Large scale production of thinned graphite, graphene, and graphite-graphene composites
AssigneeNanoXplore Inc.
InventorsMarie Bozalina, Philippe Perret, Soroush Nazarpour
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Abstract
Embodiments described herein relate generally to large scale synthesis of thinned graphite and in particular, few layers of graphene sheets and graphene-graphite composites. In some embodiments, a method for producing thinned crystalline graphite from precursor crystalline graphite using wet ball milling processes is disclosed herein. The method includes transferring crystalline graphite into a ball milling vessel that includes a grinding media. A first and a second solvent are transferred into the ball milling vessel and the ball milling vessel is rotated to cause the shearing of layers of the crystalline graphite to produce thinned crystalline graphite.
Claims15
A composition, comprising:
- a plurality of few layer graphene powder particles, the plurality of few layer graphene powder particles having a thickness of 1 graphene layer to about 10 graphene layers and an aspect ratio of at least about 50, the composition having a G-band intensity to D-band intensity ratio between about 14 and about 28,
- wherein the plurality of few layer graphene powder particles have a purity of greater than about 95% by weight, and the plurality of few layer graphene powder particles is not formed into, and does not form part of, a graphene pattern having a predetermined shape.
A composition, comprising:
- a plurality of few layer graphene powder particles, the plurality of few layer graphene powder particles having an average lateral dimension of at least about 500 nm and an aspect ratio of at least about 50, the composition having a G-band intensity to D-band intensity ratio between about 14 and about 28,
- wherein the plurality of few layer graphene powder particles have a purity of greater than about 95% by weight, and wherein the plurality of few layer graphene powder particles is produced by a method comprising a wet ball milling process such that the plurality of few layer graphene powder particles is not formed into, and does not form part of, a graphene pattern having a predetermined shape.
Dependencies are inferred from the claim text.