The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2024
Filed:
Feb. 08, 2019
University of Maryland, College Park, College Park, MD (US);
Trinity Rail Group, Llc, Dallas, TX (US);
Liangbing Hu, Potomac, MD (US);
Yubing Zhou, College Park, MD (US);
Chaoji Chen, Hyattsville, MD (US);
Teng Li, Potomac, MD (US);
Robert W. Foster, Dallas, TX (US);
Dapeng Liu, College Park, MD (US);
University of Maryland, College Park, College Park, MD (US);
Trinity Rail Group, LLC, Dallas, TX (US);
Abstract
Cellulose nanofibers (CNF) act as a dispersing agent to directly exfoliate graphite in an aqueous solution using sonication. The resulting suspension has graphite flakes, each having 2-20 monolayers, a relatively large lateral dimension, and a plurality of CNF decorating its surfaces and edges. The dispersing effect of the CNF allows the graphite-CNF suspension to be stored without degradation until desired use. The graphite-CNF suspension can be used to form various composite structures, such as by spraying, coating, pouring, extruding, or printing the suspension, and then drying the suspension. The resulting composite structures have improved tensile strength and toughness due to hydrogen bond interactions between the CNF and graphite.