发明名称 |
Positive electrode active substance, positive electrode material, positive electrode, and non-aqueous electrolyte secondary battery |
摘要 |
[Object] Provided is a means capable of suppressing a decrease in capacity and improving output characteristics of a non-aqueous electrolyte secondary battery when the battery is used for a long period of time.;[Solving Means] Disclosed is a positive electrode active substance for a non-aqueous electrolyte secondary battery, in which the true density/tap density of secondary particles of a lithium composite oxide containing nickel as the main component is within the range of 1.6 to 2.3, and in the secondary particles, the average porosity on the center side of the half (R/2 [μm]) of the particle radius (R) of D50 of the secondary particles is larger than the average porosity on the surface side. |
申请公布号 |
US9450229(B2) |
申请公布日期 |
2016.09.20 |
申请号 |
US201414776165 |
申请日期 |
2014.03.13 |
申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
Uwai Kenta;Kaseda Manabu |
分类号 |
H01M4/131;H01M4/525;H01M10/052;H01M4/505;H01M10/0525;H01M4/02 |
主分类号 |
H01M4/131 |
代理机构 |
Foley & Lardner LLP |
代理人 |
Foley & Lardner LLP |
主权项 |
1. A positive electrode active substance for a non-aqueous electrolyte secondary battery, wherein the true density/tap density of secondary particles of a lithium composite oxide containing nickel as the main component is within the range of 1.6 to 2.3, and the average porosity on the center side of the half (R/2 [μm]) of the particle radius (R) of D50 of the secondary particles is larger than the average porosity on the surface side in the secondary particles. |
地址 |
Yokohama-Shi JP |