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:
Nov. 09, 2021
Filed:
Jul. 01, 2019
Guangzhou Special Pressure Equipment Inspection and Research Institute, Guangzhou, CN;
Bo Yang, Guangzhou, CN;
Shuanghong Zhang, Guangzhou, CN;
Maodong Li, Guangzhou, CN;
Wei Zhai, Guangzhou, CN;
Fang Wen, Guangzhou, CN;
Yue Li, Guangzhou, CN;
Huachao Guo, Guangzhou, CN;
Zhigang Wang, Guangzhou, CN;
Guojia Huang, Guangzhou, CN;
Shiping Li, Guangzhou, CN;
Zhenling Wu, Guangzhou, CN;
Yingyi He, Guangzhou, CN;
Abstract
Provided is a method for preparing graphene by liquid-phase ball milling exfoliation, including following steps: mixing a transition metal halide salt, a nitrogen source substance and an organic solvent to prepare an intercalation agent; mixing the intercalation agent with graphite, carrying out ball milling, and then performing centrifugation to obtain a graphite intercalation compound; washing and filtering the graphite intercalation compound obtained, adding an expansion agent, and carrying out ultrasonic agitation to obtain a graphene dispersion; and washing, filtering and drying the graphene dispersion to obtain graphene powder.