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US4064331A
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Method for the preparation of iron electrodes
Assignee: Westinghouse Electric Corp
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Filing: 1976-02-13
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Granted: 1977-12-20
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Expires: 1996-02-13
Abstract
Abstract A method for preparing iron electrodes is provided which includes mixing particulate iron such as iron powder, iron oxide or iron hydroxide with an organic moldable resin and, preferably, carbon black. The mixture is molded into the desired electrode configuration and the molded electrode is heated in an inert atmosphere to at least 950° C. to carbonize said resin. The electrode may be thereafter activated by use of sulfur compound or the like.
Inventors
- 👤 Jesse T. Patton
- 👤 Alois Langer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:02
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/24; H01M4/26; H01M4/30; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
128 words
A method for the preparation of an iron electrode comprising mixing a particulate iron selected from the group consisting of an iron powder, an iron oxide and an iron hydroxide with an organic moldable resin, carbonizable at the temperatures of at least 950° C., wherein the weight ratio of particulate iron to resin is from about 1:1 to about 8:1, and a small effective amount of a carbon black; molding said mixture into an electrode shape, and slowly heating said molded shape to at least 950° C. in an inert atmosphere, to carbonize said organic resin into a porous matrix and form a mechanically strong, porous electrode; wherein the amount of carbon black present is effective to maintain conductivity between the matrix and the iron particles after carbonization.
Claim 2
Independent Claim
128 words
A method for the preparation of an iron electrode comprising mixing a particulate iron selected from the group consisting of an iron powder, an iron oxide and an iron hydroxide with an organic moldable resin, carbonizable at the temperatures of at least 950° C., wherein the weight ratio of particulate iron to resin is from about 1:1 to about 8:1, and a small effective amount of a carbon black; molding said mixture into an electrode shape, and slowly heating said molded shape to at least 950° C. in an inert atmosphere, to carbonize said organic resin into a porous matrix and form a mechanically strong, porous electrode; wherein the amount of carbon black present is effective to maintain conductivity between the matrix and the iron particles after carbonization.
Claim 3
Dependent Claim
25 words
A method as set forth in claim 1 wherein the ratio by weight of said particulate iron to carbon black to resin is about 8:1:2.
Claim 4
Dependent Claim
86 words
A method as set forth in claim 1 wherein said resin is a phenolic resin, the iron has a particle size of between about 200 mesh to 300 mesh, the electrode is molded at a temperature of about 100° C. and at a pressure of about 1000 psi and then heated at a temperature rate of about 4° C./min. to at least 950° C in an argon atmosphere and where, as a last step, the electrode is activated by soaking it in a sulfur compound solution.
Claim 5
Dependent Claim
14 words
An iron electrode as prepared in the method as set forth in claim 1.
Claim 6
Dependent Claim
14 words
An iron electrode as prepared in the method as set forth in claim 2.
Claim 7
Dependent Claim
13 words
An iron electrode prepared in the method as set forth in claim 3.
References Cited (Backward Citations)
US3347668A
Cited
US3255283A
Cited
US3413152A
Cited
US3531329A
Cited
US3573122A
Cited
US3711279A
Cited
US3625765A
Cited
US3819413A
Cited
US3836397A
Cited
US3849198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |