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2. 发明公开

EP4067304A1 GRAPHENE SEPARATION 无效
公开(公告)号：EP4067304A1
公开(公告)日：2022-10-05
申请号：EP21166333.1
申请日：2021-03-31
申请人： Bright Day Graphene AB
发明人： CARLSSON, Anna
IPC分类号： C01B32/184 , C01B32/19 , C01B32/198 , H01M50/00
摘要： The present invention relates to a method of producing graphene and/or graphene oxide. The method comprises providing a copper-based sheet coated on one side with a carbonaceous material; providing a bath comprising an aqueous solution comprising a salt of at least one ion selected from Li + , Na + , K + , Mg 2+ or Ca 2+ , in which bath a first electrode is arranged; feeding the copper-based sheet into the bath; applying a first voltage between the copper-based sheet and the first electrode; applying a second voltage, reversed as compared to the first voltage, between the copper-based sheet and the first electrode, such that graphene and/or graphene oxide is exfoliated from the carbonaceous material. The present inventio also relates to a system for producing graphene and/or graphene oxide. The present invention also relates to a graphene material formed as crystalline, self-supporting hexagonal flakes. The present invention also relates to a graphene material formed as crystalline, self-supporting flakes comprising dendrites.

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