C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 31/04 (2006.01) C01B 31/00 (2006.01)
Patent
CA 2410055
A method of preparing graphite intercalation compounds in which graphite particles are immersed in an aqueous electrolyte media comprising both an acid and an oxidizing agent. The immersed graphite particles are subjected to an anodic current and then removed from the electrolyte and rinsed with a solvent. The excess solvent and electrolyte is then removed from the graphite particles. The graphite particles may be placed in a plating barrel which is immersed in the electrolyte and rotated while the graphite particles are subjected to the current. The resultant intercalated graphite has an expansion volume of from between about 100 ml/g to 2000 ml/g when heated to 1000~C.
La présente invention concerne l'élaboration de composés d'insertion graphités par immersion de particules de graphite dans un bain d'électrolyte aqueux comprenant et un acide et un agent oxydant. Dans le bain, les particules de graphite subissent un courant anodique, puis, sorties du bain, elles sont rincées au solvant. Une fois éliminés le solvant et l'électrolyte en excès dans les particules de graphites, on dispose celles-ci dans un tonneau de traitement que l'on plonge dans le bain d'électrolyte et que l'on fait tourner pendant que les particules de graphite subissent le courant. Le graphite d'insertion obtenu se distingue par une dilatation en volume se situant environ entre 100 ml/g et 200 ml/g pendant une chauffe à 1000·C.
Barsukov Igor V.
Zaleski Peter L.
Finlayson & Singlehurst
Superior Graphite Co.
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