



Product Name: Sodium ferric pyrophosphate phosphate cathode material
Product model: YNN-4H
Product features: long cycle, excellent thermal stability and high safety.
Application direction: general power battery, polyanion battery, energy storage battery, etc.
|
Item |
Unit |
Standard value |
Typical value |
Test method |
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|
Physical index |
Particle size distribution |
D10 |
μm |
≥1.0 |
1.42 |
GB/T 19077.1 Malvin laser particle size analyzer |
|
|
D50 |
6.5±1.0 |
6.60 |
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|
D90 |
≤15.0 |
13.52 |
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|
D100 |
≤25 |
23.99 |
|||||
|
Specific surface area |
m2/g |
8±1.5 |
8.2 |
GB/T 13390 specific surface area analyzer |
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|
Compaction density |
g/cm3 |
2.15±0.05 |
2.16 |
Compaction densimeter |
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|
Moisture |
ppm |
≤1000 |
780 |
Karl fischer moisture meter |
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|
pH value |
/ |
10±1 |
10.58 |
Ph meter |
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|
Chemical index |
Na |
% |
14.0±0.5 |
14.01 |
ICP |
||
|
Fe |
% |
25±0.5 |
24.6 |
Potassium dichromate method |
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|
P |
% |
19.5±1.0 |
19.2 |
Molybdenum limonene precipitation method |
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|
C |
% |
1.7±0.2 |
1.71 |
Carbon-sulfur meter |
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|
Magnetic substance |
ppb |
≤1000 |
169 |
Magneton adsorption ICP |
|||
|
Microelement |
Mn |
ppm |
≤200 |
13.5 |
ICP |
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|
Mg |
ppm |
≤100 |
23.1 |
||||
|
Cu |
ppm |
≤10 |
N.D |
||||
|
Cr |
ppm |
≤50 |
18.2 |
||||
|
Zn |
ppm |
≤50 |
29.5 |
||||
|
Ni |
ppm |
≤50 |
0.6 |
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Electrochemical performance:
|
Project |
Unit |
Standard value |
Typical value |
Test method |
|
|
First charge capacity |
mAh/g |
≥112 |
115.39 |
1.5-3.8V 0.1C/0.1C |
2032 button half battery |
|
First discharge capacity |
mAh/g |
≥100 |
103.73 |
||
|
Coulombic efficiency for the first time |
% |
≥88 |
89.89 |
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