PROCESS OF DRY MILLING PARTICULATE MATERIALS
First Claim
1. A process of dry milling particulate materials, wherein at least one of the particulate materials is a layered material, in the presence of a non-layered material, to obtain a composition wherein the layered material is exfoliated and wherein the non-layered material is composited with the exfoliated material, the exfoliated material having a particle size of 10 microns by 5 nm thick, or less, and wherein the dry milling is controlled by controlling the surface energy of the milling media in addition to controlling the hardness of the milling media.
0 Assignments
0 Petitions
Accused Products
Abstract
Graphene produced by media ball milling has very small particle size, a relatively high surface area and unique aspect ratios. It is uniquely suited to make nano-composites or coating by coating or admixing other particles. Metals or metal oxides can be coated or formed into composites with the high surface area, relatively low aspect ratio graphene. If the added particles are larger than the graphene, they are coated with graphene, and if they are about the same approximate size, a nano-composite forms. The nanocomposites are useful for producing electrodes, especially for battery and supercapacitor applications.
-
Citations
41 Claims
- 1. A process of dry milling particulate materials, wherein at least one of the particulate materials is a layered material, in the presence of a non-layered material, to obtain a composition wherein the layered material is exfoliated and wherein the non-layered material is composited with the exfoliated material, the exfoliated material having a particle size of 10 microns by 5 nm thick, or less, and wherein the dry milling is controlled by controlling the surface energy of the milling media in addition to controlling the hardness of the milling media.
-
23. A process of dry milling particulate materials, wherein at least one of the particulate materials is a layered material, in the presence of a particulate material selected from the group consisting of i. ceramic, ii. glass, and iii. quartz, to obtain a composition wherein the layered material is exfoliated and wherein the particulate material is coated with the exfoliated material, the exfoliated material having a particle size of 500 nanometers or less, and wherein the dry milling is controlled by controlling the surface energy of the milling media in addition to controlling the hardness of the milling media.
-
24. A process of dry milling particulate materials, wherein at least one of the particulate materials is a layered material, in the presence of a particulate material selected from the group consisting of i. ceramic, ii. glass, and iii. quartz, to obtain a composition wherein the layered material is exfoliated and wherein the particulate material is coated with the exfoliated material, the exfoliated material having a particle size of 10 microns or more, and the wherein the dry milling is controlled by controlling the surface energy of the milling media in addition to controlling the hardness of the milling media.
- 25. A composition of matter comprising particles composited with graphene wherein the particles are selected from the group consisting essentially of metal particles, and metal oxide particles, wherein the metal and metal oxide particles have a size of 100 microns or smaller.
Specification