Brief analysis of three factors
|
Three Factors |
Chemical property |
Effect |
Ratio |
|
Ni |
Active Metal |
Improve volume energy density |
NCM111, NCM523 NCM622, NCM811 |
|
Co |
Active Metal |
Stabilize structure of materials |
|
|
Mn |
Inactive metal |
Improve safety |
|
|
With more nickel contents, the specific capacity of NCM anode material increases gradually, and the energy density of the cell also increases. |
|||
Characteristics of NCM
*High energy density
*High safety performance
*High safety performance
*Stable discharge platform
*Good processability
Property Parameter Table of NCM
(The data comes from Foshan Brunp Recycling Technology Co., Ltd., which is a domestic company which uses waste batteries as raw materials to prepare lithium nickel cobalt manganese oxide.)
|
Tap density |
(g/cm3) 2.0-2.4 |
|
Specific surface area |
(m2/g) 0.3-0.8 |
|
Particle size |
D50(um) 9-12 |
|
First discharging capacity |
(0.2C)>148 |
|
Ni (%) |
19.5-21.5 |
|
Co (%) |
19.5-21.5 |
|
Mn (%) |
18.0-20.0 |
|
Ni+Co+Mn (%) |
58.0-62.0 |
|
First reversing efficiency(%) |
>88 |
Electron microscopic particle diagram of NCM
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