GB824901A - Improvements in or relating to methods of producing electrodes for electrolytic capacitors - Google Patents

Improvements in or relating to methods of producing electrodes for electrolytic capacitors

Info

Publication number
GB824901A
GB824901A GB9873/58A GB987358A GB824901A GB 824901 A GB824901 A GB 824901A GB 9873/58 A GB9873/58 A GB 9873/58A GB 987358 A GB987358 A GB 987358A GB 824901 A GB824901 A GB 824901A
Authority
GB
United Kingdom
Prior art keywords
hydride
layer
ccm
vacuo
core
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
GB9873/58A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB824901A publication Critical patent/GB824901A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
    • H01G9/052—Sintered electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/0029—Processes of manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/0029—Processes of manufacture
    • H01G9/0032—Processes of manufacture formation of the dielectric layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/0029—Processes of manufacture
    • H01G9/0036—Formation of the solid electrolyte layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
    • H01G9/0425—Electrodes or formation of dielectric layers thereon characterised by the material specially adapted for cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/07—Dielectric layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/15—Solid electrolytic capacitors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Powder Metallurgy (AREA)

Abstract

Electrolytic capacitor electrodes of large effective surface area are produced by coating a core with a layer of hydride of Ta or Nb from a suspension of the hydride and heating in vacuo or in an inert gas to convert the layer into porous sintered metal. The core may be of the same metal (e.g. Ta) as the layer obtained; while the deposition of hydride may be by electrophoresis. In an example a suspension of 1.5 gm. hydride of Ta powder mean size 1 micron is formed in 100 ccm. methyl alcohol containing 5 ccm. of 0.01N aluminium nitrate solution. A Ta wire core cathode and a Ag anode carrying 100 mA. per sq. cm. at 200 volts produce an electrophoretic coating of Ta hydride about 10m thick on the Ta cathode, which is subsequently heated in vacuo at 1900 DEG C. for 3 minutes to give a porous Ta layer. It is then formed in saturated Na Cl solution at 6 volts. In a second example 6 gm. powdered Ta hydride are added to 3 gm. of a mix of 320 gm. polystyrene which has been diluted with 6 ccm. benzene. A layer of the hydride 50m thick is formed on a Ta wire core which is heated in vacuo to 2000 DEG C. for 2 minutes.
GB9873/58A 1957-03-30 1958-03-27 Improvements in or relating to methods of producing electrodes for electrolytic capacitors Expired GB824901A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL824901X 1957-03-30

Publications (1)

Publication Number Publication Date
GB824901A true GB824901A (en) 1959-12-09

Family

ID=19841006

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9873/58A Expired GB824901A (en) 1957-03-30 1958-03-27 Improvements in or relating to methods of producing electrodes for electrolytic capacitors

Country Status (1)

Country Link
GB (1) GB824901A (en)

Similar Documents

Publication Publication Date Title
ES327009A1 (en) Improvements in or relating to electrodes for electrolysis
ES421931A1 (en) Method of making long-term electrode for electrolytic processes
NL112644C (en) Process for manufacturing an anode intended for electrolytic processes in which chlorine ions are oxidized, whereby a solid core of a base metal is provided with a porous coating of a noble metal as well as an anode thus manufactured
GB962232A (en) Solid capacitors and improved method of making the same
GB1198600A (en) Improvements in or relating to Getters.
NO127519B (en)
US3325698A (en) Electrical capacitor electrode and method of making the same
GB824901A (en) Improvements in or relating to methods of producing electrodes for electrolytic capacitors
US2798037A (en) Aluminum oxide films
GB1415269A (en) Manufacture of composite wires
US2301390A (en) Primary cell
GB997779A (en) Solid electrolytic capacitors and method of manufacture
GB1101807A (en) Electrodes for fuel cells and electrochemical measuring cells
DE1103710B (en) Electrolyte for the electrophoretic production of an electrically insulating layer
GB743692A (en) Process for polishing articles of aluminium and aluminium alloys by anodic treatment in an electrolyte
US3404030A (en) Method for impregnating porous battery supports with meltable hydrated salts
GB1058477A (en) Improvements in/or relating to methods of manufacturing anodes for electrolytic capacitors
GB1025115A (en) Method of making titanium capacitors
Hinde et al. Sealing of aluminium oxide anodic films
GB926010A (en) Electrolytic capacitor
GB940974A (en) Improvements in or relating to electrolytic capacitors and to electrodes for use therein
GB835076A (en) Electrolytic capacitors
SU129754A1 (en) A method of manufacturing a metal sponge on the cores of the cathodes
GB996720A (en) Process for the production of solid electrolytic capacitors
GB676913A (en) Improvements relating to the production of adherent coatings on metallic bodies