发明名称 |
POSITIVE ELECTRODE ACTIVE MATERIAL OF POWER STORAGE DEVICE, POWER STORAGE DEVICE, ELECTRICALLY PROPELLED VEHICLE, AND METHOD FOR MANUFACTURING POWER STORAGE DEVICE |
摘要 |
An object is to improve the characteristics of a power storage device such as a charging and discharging rate or a charge and discharge capacity. The grain size of particles of a positive electrode active material is nano-sized so that a surface area per unit mass of the active material is increased. Specifically, the grain size is set to greater than or equal to 10 nm and less than or equal to 100 nm, preferably greater than or equal to 20 nm and less than or equal to 60 nm. Alternatively, the surface area per unit mass is set to 10 m2/g or more, preferably 20 m2/g or more. Further, the crystallinity of the active material is increased by setting an XRD half width to greater than or equal to 0.12° and less than 0.17°, preferably greater than or equal to 0.13° and less than 0.16°. |
申请公布号 |
US2016218367(A1) |
申请公布日期 |
2016.07.28 |
申请号 |
US201615091770 |
申请日期 |
2016.04.06 |
申请人 |
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
KAWAKAMI Takahiro;YAMAKAJI Masaki |
分类号 |
H01M4/58;H01M10/04;B60L11/18;H01M4/136;H01M10/0525 |
主分类号 |
H01M4/58 |
代理机构 |
|
代理人 |
|
主权项 |
1. (canceled) |
地址 |
Atsugi-shi JP |