US 12,404,177 B2
Exfoliation of graphite to graphene by interface stabilization
Douglas H. Adamson, Mansfield Center, CT (US); Richard Parnas, Ashford, CT (US); and Prabodha Abeykoon, Willimantic, CT (US)
Assigned to University of Connecticut, Farmington, CT (US)
Filed by University of Connecticut, Farmington, CT (US)
Filed on Feb. 17, 2022, as Appl. No. 17/674,389.
Claims priority of provisional application 63/150,767, filed on Feb. 18, 2021.
Prior Publication US 2023/0257271 A1, Aug. 17, 2023
Int. Cl. C01B 32/19 (2017.01); C03C 25/44 (2006.01)
CPC C01B 32/19 (2017.08) [C03C 25/44 (2013.01); C03C 2218/328 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method for graphene production, comprising:
a. providing a continuous graphene recovery system that includes a glass fiber that defines a continuous loop, a first vessel containing graphite and immiscible solvents for exfoliating graphene at a high-energy interface between the immiscible solvents, and a second vessel containing a fluid for separating adsorbed graphene from the glass fiber;
b. moving a segment of the glass fiber loop through the high-energy interface within the first vessel to permit adsorption of exfoliated graphene from the high-energy interface onto the segment of the glass fiber loop;
c. moving the segment of the glass fiber loop through the second vessel to permit separation of the adsorbed exfoliated graphene from the segment of the glass fiber loop and deposit of graphene in the fluid; and
d. repeating steps (a)-(c) to recover additional graphene in the fluid.