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. 15, 2017
Filed:
Jun. 05, 2015
Oregon State University, Corvallis, OR (US);
Sharp Laboratories of America, Inc., Camas, WA (US);
Xiulei Ji, Corvallis, OR (US);
Wei Luo, Corvallis, OR (US);
Clement Bommier, Corvallis, OR (US);
Yuhao Lu, Vancouver, WA (US);
Sean Vail, Vancouver, WA (US);
Jong-Jan Lee, Camas, WA (US);
Oregon State University, Corvallis, OR (US);
Sharp Laboratories of America, Camas, WA (US);
Abstract
A method is provided for fabricating a graphene-doped, carbohydrate-derived hard carbon (G-HC) composite material for alkali metal-ion batteries. The method provides graphene oxide (GO) dispersed in an aqueous solution. A carbohydrate is dissolved into the aqueous solution and subsequently the water is removed to create a precipitate. In one aspect, the carbohydrate is sucrose. The precipitate is dehydrated and exposed to a thermal treatment of less than 1200 degrees C. to carbonize the carbohydrate. The result is the formation of a graphene-doped, carbohydrate-derived hard carbon (G-HC) composite. Typically, the G-HC composite is made up of graphene in the range of 0.1 and 20% by weight (wt %), and HC in the range of 80 to 99.9 wt %. The G-HC composite has a specific surface area of less than 10 square meters per gram (m/g). A G-HC composite suitable for use in alkali metal-ion batteries electrodes is also provided.