Exfoliation of graphene by multilayer coextrusion

摘要

Exfoliation of graphene from graphite using multilayer coextrusion is generally disclosed. In some example embodiments, graphite may be dispersed within a first processing material, and the first processing material and a second processing material may be co-extruded through a plurality of series coupled layer multiplication dies to exfoliate graphene from the graphite. The graphene may be separated from the resulting multi-layered material. In some example embodiments, graphite flake and/or expanded graphite may be dispersed within the first processing material.

主权项

1. An apparatus to produce graphene from graphite, the apparatus comprising:
a multilayer co-extrusion device comprising:
a feed block including a first processing material and a second processing material, the first processing material including a first graphite material and the second processing material including a second graphite material;a plurality of series-coupled layer multiplication dies coupled to the feed block and configured to shear the first graphite material and the second graphite material, to exfoliate graphene therefrom by co-extrusion of the first processing material and the second processing material through the plurality of series-coupled layer multiplication dies, and to produce a resulting material including a plurality of alternating layers of the first processing material and the second processing material; anda bath including a solvent positioned to accept the resulting material.