公开(公告)号：US11167992B2

公开(公告)日：2021-11-09

申请号：US16458588

申请日：2019-07-01

申请人： GUANGZHOU SPECIAL PRESSURE EQUIPMENT INSPECTION AND RESEARCH INSTITUTE

发明人： Bo Yang ,  Shuanghong Zhang ,  Maodong Li ,  Wei Zhai ,  Fang Wen ,  Yue Li ,  Huachao Guo ,  Zhigang Wang ,  Guojia Huang ,  Shiping Li ,  Zhenling Wu ,  Yingyi He

IPC分类号： C01B32/19 ,  C01B32/192 ,  C01G49/10 ,  C07C275/02

摘要： 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.