GALVANIC CELLS AND (PARTIALLY) LITHIATED LITHIUM BATTERY ANODES WITH INCREASED CAPACITY AND METHODS FOR PRODUCING SYNTHETIC GRAPHITE INTERCALATION COMPOUNDS

The invention relates to a galvanic cell containing a cathode, a lithium-conductive electrolyte separator system, and a synthetic graphite-containing anode. In the manufacture of the cell ( i.e. prior to the first charging cycle), the anode contains or consists of a (partially) lithiated graphite po...

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Main Authors SCHERER, STEFAN, BUHRMESTER, THORSTEN, HABER, STEFFEN, NICKEL, VERA, EMMEL, UTE, WIETELMANN, ULRICH, KRAMER, GERD
Format Patent
LanguageEnglish
French
Published 20.08.2015
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Summary:The invention relates to a galvanic cell containing a cathode, a lithium-conductive electrolyte separator system, and a synthetic graphite-containing anode. In the manufacture of the cell ( i.e. prior to the first charging cycle), the anode contains or consists of a (partially) lithiated graphite powder which is produced from synthetic graphite and lithium powder in a non-electrochemical manner. The invention also relates to a method for (partially) lithiating synthetic graphite in an electroless manner. The invention is characterized in that the particulate synthetic graphite is (partially) lithiated in an electroless manner after mixing with particulate lithium metal powder and by means of a mixing and/or milling process, thereby forming Li graphite intercalates of the composition LiCx (mit x = 6 600). L'invention concerne un élément galvanique comprenant une cathode, un système séparateur d'électrolyte conducteur de lithium et une anode contenant du graphite de synthèse, l'anode contenant ou étant constituée d'une poudre de graphite (partiellement) lithiée constituée de graphite de synthèse et de poudre de lithium et produite par voie non-électrochimique lors de la fabrication de l'élément (c-à-d avant le premier cycle de charge). L'invention concerne également un procédé de lithiation (partielle) sans courant de graphite synthétique, caractérisé en ce que la lithiation (partielle) sans courant du graphite synthétique pulvérulent se produit après le mélange avec une poudre métallique de lithium et est obtenue par brassage et/ou pulvérisation avec formation d'intercalaires du graphite lithium de composition LiCx (où x = 6 600).
Bibliography:Application Number: CA20152939157