Preparation of Graphene By Mechanically Thinning Graphite Materials

The invention relates to a method for producing a dispersion of graphene particles or flakes in a liquid medium L, including the following steps: (a) providing a bar or block (5) of solid graphite material M; (b) rubbing said material M against the surface S (2) of a substrate so as to create a rubbing trace of said material M on said surface S (2) of said substrate; (c) dipping said substrate in a liquid medium L (6) and subjecting said liquid medium L (6) to ultrasounds so as to obtain a dispersion of graphene particles or flakes in said liquid medium L (6), wherein steps (b) and (c) can be carried out at least partially in series, or at the same time.

Patents:
WO 2,011,055,039

Inventor(s): JANOWSKA IZABELA [FR]; BEGIN DOMINIQUE [FR]; CHIZARI KAMBIZ [FR]; ERSEN OVIDIU [FR]; BERNHARDT PIERRE [FR]; ROMERO THIERRY [FR];

Type of Offer: Sale



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