| 发明名称 |
POSITIVE ACTIVE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY,
POSITIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, AND
LITHIUM-ION SECONDARY BATTERY |
| 摘要 |
A positive active material for a lithium-ion secondary battery includes a lithium composite oxide particle containing nickel atoms, manganese atoms, and fluorine atoms. The lithium composite oxide particle includes a particle center portion and a surface layer portion that is closer to a surface of the lithium composite oxide particle than the particle center portion is. A fluorine atom concentration Fc (at %) of the particle center portion measured by energy dispersive X-ray spectroscopy is lower than a fluorine atom concentration Fs (at %) of the surface layer portion. |
| 申请公布号 |
US2016028080(A1) |
申请公布日期 |
2016.01.28 |
| 申请号 |
US201514805814 |
申请日期 |
2015.07.22 |
| 申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
SUGIURA Ryuta |
| 分类号 |
H01M4/36;H01M4/58;H01M10/0525 |
主分类号 |
H01M4/36 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A positive active material for a lithium-ion secondary battery, the positive active material comprising:
a lithium composite oxide particle containing nickel atoms, manganese atoms, and fluorine atoms, wherein the lithium composite oxide particle includes a particle center portion and a surface layer portion that is closer to a surface of the lithium composite oxide particle than the particle center portion is, and a fluorine atom concentration Fc (at %) of the particle center portion measured by energy dispersive X-ray spectroscopy is lower than a fluorine atom concentration Fs (at %) of the surface layer portion. |
| 地址 |
Toyota-shi JP |
