C23C16/26; H01M4/00; H01M4/02; H01M4/13; H01M4/133; H01M4/36; H01M4/58; H01M4/583; H01M4/587; H01M4/86; H01M4/96; H01M4/139; H01M4/1393; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
77 words
An electrode comprising as the main component carbon materials that have a layer structure more disordered than graphite and have hexagonal net faces with a selective orientation, the mean spacing of said hexagonal net faces ranging from 3.37 Å to 3.55 Å, wherein said carbon materials further have the ratio of the peak strength at 1,360 cm -1 to the peak strength at 1,580 cm -1 of the argon laser Raman spectrum ranging from 0.4 to 1.0.
Claim 2
Dependent Claim
77 words
An electrode comprising as the main component carbon materials that have a layer structure more disordered than graphite and have hexagonal net faces with a selective orientation, the mean spacing of said hexagonal net faces ranging from 3.37 Å to 3.55 Å, wherein said carbon materials further have the ratio of the peak strength at 1,360 cm -1 to the peak strength at 1,580 cm -1 of the argon laser Raman spectrum ranging from 0.4 to 1.0.
Claim 3
Dependent Claim
72 words
An electrode according to claim 1, wherein said carbon materials are carbon deposits that are obtained by thermal decomposition of the gas phase of a hydrocarbon or a hydrocarbon compound, which is prepared by the addition of a specific group including at least one selected from oxygen, nitrogen, sulfur, and a halogen to a part of said hydrocarbon or by the substitution of said specific group for a part of said hydrocarbon.
Claim 4
Dependent Claim
24 words
An electrode according to claim 1, wherein said carbon materials are doped with alkali metals, alkaline earth metals, rare earth metals, or transition metals.
Claim 5
Dependent Claim
19 words
An electrode according to claim 1, wherein said carbon metals are doped with halogens, halogen compounds, or oxygen acids.
Claim 6
Dependent Claim
16 words
An electrode according to claim 1, wherein said carbon materials are deposited on a conductive substrate.
Claim 7
Dependent Claim
21 words
An electrode according to claim 5, wherein said conductive substrate is a porous substrate with a porosity of 60% or more.
Claim 8
Dependent Claim
28 words
A battery comprising an electron-donating substance and an electron-attracting substance as the charge carrier, wherein the substrate of said charge carrier is the electrode according to claim 5.
Claim 9
Dependent Claim
26 words
A battery according to claim 7, wherein said electron-donating substance is an alkali metal, an alkaline earth metal, a rare earth metal, or a transition metal.
Claim 10
Dependent Claim
17 words
A battery according to claim 7, wherein said electron-attracting substance is a halogen or a halogen compound.
Claim 11
Dependent Claim
29 words
A battery according to claim 7, wherein the conductive substrate of said electrode is a flat board, a metal foam, a nonwoven metal cloth, or a woven metal cloth.
Claim 12
Dependent Claim
67 words
A secondary battery with a nonaqueous electrolytic solution comprising a positive electrode, a nonaqueous electrolytic solution, and a negative electrode that has carbon materials according to claim 1 as the active substances that can form an electrochemically reversible compound with a light-weight metal element, wherein said positive electrode is made such that its capacity for being charged or discharged is greater than that of said negative electrode.
References Cited (Backward Citations)
US4013759A
Cited
US4163829A
Cited
US4534949A
Cited
US4617243A
Cited
US4576697A
Cited
JPS60226405A
Cited
JPS61111907A
Cited
US4548881A
Cited
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) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |