EP0107135B1 - Bipolare Elektrode - Google Patents

Bipolare Elektrode Download PDF

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Publication number
EP0107135B1
EP0107135B1 EP83110073A EP83110073A EP0107135B1 EP 0107135 B1 EP0107135 B1 EP 0107135B1 EP 83110073 A EP83110073 A EP 83110073A EP 83110073 A EP83110073 A EP 83110073A EP 0107135 B1 EP0107135 B1 EP 0107135B1
Authority
EP
European Patent Office
Prior art keywords
electrode
steel
cathode
anode
titanium
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
Application number
EP83110073A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0107135A1 (de
Inventor
Peter Fabian
Waltraud Dipl.-Ing. Werdecker
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.)
De Nora Deutschland GmbH
Original Assignee
Heraeus Elektroden GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6176595&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0107135(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Heraeus Elektroden GmbH filed Critical Heraeus Elektroden GmbH
Priority to AT83110073T priority Critical patent/ATE30253T1/de
Publication of EP0107135A1 publication Critical patent/EP0107135A1/de
Application granted granted Critical
Publication of EP0107135B1 publication Critical patent/EP0107135B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • 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
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60—Constructional parts of cells
    • C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections

Definitions

  • the invention relates to a bipolar electrode in the form of a flat plate for use in electrochemical processes with at least one anodic electrode part made of titanium, tantalum, zirconium, niobium or tungsten and a cathodic electrode part made of steel, the narrow sides of the two electrode parts being arranged between them plate-shaped intermediate piece are welded.
  • AT-PS 352 148 initially refers to the connection of incompatible materials, such as titanium and steel, by means of explosion welding, the disadvantage of which being the dissolution of the weld site due to titanium hydride formation after prolonged use as an electrode.
  • an electrolysis cell with flat, bipolar electrodes is known, arranged in the plate-shaped anodic electrode parts made of valve metal in one plane with plate-shaped cathodic electrode parts, for example made of steel, and by a weldable to both electrode materials, plate-shaped intermediate piece, for. B. of copper, are interconnected; the intermediate piece is intended to prevent the migration of hydrogen ions from the cathode part to the anode part.
  • the adapter is provided with a seal.
  • the electrolysis cell contains several separating elements with receiving openings or through openings for the electrodes.
  • the object of the invention is to provide a bipolar electrode of the type mentioned in the introduction, which is formed in one piece and from a combination of so-called incompatible materials.
  • incompatible materials such as B. titanium and steel or tantalum and steel
  • the bipolar electrode should have sufficient corrosion resistance to the electrolyte.
  • the bipolar electrode has an anodic electrode part 1 and a cathodic electrode part 2. Both are connected in one plane via an intermediate piece 3, as shown in the figures.
  • the intermediate piece 3 consists in its part 5 facing the anodic electrode part 1 made of anodic material and in its side 6 facing the cathodic electrode part 2 made of cathodic material. Both areas are separated by a boundary or butting surface 4, only visible from the outside as a line and the thickness of which essentially corresponds to the electrode parts.
  • the intermediate piece 3 designed as a composite body is arranged between the joints on the narrow sides of anodic electrode part 1 and cathodic electrode part 2, which face each other, and is connected to them by welding.
  • valve metals as are usually used for dimensionally stable anodes, namely titanium, tantalum, zirconium, niobium and as a further metal are suitable as the material of the anodic electrode part 1 Tungsten.
  • Such a base body of the anode material also has an electrically conductive surface made of, for example, a platinum metal, a platinum metal oxide or a conductive metal oxide or oxide mixture which is resistant to the anolyte.
  • Valve metals are metals that form non-conductive oxides that are resistant to the anolyte.
  • An expanded metal, mesh or grid anode is preferred because of the larger electrocatalytically active area and the good flow possibilities of the electrolyte.
  • the cathodic electrode part is perforated and made of flat sheet metal or plates; it consists of an electrically conductive substance resistant to the catholyte, such as steel, nickel, iron or alloys of these materials.
  • the surface of the cathode is advantageously coated with nickel or a nickel alloy or compound.
  • the composite body produced in this way has an intermetallic phase connection, with good fine grain of the materials and particularly high density, that is to say without defects such as hairline cracks and the like. This makes it possible. to achieve a good current flow and thus also low potential losses.
  • the hot isostatic pressing process was carried out in a known manner in a W.C. Heraeus GmbH, Hanau.
  • composite electrodes of the bipolar type can also be assembled from a multiplicity of anode and cathode parts assembled in pairs with intermediate pieces to form a one-piece flat, plate-shaped electrode.
  • the configuration of the electrode is only dependent on the size of the cell and the arrangement therein, as well as the desired electrolyte flow and the current supply and discharge lines.
  • the bipolar electrodes according to the invention can be used in electrochemical cells, in particular they are well suited for the electrolysis of aqueous solutions of the alkali metal chlorides.
  • a bipolar electrode is not directly connected to the power supply, but one surface acts as an anode and the other as a cathode when the current flows through the cell. Brackets are suitable for the power supply, each connecting the same-pole parts of the electrodes.
  • the new bipolar electrodes can advantageously be arranged in the cell in such a way that a cathode region is opposite an anode region.
  • the direction of flow of the electrolytes can run between the plate-shaped electrodes along their planes or in each case through the perforation of the electrodes. There may be an electrolyte circulation between the inlet and outlet of the cell.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Cold Cathode And The Manufacture (AREA)
  • Tires In General (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Bipolar Transistors (AREA)
  • Electrodes Of Semiconductors (AREA)
EP83110073A 1982-10-26 1983-10-08 Bipolare Elektrode Expired EP0107135B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83110073T ATE30253T1 (de) 1982-10-26 1983-10-08 Bipolare elektrode.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3239535A DE3239535C2 (de) 1982-10-26 1982-10-26 Verfahren zur Herstellung einer bipolaren Elektrode
DE3239535 1982-10-26

Publications (2)

Publication Number Publication Date
EP0107135A1 EP0107135A1 (de) 1984-05-02
EP0107135B1 true EP0107135B1 (de) 1987-10-14

Family

ID=6176595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110073A Expired EP0107135B1 (de) 1982-10-26 1983-10-08 Bipolare Elektrode

Country Status (8)

Country Link
US (1) US4564433A (enrdf_load_stackoverflow)
EP (1) EP0107135B1 (enrdf_load_stackoverflow)
JP (1) JPS59501911A (enrdf_load_stackoverflow)
AT (1) ATE30253T1 (enrdf_load_stackoverflow)
CA (1) CA1230081A (enrdf_load_stackoverflow)
DE (2) DE3239535C2 (enrdf_load_stackoverflow)
FI (1) FI75370B (enrdf_load_stackoverflow)
WO (1) WO1984001789A1 (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3342449A1 (de) * 1983-11-24 1985-06-05 Uhde Gmbh, 4600 Dortmund Elektrolytische zelle fuer die elektrolyse von waessrigem halogenidhaltigem elektrolyt
US5013409A (en) * 1989-03-23 1991-05-07 Doug Czor Electrodeposition process
US5225061A (en) * 1991-05-24 1993-07-06 Westerlund Goethe O Bipolar electrode module
JP2001266989A (ja) * 2000-03-23 2001-09-28 Tyco Electronics Amp Kk 電気コンタクト
AT9199U1 (de) * 2005-09-13 2007-06-15 Plansee Se Werkstoffverbund mit explosionsgeschweisstem zwischenstück
US9026190B2 (en) 2010-11-17 2015-05-05 Rhythm Check, Inc. Portable physiological parameter detection and monitoring device with integratable computer memory and communication disk, systems and methods of use thereof
ITMI20120158A1 (it) * 2012-02-07 2013-08-08 Industrie De Nora Spa Elettrodo per l¿abbattimento elettrochimico della domanda chimica di ossigeno in reflui industriali

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3849281A (en) * 1973-07-23 1974-11-19 Diamond Shamrock Corp Bipolar hypochlorite cell
US4108756A (en) * 1973-10-30 1978-08-22 Oronzio De Nora Impianti Electtrochimici S.P.A. Bipolar electrode construction
IT1003156B (it) * 1973-10-30 1976-06-10 Oronzio De Nora Impianti Elettrolizzatore per la produzione di composti ossigenati del cloro da soluzioni di cloruri alcalini
US4059216A (en) * 1975-12-15 1977-11-22 Diamond Shamrock Corporation Metal laminate strip construction of bipolar electrode backplates
US4017375A (en) * 1975-12-15 1977-04-12 Diamond Shamrock Corporation Bipolar electrode for an electrolytic cell
JPS5413473A (en) 1977-02-17 1979-01-31 Kurorin Engineers Kk Double polar electrode
US4402809A (en) * 1981-09-03 1983-09-06 Ppg Industries, Inc. Bipolar electrolyzer

Also Published As

Publication number Publication date
US4564433A (en) 1986-01-14
EP0107135A1 (de) 1984-05-02
FI75370B (fi) 1988-02-29
FI842512L (fi) 1984-06-20
JPH0569917B2 (enrdf_load_stackoverflow) 1993-10-04
WO1984001789A1 (en) 1984-05-10
ATE30253T1 (de) 1987-10-15
JPS59501911A (ja) 1984-11-15
DE3239535A1 (de) 1984-04-26
DE3374073D1 (en) 1987-11-19
FI842512A0 (fi) 1984-06-20
DE3239535C2 (de) 1987-02-05
CA1230081A (en) 1987-12-08

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