发明名称 |
Method for modifying positive electrode materials for lithium-ion batteries |
摘要 |
A method for modifying a positive electrode material for a lithium-ion battery. The method includes: a) stirring a liquid polyacrylonitrile (LPAN) solution at the temperature of between 80 and 300° C. for between 8 and 72 h to yield a cyclized LPAN solution; b) adding positive electrode material for a lithium-ion battery, in a powder form, to the cyclized LPAN solution, and evenly mixing a resulting mixture; c) grinding the mixture, and drying the mixture at room temperature; and d) calcining the mixture at the temperature of between 500 and 1800° C. for between 6 and 24 h in the presence of an inert gas to form a graphene-like structure by the cyclized LPAN. The graphene-like structure is evenly distributed in the positive electrode material of the lithium-ion battery to yield a graphene-like structure modified positive electrode material of the lithium-ion battery. |
申请公布号 |
US9123953(B2) |
申请公布日期 |
2015.09.01 |
申请号 |
US201313924674 |
申请日期 |
2013.06.24 |
申请人 |
Shen Zhen University |
发明人 |
Liu Jianhong;Gui Dayong;Zhang Qianling;He Chuanxin;Zhu Caizhen |
分类号 |
H01M4/88;H01M4/36;H01M4/1391;H01M4/62;H01M4/131 |
主分类号 |
H01M4/88 |
代理机构 |
Matthias Scholl P.C. |
代理人 |
Matthias Scholl P.C. ;Scholl Matthias |
主权项 |
1. A method for modifying a positive electrode material for a lithium-ion battery, the method comprising:
a) stirring a liquid polyacrylonitrile (LPAN) solution at a temperature of between 80 and 300° C. for between 8 and 72 h to yield a cyclized LPAN solution; b) adding positive electrode material for a lithium-ion battery, in a powder form, to the cyclized LPAN solution, and evenly mixing a resulting mixture; c) grinding the mixture, and drying the mixture at room temperature; and d) calcining the mixture at a temperature of between 500 and 1800° C. for between 6 and 24 h in the presence of an inert gas whereby forming a graphene-like structure by the cyclized LPAN, the graphene-like structure being evenly distributed in the positive electrode material of the lithium-ion battery to yield a graphene-like structure modified positive electrode material of the lithium-ion battery. |
地址 |
Shenzhen CN |