| Appearance |
/ |
/ |
Gray-black powder, uniform color, no agglomeration |
Visual inspection |
| PH |
8.0~10.0 |
/ |
9.57 |
PHS-3CPH meter: Mix LFP and distilled water in a ratio of 1:9, let it stand, and take the supernatant to test the pH value |
| Water content |
<1000 |
ppm |
821 |
Coulomb moisture meter: test after heating at 200℃. |
| Discharge capacity |
≥150.0 |
mAh/g |
157.83 |
(0.1C charge and discharge for the first time) |
Make button batteries, charge and discharge at 0.1C in CT-3008W-5V5mA-S4 charger and discharge machine |
| Charge capacity |
≥157.0 |
mAh/g |
163.37 |
| Charge and discharge efficiency |
≥95.0 |
% |
96.6 |
(0.1C charge and discharge for the first time) |
| Powder compaction density |
≥2.32 |
g/cm³ |
2.43 |
UTM7305 electronic test press |
| Specific surface area |
9.0±3.0 |
㎡/g |
9.91 |
Nitrogen adsorption method, Tristar3020 specific surface meter |
| Loose density |
≥0.30 |
g/cm³ |
0.4 |
BT-303 tap density meter |
| Tap density |
≥0.80 |
g/cm³ |
1.07 |
| D10 |
≥0.35 |
um |
0.53 |
The test was conducted by Malvern 2000 laser particle size analyzer, with the following parameters: material refractive index 2.6, water as the medium (refractive index 1.33), ultrasonic intensity value 10, stirring speed 2000 rpm. After adding the sample to be tested and stirring evenly, ultrasonic vibration was turned on for 1 minute, with a light shielding degree of 10%~15%, and the test was started. |
| D50 |
0.60~1.80 |
um |
1.13 |
| D90 |
≤4.50 |
um |
2. 39 |
| D97 |
≤7.50 |
um |
3.25 |
| Item |
Li(%) |
Fe(%) |
P(%) |
C(%) |
Instrument name |
| Element content |
4.3±0.3 |
34.5±1.0 |
19.5±1.0 |
0.90-1.40 |
710ICP-0ES, high frequency carbon and sulfur analyzer |
| 4.47 |
34.19 |
19.07 |
1.09 |
| Na(%) |
Ca(%) |
Mg(%) |
Cr(%) |
Mn(%) |
Ni(%) |
Cu(%) |
Zn(%) |
| ≤0.0300 |
≤0.0300 |
≤0.0300 |
≤0.0150 |
≤0.0400 |
≤0.0100 |
≤0.0050 |
≤0.0050 |
