Method for expanding lamellar forms of graphite and...

Details Method for expanding lamellar forms of graphite and... Method for expanding lamellar forms of graphite and...

D - Textiles, Paper

01

F

D01F 9/12 (2006.01) H01M 4/62 (2006.01)

Patent

CA 2288707

A method for making expanded graphite from lamellar flake graphite comprising first providing lamellar flake graphite particles having at least a minimal purity, then intercalating the lamellar flake graphite particles with an expandable graphite intercalation compound, followed by expanding the graphite intercalation compound to exfoliate the flake graphite particles, and finally air milling the exfoliated flake graphite particles to further delaminate them.

L'invention concerne un procédé de production de graphite expansé à partir de graphite lamellaire, le procédé consistant tout d'abord à prendre des particules de graphite lamellaire présentant au moins une pureté minimale, puis à intercaler entre les particules de graphite lamellaire un composé d'intercalation de graphite pouvant être expansé; ensuite, on soumet le composé d'intercalation de graphite à une expansion pour exfolier les particules de graphite lamellaire, et enfin on soumet les particules de graphite lamellaire exfoliées à un broyage à l'air pour les délaminer d'avantage.

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