METHOD USING A DIRECTIONAL SOLIDIFICATION FURNACE TO PRODUCE 3N OR HIGHER PURITY SILICON SUITABLE FOR THE MANUFACTURE OF LI-ION BATTERY ANODES

The present invention relates to a method for manufacturing 3N or higher purity silicon usable for the manufacture of anodes of lithium-ion batteries, the method comprising a directed solidification step (104) in a directional solidification furnace in order to purify a metallurgical silicon feedsto...

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Bibliographische Detailangaben
Hauptverfasser:	NICHIPORUK, Oleksiy, KRAIEM, Jed, DEGOULANGE, Julien
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR CHEMISTRY CRYSTAL GROWTH METALLURGY PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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Beschreibung
Zusammenfassung:	The present invention relates to a method for manufacturing 3N or higher purity silicon usable for the manufacture of anodes of lithium-ion batteries, the method comprising a directed solidification step (104) in a directional solidification furnace in order to purify a metallurgical silicon feedstock of 2N purity. La présente invention concerne un procédé de fabrication de silicium de pureté 3N ou supérieure utilisable pour la fabrication d'anodes de batteries lithium-ion, le procédé comprenant une étape de solidification (104) dirigée dans un four de solidification directionnelle afin de purifier une charge de silicium métallurgique de pureté 2N.