| Project |
Unit |
Standard
value |
Typical
value |
Test equipment and
methods |
| chemical
components
|
Li |
% |
3.80~4.60 |
4.13 |
AAS/ICP |
| Mn |
% |
58.00~60.00 |
58.40 |
Ferrous Sulfate Titration
|
| Impurities |
Fe |
ppm |
≦100 |
30 |
AAS/ICP |
| Ni |
ppm |
≦100 |
40 |
AAS/ICP |
| Na |
ppm |
≦3500 |
2200 |
AAS/ICP |
| Cu |
ppm |
≦20 |
7 |
AAS/ICP |
Particle size
distribution |
D10 |
μm |
≧5.00 |
7.0 |
MasterSize2000,ParticleSize
analyser;Hydro2000MU;
Sample-size:2Kg ,
Dispersant: water
Refractive index ：1.33 |
| D50 |
μm |
17.00~22.00 |
19.0 |
| D90 |
μm |
≦45.00 |
38.0 |
| Dmax |
μm |
≦75.00 |
61.0 |
| Crystal structure |
/ |
Measured |
/ |
XRD |
| pH |
/ |
7.0~10.0 |
7.55 |
pH值 |
| Moisture |
ppm |
≦700 |
400 |
(150˚CVacuum drying 2h) |
| Specific surface area |
m²/g |
0.20~0.70 |
0.45 |
3H-2000 type
Adsorption: high purity
N2:He=4:1
BET tube: 9mm U-shaped
tube |
| Tap density |
g/cm³ |
≧1.7 |
1.8 |
Tap density meter
Vibration frequency ：100~300
times/min
amplitude：3mm，
Vibration
times: 4000 ，
Graduated
cylinder ：100ml，
Sample
size ：100g |
| First discharge capacity |
mAh/g |
≧117.0 |
118.0 |
CR2032 battery
0.1C/0.1C，4.3~3.0V |
| First efficiency |
% |
≧93.0 |
95.0 |