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EP0241644A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Anhydrous organic electrolyte

Assignee: VARTA Batterie AG
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Filing: 1987-01-24
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Granted: —
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Expires: 2007-01-24
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Abstract

Abstract Translated from German Galvanische Hochenergiezellen mit negativen Leichtmetallelektroden (Li) enthalten als Elektrolytbestandteil häufig Lösungsmittel, darunter Äther, die aufgrund nachbarständiger Gruppen -0-, =CO oder =N- aktivierte C-H-Bindungen aufweisen und zur Bildung explosibler Peroxide neigen. Stabilisator-Zusätze zum Elektrolyten in Mengen von ca. 100 ppm, neben anderen alkylsubstituierten Phenolen namentlich die Substanz 2,6-Di-tert-butyl-4-methyl-phenol oder leicht oxidierbare schwefel- bzw. phosphororganische Verbindungen wie Trimethylphosphit, verhindern diesen Prozeß und machen eine gefahrlose Handhabung der Zellen auch unter ungewöhnlichen Betriebsbedingungen (z.B. lange Überladung bei hohem Strom) möglich. Galvanic high-energy cells with negative light metal electrodes (Li) often contain solvents as an electrolyte component, including ether, which have neighboring groups -0-, = CO or = N- activated C-H bonds and tend to form explosive peroxides. Stabilizer additives to the electrolyte in amounts of approx. 100 ppm, in addition to other alkyl-substituted phenols, in particular the substance 2,6-di-tert-butyl-4-methylphenol or easily oxidizable organosulfur or organophosphorus compounds such as trimethylphosphite prevent this process and make safe handling of the cells possible even under unusual operating conditions (e.g. long overcharge with high current).

Inventors

  • 👤 Ulrich Dr. Dipl.-Phys. Von Alpen

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-24 11:19
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/16; H01M6/162; H01M6/168; H01M6/164; Y; Y02; Y02E; Y02E60/00; Y02E60/10

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