EP0248386A2
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EP
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Fluorinated carbons and methods of manufacture
Assignee: Electrosynthesis Co Inc
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Filing: 1987-06-01
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Granted: —
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Expires: 2007-06-01
Abstract
Abstract Discontinuities, edge sites and grain boundaries in carbons, the primary locations of instabilities for oxidative corrosion and degradation, are prepared by preoxidation to form carbon-oxides followed by highly selective and relatively mild fluorination to specifically substitute carbon - oxygen functionality with stable carbon-fluorine groups. The novel fluorinated carbons have enhanced chemical and/or electrochemical stabilities to corrosion, improved hydrophobicity, lubricating properties, etc.
Inventors
- 👤 Norman L. Weinberg
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 13:43
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/583; C; C01; C01B; C01B32/00; C01B32/10; H01M4/13; H01M4/133; H01M4/5835; H01M4/86; H01M4/96; H01M10/00; H01M10/05; H01M10/052; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
22 words
A method of fluorinating a carbon, which comprises the steps of preoxidizing the carbon, and fluorinating the preoxidized carbon by specific fluorination.
Claim 2
Independent Claim
22 words
A method of fluorinating a carbon, which comprises the steps of preoxidizing the carbon, and fluorinating the preoxidized carbon by specific fluorination.
Claim 3
Dependent Claim
18 words
The method of Claim 1 wherein the carbon is a material selected from an amorphous or crystalline carbon.
Claim 4
Dependent Claim
29 words
The method of Claim 2 wherein the amorphous carbon is a carbon black and the carbon black is preoxidized and fluorinated at least to 8 percent by weight fluorine.
Claim 5
Dependent Claim
25 words
The method of Claim 2 wherein the crystalline carbon is a graphitic carbon, preoxidized and specifically fluorinated to at least 0.01 percent by weight fluorine.
Claim 6
Dependent Claim
24 words
The method of Claim 1 wherein the carbon is a carbon substrate preoxidized and specifically fluorinated to at least 0.001 percent by weight fluorine.
Claim 7
Dependent Claim
25 words
The method of Claim 5 wherein the carbon substrate is selected from a battery electrode, fuel cell electrode, bifunctional air electrode and vitreous carbon electrode.
Claim 8
Dependent Claim
22 words
The method of Claim 2 including the step of post fluorinating the specifically fluorinated carbon with a moderate or hard fluorinating agent.
Claim 9
Independent Claim
41 words
A method of fluorinating a carbon, which comprises the steps of preoxidizing the carbon, cleaning the preoxidized carbon, and specifically fluorinating the preoxidized and cleaned carbon in the presence of a catalyzing amount of HF, BF₃ or a metal fluoride salt.
Claim 10
Independent Claim
41 words
A method of fluorinating a carbon, which comprises the steps of preoxidizing the carbon, cleaning the preoxidized carbon, and specifically fluorinating the preoxidized and cleaned carbon in the presence of a catalyzing amount of HF, BF₃ or a metal fluoride salt.
Claim 11
Dependent Claim
18 words
A preoxidized, specifically fluorinated amorphous carbon having a fluorine content of at least 8 percent by weight fluorine.
Claim 12
Dependent Claim
18 words
A preoxidized, specifically fluorinated amorphous carbon having a fluorine content of at least 8 percent by weight fluorine.
Claim 13
Dependent Claim
9 words
A preoxidized, specifically fluorinated crystalline carbon or carbon substrate.
Claim 14
Dependent Claim
9 words
A preoxidized, specifically fluorinated crystalline carbon or carbon substrate.
Claim 15
Dependent Claim
12 words
A specifically fluorinated crystalline carbon or carbon substrate comprising a crystalline carbon.
Claim 16
Dependent Claim
12 words
A specifically fluorinated crystalline carbon or carbon substrate comprising a crystalline carbon.
Claim 17
Dependent Claim
13 words
A specifically fluorinated carbon post fluorinated with a moderate or hard fluorinating agent.
Claim 18
Dependent Claim
13 words
A specifically fluorinated carbon post fluorinated with a moderate or hard fluorinating agent.
Claim 19
Dependent Claim
14 words
A preoxidized, specifically fluorinated carbon post fluorinated with a moderate or hard fluorinating agent.
Claim 20
Dependent Claim
14 words
A preoxidized, specifically fluorinated carbon post fluorinated with a moderate or hard fluorinating agent.
Claim 21
Dependent Claim
11 words
A carbon which comprises a specifically fluorinated vitreous or glassy carbon.
Claim 22
Dependent Claim
11 words
A carbon which comprises a specifically fluorinated vitreous or glassy carbon.
Claim 23
Dependent Claim
8 words
An electrode which comprises a specifically fluorinated carbon.
Claim 24
Dependent Claim
8 words
An electrode which comprises a specifically fluorinated carbon.
Claim 25
Dependent Claim
14 words
An electrode which comprises the specifically fluorinated and post fluorinated carbon of Claim 12.
Claim 26
Dependent Claim
15 words
An electrode which comprises the preoxidized specifically fluorinated and post fluorinated carbon of Claim 13.
Claim 27
Dependent Claim
28 words
The electrode of Claim 15 wherein the specifically fluorinated carbon is a material selected from the group consisting of amorphous carbon, crystalline carbon, glassy carbon or mixtures thereof.
Claim 28
Dependent Claim
13 words
The specifically fluorinated carbon electrode of Claim 15 which is a battery electrode.
Claim 29
Dependent Claim
9 words
An electrode which comprises a preoxidized, specifically fluorinated carbon.
Claim 30
Dependent Claim
9 words
An electrode which comprises a preoxidized, specifically fluorinated carbon.
Claim 31
Dependent Claim
14 words
The preoxidized, specifically fluorinated carbon electrode of Claim 20 which is a battery electrode.
Claim 32
Dependent Claim
13 words
A battery comprising the electrode of any one of Claims 19 or 21.
Claim 33
Dependent Claim
11 words
The battery of Claim 22 which includes an electrode comprising lithium.
Claim 34
Dependent Claim
18 words
A battery comprising the electrode of any one of Claims 16 or 17 and an electrode comprising lithium.
References Cited (Backward Citations)
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