US3871988A - Cathode structure for electrolytic cell - Google Patents

Cathode structure for electrolytic cell Download PDF

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Publication number
US3871988A
US3871988A US376782A US37678273A US3871988A US 3871988 A US3871988 A US 3871988A US 376782 A US376782 A US 376782A US 37678273 A US37678273 A US 37678273A US 3871988 A US3871988 A US 3871988A
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US
United States
Prior art keywords
metal
foraminous
projections
cathode
reinforcing means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US376782A
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English (en)
Inventor
Cyril J Harke
Monte D Crippen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oxytech Systems Inc
Original Assignee
Hooker Chemicals and Plastics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hooker Chemicals and Plastics Corp filed Critical Hooker Chemicals and Plastics Corp
Priority to US376782A priority Critical patent/US3871988A/en
Priority to CA202,460A priority patent/CA1034905A/en
Priority to GB2698574A priority patent/GB1433693A/en
Priority to DE2430384A priority patent/DE2430384A1/de
Priority to NL7408723A priority patent/NL7408723A/xx
Priority to BE146122A priority patent/BE817133A/xx
Priority to JP49076882A priority patent/JPS5038699A/ja
Priority to FR7423109A priority patent/FR2236026B1/fr
Priority to IT24780/74A priority patent/IT1015659B/it
Application granted granted Critical
Publication of US3871988A publication Critical patent/US3871988A/en
Assigned to OCCIDENTAL CHEMICAL CORPORATION reassignment OCCIDENTAL CHEMICAL CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE APRIL 1, 1982. Assignors: HOOKER CHEMICALS & PLASTICS CORP.
Assigned to OXYTECH SYSTEMS, INC. reassignment OXYTECH SYSTEMS, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: OCCIDENTAL CHEMICAL CORPORATION, A NY CORP
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
    • C25B11/03—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form perforated or foraminous

Definitions

  • ABSTRACT A cathode structure for a chlor-alkali type diaphragm electrolytic cell presenting a conductive metal enclosure having positioned therein a peripheral, foraminous metal chamber, said chamber having in communication therewith plural foraminous metal projections, said foraminous metal projections being substantially rectangular in cross section, and including therein reinforcing means comprising a metal sheet extending substantially throughout the inner portion of said foraminous metal projections, said metal sheet having a plurality of projections extending from each side of said metal sheet to the inner surfaces of said foraminous projections.
  • the thus described reinforcing means serves not only to maintain the foraminous metal projections in proper alignment with the anode members of the electrolytic cell across the entire height and width of the metal projections but also results in a decreased tendency of the hydrogen gas product to contaminate the anode product.
  • This invention relates to electrolytic cells for the electrolysis of aqueous solutions and more particularly to the cathode structure of a diaphragm type electrolytic cell particularly suited for the electrolysis of aqueous alkali metal chloride-containing solutions.
  • Chlor-alkali diaphragm cells have been used extensively for many years for the production of chlorine, caustic and hydrogen. Over the years, such cells have been perfected to a degree whereby high operating efficiencies are obtained based on the electrical energy expended. Most recent developments in diaphragm chloralkali cells have been in improvements for increasing the production capacity of individual cells, thereby obtaining a higher production rate for a given cell room area. Chlor-alkali cells have been developed capable of utilizing over 55,000 amperes of current per cell. Currently cells operating at about 150,000 amperes are in use.
  • a cathode structure for an electrolytic chlor-alkali diaphragm type cell comprising a conductive metal enclosure having positioned therein a peripheral foraminous metal chamber, said chamber having in communication therewith a plurality of foraminous metal projections, said foraminous projections being substantially rectangular in shape and including therein reinforcing means comprising a metal sheet extending substantially throughout the inner portion of said foraminous metal projections, said metal sheet bearing a plurality of projections extending from each side of said metal sheet to the inner surfaces of said foraminous metal projections.
  • substantially rectangular in cross section or shape is meant to include structures having parallel sides and either substantially corners or substantially rounded corners.
  • cathode fingers may traverse the width of the cathode structure or said fingers may comprise two sections, each extending from a side wall of the cathode structure to a mid-point thereof with an anolyte downcomer space in the center of the cell as disclosed in US. Pat. No. 3,492,422.
  • the present invention provides an improved cathode structure for diaphragm type electrolytic chlor-alkali cells by which accurate alignment of the cathode with the anode is more readily effected and maintained. Additionally, the cathode structure can be fabricated at a lower cost while resulting in increased structural strength.
  • a further asset or advantage over the older cathode finger structure reinforced by corrugated sheet material follows from the increased space within the improved reinforced cathode finger structure which of fers less impedient to the flow of the hydrogen gas liberated at the cathode and thus decreases the tendency of the hydrogen gas to permeate the diaphragm and contaminate the anode product.
  • FIG. 1 is a plan view of the cathode structure in ac- I cordance with the present invention.
  • FIG. 2 is an enlarged partial sectional view of the cathode of FIG. 1 along the plane 22, further illustrating the position of the anode and cell bottom in relation to the foraminous cathode projections, and
  • FIG. 3 is a plan view of an improved reinforcing means prior to emplacement within a foraminous cathode projection in accordance with the present invention.
  • the present invention may be used in many different electrolytic processes of which chlor-alkali electrolysis is of primary importance, the invention will be described more particularly with respect tosuch chlor-alkali diaphragm cell operation. However, such description is not to be understood as limiting the usefulness of the present invention, particularly in view of the fact that the present cell can be operated without the use of a diaphragm as described hereinafter.
  • cathode structure in which the cathode fingers traverse the width of the cathode structure, it being understood that said fingers may also comprise two sections each being attached to one side wall of the cathode structure and traverse about one half thereof with an anolyte downcomer space in the center of the cell separating the two sections of cathode fingers.
  • the cathode section of the present invention is comprised of an enclosure having sidewalls 14 forming preferably a rectangular shaped structure of a suitable size corresponding to the particular cell and capacity thereof, with which cell it is to be used, and a plurality of foraminous projections 18.
  • Surrounding the enclosure at the top and bottom of sidewall 14 are flanges 12 and 13.
  • Flanges l2 and 13 are utilized to more conveniently seal the cathode section in a watertight relationship in the assembled electrolytic cell.
  • Flange 13 rests on gasket 30 which is between the cathode 10 and cell bottom 28.
  • Flange 12 provides a contact plate on which the cell top (not shown) rests.
  • Surrounding the internal portion of cathode 10 is peripheral chamber 16. Gas being liberated in the cathode section during the electrolysis is channeled across the foraminous projections 18 to the peripheral chamber 16 from whence it proceeds to gas withdrawal means 20.
  • cathode 10 Extending across cathode 10 are a plurality of foraminous projections 18. These are commonly called cathode fingers.
  • the number of foraminous projections may vary widely, depending on the particular cell size, but commonly about two to 100 or more, more preferably five to 50 and most preferably about to 25 are present.
  • an inert diaphragm is applied or deposited on the foraminous structure.
  • the diaphragm which can be used to cover the screen of foraminous portion of the cathode is a fluid-permeable and halogenresistant material.
  • the material is asbestos deposited in situ on the outer surfaces of the cathode or foraminous projections 18 and the peripheral chamber 16, the diaphragm material facing the anode.
  • other types of diaphragms can be used depending on the reaction and reaction conditions contemplated within the cell.
  • diaphragm materials such as those comprised of synthetic organic materials, such as woven after-chlorinated polyvinyl chloride, polyvinylidene chloride, polypropylene, TEFLON, and the like, may be used.
  • Particularly useful membrane materials are those fabricated from synthetic organic ionex-. change resins such as sulfonated copolymers of styrene and divinyl benzene and the hydrolyzed copolymers of tetrafluoroethylene and a sulfonated perfluorovinyl ether. Electrolytic cells containing the latter membrane material are disclosed in copending application of E. H. Cook, Jr., et al., Ser. No. 212,171, filed Dec. 12,1971. These and other suitable materials are known to those skilled in the art.
  • the cathode structure is adapted to permit use of all types of diaphragms including sheet asbestos, deposited asbestos and synthetics which can be in the form of woven fabrics.
  • the foraminous projections 18 and peripheral chamber 16 are preferably constructed of metal screen mesh which can also be perforated metal plating or the like foraminous structures.
  • the metal parts of the cathode are of a conductive metal and, preferably, are of relatively inexpensive low-carbon steel. However, various other metals can be used such as titanium, nickel, chromium, copper, iron, tantalum, and the like, and alloys thereof, especially stainless steel and other chromium steels, nickel steels and the like. Also, various parts of the cathode can be constructed of copper or other low resistance metals to increase electrical conductivity.
  • the reinforcing means 24 When copper or other low resistance metals are used, it is preferred to construct the reinforcing means 24 of such metals because the reinforcing means serve the dual function of conducting the electrical energy to the foraminous screen surfaces and strengthening the projections. Thus, increased electrical efficiencies can be obtained in the use of the various more conductive metals and alloys.
  • the foraminous mesh screen 26 is reinforced with reinforcing means 24.
  • Reinforcing means 24 is preferably a sheet metal material which is preferably attached to the sidewall of the cathode on at least one side of the cathode.
  • the foraminous mesh screen 26 is attached. as by welding, to the reinforcing means 24.
  • reinforcing means 24 serves the dual function of both supporting and reinforcing the foraminous screen and further in conducting the electrical energy to the extremities of the cathode fingers.
  • Reinforcing means, 24, comprises a metal sheet extending throughout the inner portion of the foraminous metal projection, and preferably at substantially the middle thereof.
  • the reinforcing means contains a plurality of projections, 25, extending from the face of the metal sheet, on either side thereof to the inner surfaces of the foraminous metal projection.
  • These extensions which may be metal or plastic material, are located throughout the metal sheet, preferably equally spaced thereon (as shown on FIG. 3).
  • the reinforcing means is fabricated by boring or punching a series of holes 27 in a preformed metal sheet, 24 and metal pins 25, inserted in the holes in such manner that the extremities of the pins when in place extend from one inner surface of the foraminous metal projection to the opposite inner surface.
  • metal extensions i.e., pins
  • metal extensions can be placed in a random manner throughout the surface of the metal sheet.
  • Another feasible structure is that obtained by punching metal extensions in the metal sheet and bending the extensions to such length that they extend to and provide support for the foraminous metal screen.
  • Other means of providing reinforcing extensions on the metal sheet will be obvious to those skilled in the art.
  • the reinforcing means serves to prevent the warping and flexing of the foraminous metal projection and thus to maintain the cathode and anode distances constant through the surface area of the electrodes.
  • the foraminous metal projection i.e., the reinforced cathode finger
  • the foraminous metal projection includes a plurality of fasteners, e.g., rivets, extending through the foraminous metal projection and the reinforcing means to secure the metal screen to the reinforcing means.
  • fasteners e.g., rivets
  • the foraminous metal screen 26 may be spot welded to the pins 25, where the pins are metallic.
  • the foraminous projections 18, may be fabricated from low-carbon steel mesh screen or the like as described, and may utilize sharp bends so as to provide relatively sharp 90 corners, 36, having a relatively small radius of curvature, or the bends may be more rounded, that is the radius of curvature may approximate a semi-circle.
  • the radius of curvature is a means of measuring curves based on the radius of the are formed by the bend. The measurements given are for the radius of an outside arc, the inside are having a correspondingly smaller radius depending on the foraminous metal thickness.
  • the foraminous projections 18 are conveniently attached, as by welding, to the foraminous section of the peripheral chamber while the reinforcing means 24 is preferably extended to, and attached to the sidewall of the cathode section.
  • cathode section is positioned over cell bottom 28 in a manner whereby anodes 22 project from cell bottom, 28, upwards between foraminous projections 18.
  • the alignment distance between the anode and the foraminous fingers is normally between about /8 and /8 of an inch. Therefore, as the height and width of the cathode structure increases, the criticality of having the anode and cathode functions in proper alignment with each other across the entire height and width of the electrode surfaces becomes increasingly difficult as the size thereof is increased. In the present invention these difficulties are substantially reduced or eliminated and the desired cathode alignment with respect to the anode is more readily obtained.
  • the anode 22 which may be fabricated from graphite or metal such as a valve metal, e.g. titanium, coated with a noble metal or oxide thereof, are secured to cell bottom 28 by means of conductive metal 32.
  • Conductive metal 32 is normally lead or other relatively low melting conductive metal material which can be readily molded about the anode. The particular metal utilized is one which will melt at a temperature below that at which anodes are degraded.
  • the anode 22, may also be mechanically fastened to the bottom 28, by bolt or other means.
  • a sealing material 34 such as an inert organic polymer or resinous material, is applied over the conductive metal 32 to eliminate electrolytic attack by the electrolyte on the conductive metal during cell operation.
  • an alkali metal chloride for example, sodium chloride
  • the brine level within the cell is brought to a point above the anodes within the cell.
  • the hydrostatic head or pressure exerted upon the diaphragm covering the foraminous cathode fingers is varied, thereby varying the flow of electrolyte through the diaphragm into the cathode compartment.
  • the height of the brine above the anodes is about 1 to or more inches.
  • the cathode section of the present invention can be used in a cell used for the electrolysis of alkali metal chloride solutions, including not only sodium chloride but also potassium chloride, lith-' ium chloride, rubidium chloride and cesium chloride.
  • alkali metal chloride solutions including not only sodium chloride but also potassium chloride, lith-' ium chloride, rubidium chloride and cesium chloride.
  • caustic, chlorine and hydrogen are produced in the electrolysis using a diaphragm covering the foraminous cathode.
  • alkali metal chlorates can also be produced by the present cell.
  • the present cathode structure can be utilized in a cell for the electrolysis of hydrogen chloride by electrolyzing hydrogen chloride in combination with an alkali metal chloride.
  • the present cathode structure and cell is highly useful in these and many other aqueous electrolytic processes.
  • the above-described cathode section offers significant advantages when utilized as a cathode section of an electrolytic cell.
  • a most important consideration is the extremely high electrical efficiency in operation at unusually high current capacities of the order of l00,000 amperes and higher. Such high amperages provide for considerably greater productivity for a given cell room area.
  • the novel structure of the cathode of the present invention provides improved control of structural tolerances, thereby permitting the practical operation of large electrolytic cells.
  • the present cell can also be effectively operated at lower amperages, such as about 30,000 amperes or less, and higher amperages upward to 150,000 amperes.
  • a cathode structure for a diaphragm type electrolytic cell comprising a conductive metal enclosure having positioned therein a foraminous metal chamber,
  • said chamber having in communication therewith a plurality of foraminous metal projections, said foraminous metal projections being substantially rectangular in cross section and including therein reinforcing means which comprise a substantially planar metal sheet extending substantially throughout the inner portion of said foraminous metal projections, said metal sheet having a plurality of projections extending from each side thereof to the inner surfaces of said foraminous metal projection.
  • metal projection includes also a plurality of fasteners extending through said foraminous metal projection and reinforcing means thereby securing said projection to said reinforcing means.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
US376782A 1973-07-05 1973-07-05 Cathode structure for electrolytic cell Expired - Lifetime US3871988A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US376782A US3871988A (en) 1973-07-05 1973-07-05 Cathode structure for electrolytic cell
CA202,460A CA1034905A (en) 1973-07-05 1974-06-13 Cathode structure for electrolytic cell
GB2698574A GB1433693A (en) 1973-07-05 1974-06-18 Cathode structure of electrolytic cell
DE2430384A DE2430384A1 (de) 1973-07-05 1974-06-25 Kathodenstruktur fuer eine elektrolytische zelle vom diaphragmatyp
NL7408723A NL7408723A (nl) 1973-07-05 1974-06-27 Kathodestruktuur voor een elektrolysecel met diafragma.
BE146122A BE817133A (fr) 1973-07-05 1974-07-01 Structure de cathode pour une cellule electrolytique
JP49076882A JPS5038699A (de) 1973-07-05 1974-07-03
FR7423109A FR2236026B1 (de) 1973-07-05 1974-07-03
IT24780/74A IT1015659B (it) 1973-07-05 1974-07-04 Struttura catodica per celle elet trolitiche del tipo a diaframma cloro alcali

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US376782A US3871988A (en) 1973-07-05 1973-07-05 Cathode structure for electrolytic cell

Publications (1)

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US3871988A true US3871988A (en) 1975-03-18

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US376782A Expired - Lifetime US3871988A (en) 1973-07-05 1973-07-05 Cathode structure for electrolytic cell

Country Status (9)

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US (1) US3871988A (de)
JP (1) JPS5038699A (de)
BE (1) BE817133A (de)
CA (1) CA1034905A (de)
DE (1) DE2430384A1 (de)
FR (1) FR2236026B1 (de)
GB (1) GB1433693A (de)
IT (1) IT1015659B (de)
NL (1) NL7408723A (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963595A (en) * 1974-06-24 1976-06-15 Olin Corporation Electrode assembly for an electrolytic cell
US4013537A (en) * 1976-06-07 1977-03-22 The B. F. Goodrich Company Electrolytic cell design
US4265719A (en) * 1980-03-26 1981-05-05 The Dow Chemical Company Electrolysis of aqueous solutions of alkali-metal halides employing a flexible polymeric hydraulically-impermeable membrane disposed against a roughened surface cathode
US4343689A (en) * 1978-07-27 1982-08-10 Oronzio De Nora Impianti Elettrochimici S.P.A. Novel electrolysis cell
US4366037A (en) * 1982-02-26 1982-12-28 Occidental Chemical Corporation Method of increasing useful life expectancy of microporous separators
US4461692A (en) * 1982-05-26 1984-07-24 Ppg Industries, Inc. Electrolytic cell
US4560461A (en) * 1982-04-08 1985-12-24 Toagosei Chemical Industry Co., Ltd. Electrolytic cell for use in electrolysis of aqueous alkali metal chloride solutions
WO1986003896A1 (en) * 1984-12-17 1986-07-03 The Dow Chemical Company A method of making an electrochemical cell and an electrochemical cell
WO2006120002A1 (en) * 2005-05-11 2006-11-16 Industrie De Nora S.P.A. Cathodic finger for diaphragm cell
WO2009000914A1 (en) * 2007-06-28 2008-12-31 Industrie De Nora S.P.A. Cathode for electrolysis cell
US9988727B2 (en) * 2012-08-03 2018-06-05 Centre National De La Recherche Scientifique Composite electrodes for the electrolysis of water

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0080288B1 (de) * 1981-11-24 1987-10-07 Imperial Chemical Industries Plc Elektrodenstruktur zur Verwendung in einer elektrolytischen Zelle vom Filterpressentyp
TR22530A (tr) * 1981-11-24 1987-10-12 Ici Plc Elektrolitik pilde kullamilmaya mahsus elektrod yapisi ve bu elektrod yasini havi olan elektrolitik pil

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2987463A (en) * 1958-06-06 1961-06-06 Diamond Alkali Co High amperage diaphragm cell for the electrolysis of brine
US3342717A (en) * 1962-09-20 1967-09-19 Pullman Inc Electrochemical cell
US3493487A (en) * 1966-05-16 1970-02-03 Hooker Chemical Corp Cathode structure for electrolytic diaphragm cell
US3498903A (en) * 1964-03-04 1970-03-03 Georgy Mikirtiechevich Kamarja Electrolytic diaphragm cell for production of chlorine,hydrogen and alkalies
US3755108A (en) * 1971-08-12 1973-08-28 Ppg Industries Inc Method of producing uniform anolyte heads in the individual cells of a bipolar electrolyzer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920028A (en) * 1954-07-12 1960-01-05 Columbia Southern Chem Corp Electrolytic cell series
FR1530541A (fr) * 1966-05-16 1968-06-28 Hooker Chemical Corp Structure de cathode pour cellule électrolytique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2987463A (en) * 1958-06-06 1961-06-06 Diamond Alkali Co High amperage diaphragm cell for the electrolysis of brine
US3342717A (en) * 1962-09-20 1967-09-19 Pullman Inc Electrochemical cell
US3498903A (en) * 1964-03-04 1970-03-03 Georgy Mikirtiechevich Kamarja Electrolytic diaphragm cell for production of chlorine,hydrogen and alkalies
US3493487A (en) * 1966-05-16 1970-02-03 Hooker Chemical Corp Cathode structure for electrolytic diaphragm cell
US3755108A (en) * 1971-08-12 1973-08-28 Ppg Industries Inc Method of producing uniform anolyte heads in the individual cells of a bipolar electrolyzer

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963595A (en) * 1974-06-24 1976-06-15 Olin Corporation Electrode assembly for an electrolytic cell
US4013537A (en) * 1976-06-07 1977-03-22 The B. F. Goodrich Company Electrolytic cell design
US4789443A (en) * 1978-07-27 1988-12-06 Oronzio Denora Impianti Elettrochimici S.P.A. Novel electrolysis cell
US4343689A (en) * 1978-07-27 1982-08-10 Oronzio De Nora Impianti Elettrochimici S.P.A. Novel electrolysis cell
US4265719A (en) * 1980-03-26 1981-05-05 The Dow Chemical Company Electrolysis of aqueous solutions of alkali-metal halides employing a flexible polymeric hydraulically-impermeable membrane disposed against a roughened surface cathode
US4366037A (en) * 1982-02-26 1982-12-28 Occidental Chemical Corporation Method of increasing useful life expectancy of microporous separators
US4560461A (en) * 1982-04-08 1985-12-24 Toagosei Chemical Industry Co., Ltd. Electrolytic cell for use in electrolysis of aqueous alkali metal chloride solutions
US4461692A (en) * 1982-05-26 1984-07-24 Ppg Industries, Inc. Electrolytic cell
WO1986003896A1 (en) * 1984-12-17 1986-07-03 The Dow Chemical Company A method of making an electrochemical cell and an electrochemical cell
WO2006120002A1 (en) * 2005-05-11 2006-11-16 Industrie De Nora S.P.A. Cathodic finger for diaphragm cell
US20080128290A1 (en) * 2005-05-11 2008-06-05 Salvatore Peragine Cathodic finger for diaphragm cell
CN101171370B (zh) * 2005-05-11 2010-09-29 德诺拉工业有限公司 用于隔膜单元的阴极杆
US8349152B2 (en) 2005-05-11 2013-01-08 Industrie De Nora S.P.A. Cathodic finger for diaphragm cell
WO2009000914A1 (en) * 2007-06-28 2008-12-31 Industrie De Nora S.P.A. Cathode for electrolysis cell
US20100096275A1 (en) * 2007-06-28 2010-04-22 Industrie De Nora S.P.A. Cathode for Electrolysis Cell
CN101688319B (zh) * 2007-06-28 2012-06-27 德诺拉工业有限公司 用于电解槽的阴极
US8425754B2 (en) 2007-06-28 2013-04-23 Industrie De Nora S.P.A. Cathode for electrolysis cell
US9988727B2 (en) * 2012-08-03 2018-06-05 Centre National De La Recherche Scientifique Composite electrodes for the electrolysis of water

Also Published As

Publication number Publication date
IT1015659B (it) 1977-05-20
DE2430384A1 (de) 1975-01-23
NL7408723A (nl) 1975-01-07
CA1034905A (en) 1978-07-18
FR2236026B1 (de) 1977-10-07
BE817133A (fr) 1975-01-02
JPS5038699A (de) 1975-04-10
FR2236026A1 (de) 1975-01-31
GB1433693A (en) 1976-04-28

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