基本信息:
- 专利标题： 一种寡层石墨烯及其制备方法与应用
- 专利标题（英）：Few-layered graphene as well as preparation method and application thereof
- 申请号：CN201810043585.3 申请日：2018-01-17
- 公开(公告)号：CN108298530A 公开(公告)日：2018-07-20
- 发明人： 李永峰 , 马新龙 , 李云 , 王德恩 , 田晓娟
- 申请人： 中国石油大学(北京)
- 申请人地址： 北京市昌平区府学路18号
- 专利权人： 中国石油大学(北京)
- 当前专利权人： 中国石油大学(北京)
- 当前专利权人地址： 北京市昌平区府学路18号
- 代理机构： 北京三友知识产权代理有限公司
- 代理人： 闫加贺; 姚亮
- 主分类号： C01B32/19
- IPC分类号： C01B32/19 ; H01M4/587 ; H01M10/0525
The invention provides few-layered graphene as well as a preparation method and an application thereof. The few-layered graphene is prepared through steps as follows: natural flake graphite as a raw material is intercalated by CO2 fluid under the supercritical condition, and pressure is relieved rapidly after intercalation. The provided preparation method can realize industrial batch production ofthe few-layered graphene, has simple process and lower operation cost, and the obtained few-layered graphene contains 1-10 layers. The few-layered graphene is used as a negative electrode material ofa lithium ion battery, can provide a lower and stable working voltage and has a wider voltage platform under the same charging and discharging test conditions as compared with commercial graphite; besides, the few-layered graphene has better rate capability in terms of capacity and has higher reversible capacity under different current densities.