US4477374A
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Ternary intercalation compound of a graphite with a metal fluoride and fluorine, a process for producing the same, and an electrically conductive material comprising the ternary intercalation compound
Assignee: CENTRAL GASS Co Ltd
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Filing: 1982-07-02
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Granted: 1984-10-16
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Expires: 2002-07-02
Abstract
Abstract A novel ternary intercalation compound of a graphite with a metal fluoride and fluorine, which is represented by the formula CxF(MFz)y wherein M is Al or Mg and z is an integer corresponding to the valence of M, is produced by contacting a graphite material with a metal fluoride selected from AlF3 and MgF2 in an atmosphere of fluorine gas at a temperature of 0 DEG C. to 400 DEG C. for at least a period of time to effect a weight increase in the graphite. The ternary graphite intercalation compound thus obtained has not only an excellent stability to humidity or moisture but also a high electrical conductivity. The novel ternary graphite intercalation compound according to the present invention may be practically used as a novel electrically conductive material and a catalyst of organic reactions.
Inventors
- 👤 Nobuatsu Watanabe
- 👤 Tsuyoshi Nakajima
- 👤 Masayuki Kawaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:31
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; C; C01; C01B; C01B32/00; C01B32/20; C01B32/21; C01B32/22
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
90 words
A ternary intercalation compound of a graphite with a metal fluoride and fluorine produced by the reaction between a graphite, a metal fluoride and fluorine and which is represented by the formula C x F(MF z ) y , wherein M is Al or Mg; z is an integer corresponding to the valence of M; and the relative values of x and y are determined by the time and temperature of said reaction between the graphite, the metal fluoride and fluorine and the crystallinity and c-axial thickness of the graphite.
Claim 2
Dependent Claim
90 words
A ternary intercalation compound of a graphite with a metal fluoride and fluorine produced by the reaction between a graphite, a metal fluoride and fluorine and which is represented by the formula C x F(MF z ) y , wherein M is Al or Mg; z is an integer corresponding to the valence of M; and the relative values of x and y are determined by the time and temperature of said reaction between the graphite, the metal fluoride and fluorine and the crystallinity and c-axial thickness of the graphite.
Claim 3
Dependent Claim
22 words
A ternary intercalation compound according to claim 1, wherein x is about 3.0 to 50 and y is about 0.0001 to 0.20.
Claim 4
Dependent Claim
60 words
A ternary intercalation compound according to claim 1, wherein said ternary intercalation compound of a graphite with a metal fluoride and fluorine is a mixture of stage compounds consisting essentially of at least two different stage compounds selected from the group consisting of a 1st stage compound, a 2nd stage compound, a 3rd stage compound and a 4th stage compound.
Claim 5
Dependent Claim
134 words
A process for producing a ternary intercalation compound of a graphite with a metal fluoride and fluorine, which comprises contacting a graphite material with a metal fluoride selected from AlF 3 and MgF 2 in an atmosphere of fluorine gas at a temperature of 0° C. to 400° C. for at least a period of time to effect a weight increase in the graphite, whereby there is obtained a ternary intercalation compound represented by the formula C x F(MF z ) y , wherein M is Al or Mg; z is an integer corresponding to the valence of M; and the relative values of x and y are determined by the time and temperature of said reaction between the graphite, the metal fluoride and fluorine and the crystallinity and c-axial thickness of the graphite.
Claim 6
Dependent Claim
134 words
A process for producing a ternary intercalation compound of a graphite with a metal fluoride and fluorine, which comprises contacting a graphite material with a metal fluoride selected from AlF 3 and MgF 2 in an atmosphere of fluorine gas at a temperature of 0° C. to 400° C. for at least a period of time to effect a weight increase in the graphite, whereby there is obtained a ternary intercalation compound represented by the formula C x F(MF z ) y , wherein M is Al or Mg; z is an integer corresponding to the valence of M; and the relative values of x and y are determined by the time and temperature of said reaction between the graphite, the metal fluoride and fluorine and the crystallinity and c-axial thickness of the graphite.
Claim 7
Dependent Claim
20 words
A process according to claim 4, wherein x is about 3.0 to 50 and y is about 0.0001 to 0.20.
Claim 8
Dependent Claim
29 words
A process according to any one of claims 4 or 5, wherein the graphite material and the metal fluoride are employed in a weight ratio of 1:0.4 to 1:10.
Claim 9
Dependent Claim
26 words
A process according to any one of claims 4 or 5, wherein the metal fluoride is AlF 3 and the temperature is 15° to 370° C.
Claim 10
Dependent Claim
26 words
A process according to any one of claims 4 or 5, wherein the metal fluoride is MgF 2 and the temperature is 15° to 350° C.
Claim 11
Dependent Claim
26 words
A process according to any one of claims 4 or 5, wherein the atmosphere of fluorine gas has a fluorine pressure of 0.5 to 10 atm.
Claim 12
Dependent Claim
94 words
An electrically conductive material which comprises a ternary intercalation compound of a graphite with a metal fluoride and fluorine produced by the reaction between a graphite, a metal fluoride and fluorine and represented by the formula C x F(MF z ) y , wherein M is Al or Mg; z is an integer corresponding to the valence of M; and the relative values of x and y are determined by the time and temperature of said reaction between the graphite, the metal fluoride and fluorine and the crystallinity and c-axial thickness of the graphite.
Claim 13
Dependent Claim
94 words
An electrically conductive material which comprises a ternary intercalation compound of a graphite with a metal fluoride and fluorine produced by the reaction between a graphite, a metal fluoride and fluorine and represented by the formula C x F(MF z ) y , wherein M is Al or Mg; z is an integer corresponding to the valence of M; and the relative values of x and y are determined by the time and temperature of said reaction between the graphite, the metal fluoride and fluorine and the crystallinity and c-axial thickness of the graphite.
Claim 14
Dependent Claim
22 words
An electrically conductive material according to claim 10, wherein x is about 3.0 to 50 and y is about 0.0001 to 0.20.
References Cited (Backward Citations)
US3956194A
Cited
US4119655A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |