Patent ID: 7971809

Claim:
A method of making a fibrous material, the method comprising: shearing a first fiber source, selected from the group consisting of paper, grasses, rice hulls, bagasse, cotton, jute, hemp, flax, bamboo, sisal, abaca, straw, corn cobs, rice hulls, coconut hair and mixtures thereof, without dispersing the fiber source in water, to release fibers from the fiber source and thereby provide a first fibrous material; passing the fibrous material through a first screen having an opening size of 1/8 inch (3.175 mm ) or less, to provide a second fibrous material, the second fibrous material having a porosity of greater than 70% and a BET surface area of greater than 0.5 m2/g; and then shearing the second fibrous material again to provide a third fibrous material.