GB2005918A - Electrolyte system for electrolytic capacitors - Google Patents

Electrolyte system for electrolytic capacitors

Info

Publication number
GB2005918A
GB2005918A GB7839868A GB7839868A GB2005918A GB 2005918 A GB2005918 A GB 2005918A GB 7839868 A GB7839868 A GB 7839868A GB 7839868 A GB7839868 A GB 7839868A GB 2005918 A GB2005918 A GB 2005918A
Authority
GB
United Kingdom
Prior art keywords
ethylene glycol
ammonium
acid
mole
amine
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.)
Granted
Application number
GB7839868A
Other versions
GB2005918B (en
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.)
Atos Origin IT Services Inc
Original Assignee
Sangamo Weston Inc
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 Sangamo Weston Inc filed Critical Sangamo Weston Inc
Publication of GB2005918A publication Critical patent/GB2005918A/en
Application granted granted Critical
Publication of GB2005918B publication Critical patent/GB2005918B/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004Details
    • H01G9/022Electrolytes; Absorbents

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A non-aqueous electrolyte for aluminium-anode capacitors comprises ethylene glycol and a salt such as the ammonium or amine salt of an unsaturated aliphatic dicarboxylic acid (for example, fumaric acid or maleic acid), the amine (such as triethylamine) containing up to 12 carbon atoms, with or without a small amount of an additive such as boric acid, phosphoric acid, ammonium dihydrogen phosphate, ammonium pentaborate, ammonium phosphate and mixtures thereof. The electrolyte offers high electrical conductivity, and increased stability and shelf life, under conditions of no voltage, for low voltage capacitors having high capacitance ratings. In one embodiment, the combination of ethylene glycol, as the solvent, with between about 0.001 to 0.1 mole of unsaturated dicarboxylic acid per mole of ethylene glycol and about 0.001 to 0.2 mole of the amine per mole of ethylene glycol is used.
GB7839868A 1977-10-11 1978-10-09 Electrolyte system for electrolytic capacitors Expired GB2005918B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84118177A 1977-10-11 1977-10-11

Publications (2)

Publication Number Publication Date
GB2005918A true GB2005918A (en) 1979-04-25
GB2005918B GB2005918B (en) 1982-03-10

Family

ID=25284238

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7839868A Expired GB2005918B (en) 1977-10-11 1978-10-09 Electrolyte system for electrolytic capacitors

Country Status (4)

Country Link
CA (1) CA1119395A (en)
DE (1) DE2844069A1 (en)
FR (1) FR2406299A1 (en)
GB (1) GB2005918B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165995A (en) * 1984-10-19 1986-04-23 Sprague Electric Co Aluminium electrolytic capacitor
US4823236A (en) * 1988-05-23 1989-04-18 Sprague Electric Company High temperature aluminum electrolytic capacitor
WO1996019815A1 (en) * 1994-12-21 1996-06-27 Boundary Technologies, Inc. Electrolyte for electrolytic capacitor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373176A (en) * 1981-09-30 1983-02-08 Sprague Electric Company Electrolytic capacitor for at least 200 V service
US4747021A (en) * 1986-08-15 1988-05-24 Asahi Glass Company Ltd. Electrolytic capacitor

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1420433A (en) * 1964-10-05 1965-12-10 Safco Condensateurs electrolytic capacitor electrolyte
DE1282187B (en) * 1964-12-21 1968-11-07 Condensateurs Sic Safco Fa Electrolyte for electrolytic capacitors
SE306789B (en) * 1966-01-27 1968-12-09 Ericsson Telefon Ab L M
US3509425A (en) * 1968-01-10 1970-04-28 Gen Electric Electrolytic capacitor and electrolyte material therefor
US3518499A (en) * 1968-01-29 1970-06-30 Mallory & Co Inc P R Electrolyte for electrolytic capacitors
DE1764869C3 (en) * 1968-08-22 1974-06-06 Philips Patentverwaltung Gmbh, 2000 Hamburg Electrolyte for electrolytic capacitors
DE1805383C3 (en) * 1968-10-26 1981-09-03 Les Condensateurs Sic-Safco, Colombes, Hauts-de-Seine Electrolyte for electrolytic capacitors with aluminum anodes
DE2049098C3 (en) * 1970-10-06 1986-10-02 Roederstein & Türk KG Fabrik elektrischer Bauelemente, 7815 Kirchzarten Electrolyte for electrolytic capacitors
US3812039A (en) * 1971-02-25 1974-05-21 Sanyo Electric Co Electrolyte for electrolytic capacitor
JPS5199258A (en) * 1975-02-27 1976-09-01 Sanyo Electric Co
DE2458452C3 (en) * 1974-12-10 1978-04-20 Siemens Ag, 1000 Berlin Und 8000 Muenchen Aluminum electrolytic capacitor
US4117531A (en) * 1977-05-25 1978-09-26 Sprague Electric Company Electrolytic capacitor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165995A (en) * 1984-10-19 1986-04-23 Sprague Electric Co Aluminium electrolytic capacitor
US4823236A (en) * 1988-05-23 1989-04-18 Sprague Electric Company High temperature aluminum electrolytic capacitor
WO1996019815A1 (en) * 1994-12-21 1996-06-27 Boundary Technologies, Inc. Electrolyte for electrolytic capacitor

Also Published As

Publication number Publication date
GB2005918B (en) 1982-03-10
FR2406299A1 (en) 1979-05-11
CA1119395A (en) 1982-03-09
DE2844069A1 (en) 1979-04-19
FR2406299B1 (en) 1984-02-10

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee