Claims
- 1. A reticulate electrode for use in the electrolysis of aqueous salt solutions in which a gaseous product is produced which comprises a network of electroconductive metal coated filaments having a porosity of above about 80 percent, said reticulate electrode having a face and a back side, said back side having a non-continuous coating of a hydrophobic coating agent.
- 2. The reticulate electrode of claim 1 in which said electroconductive metal is selected from the group consisting of nickel and nickel alloys; molybdenum and molybdenum alloys; iron and iron alloys; cobalt and cobalt alloys; magnesium and magesium alloys; tungsten and tungsten alloys; and gold and gold alloys where the alloying metal is suitable for use in contact with the electrolyte.
- 3. The reticulate electrode of claim 2 in which said electrode is a cathode.
- 4. The reticulate electrode of claim 3 in which said electroconductive metal is selected from the group consisting of nickel and nickel alloys.
- 5. The reticulate electrode of claim 1 in which said hydrophobic coating agent is a thermoplastic polymer selected from the group consisting of polyolefins, polyhaloolefins, polyarylene sulfides, and sulfone polymers.
- 6. The reticulate electrode of claim 5 in which said thermoplastic polymer is a polyhaloolefin selected from the group consisting of polytetrafluoroethylene, polyvinyl fluoride, polyvinylidene fluoride, polychlorotrifluoroethylene, fluorinated ethylenepropylene copolymer, ethylene-chlorotrifluoroethylene copolymer, polyvinyl chloride, polyvinylidene chloride, perfluoroalkoxy resin, ethylene-tetrafluoroethylene copolymer and TEFLON.RTM. EPE.
- 7. The reticulate electrode of claim 5 in which said thermoplastic polymer is a polyarylene sulfide selected from the group consisting of polyphenylene sulfide and polynaphthalene sulfide.
- 8. The reticulate electrode of claim 6 in which said polyhaloolefin is selected from the group consisting of polytetrafluoroethylene, fluorinated ethylene-propylene copolymer and ethylene-chlorotrifluoroethylene copolymer.
- 9. The reticulate electrode of claim 7 or claim 14 in which from about 20 to about 40 percent of the projected surface area of said coated surface is covered by said hydrophobic coating agent.
Parent Case Info
This is a division, of application Ser. No. 238,267, filed Feb. 25, 1981, now U.S. Pat. No. 4,401,519.
US Referenced Citations (4)
Non-Patent Literature Citations (2)
Entry |
A. Tentorio and U. Casolo-Ginelli, Characterization of Reticulate, Three-Dimensional Electrodes, Journal of Applied Electrochemistry, pp. 195-205, (1978). |
Optimization of the Effectiveness of a Three-Dimensional Electrode with Respect to its Ohmic Variables, Electrochimica Acta. 24, pp. 1145, 1149, (1979). |
Divisions (1)
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Number |
Date |
Country |
Parent |
238267 |
Feb 1981 |
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