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:
Mar. 15, 2016
Filed:
Oct. 21, 2014
The Penn State Research Foundation, University Park, PA (US);
Shinshu University, Matsumoto, Nagano, JP;
Rodolfo Cruz-Silva, Nagano, JP;
Aaron Morelos, Nagano, JP;
Mauricio Terrones, State College, PA (US);
Ana Laura Elias, State College, PA (US);
Nestor Perea-Lopez, State College, PA (US);
Morinobu Endo, Nagano, JP;
THE PENN STATE RESEARCH FOUNDATION, University Park, PA (US);
SHINSHU UNIVERSITY, Nagano, JP;
Abstract
We report a method of preparation of highly elastic graphene oxide films, and their transformation into graphene oxide fibers and electrically conductive graphene fibers by spinning. Methods typically include: 1) oxidation of graphite to graphene oxide, 2) preparation of graphene oxide slurry with high solid contents and residues of sulfuric acid impurities. 3) preparation of large area films by bar-coating or dropcasting the graphene oxide dispersion and drying at low temperature. 4) spinning the graphene oxide film into a fiber, and 5) thermal or chemical reduction of the graphene oxide fiber into an electrically conductive graphene fiber. The resulting films and fiber have excellent mechanical properties, improved morphology as compared with current graphene oxide fibers, high electrical conductivity upon thermal reduction, and improved field emission properties.