The role of lithium-ion battery binders is to ensure a strong bond between the active material, conductive carbon black, and current collector, preventing material pulverization and electrode peeling, and ensuring normal charging and discharging of the battery. Relying on excellent properties, PVDF is widely used as the main binder for lithium-ion battery cathode materials.
The role of lithium-ion battery binders is to ensure a strong bond between the active material, conductive carbon black, and current collector, preventing material pulverization and electrode peeling, and ensuring normal charging and discharging of the battery. Relying on excellent properties, PVDF is widely used as the main binder for lithium-ion battery cathode materials.
PVDF resin does not react with electrolytes or other substances and possesses good thermal stability.
PVDF resin exhibits excellent bonding strength, and it can create specific functional binders by introducing certain groups, to increase the toughness and processing performance, which is beneficial for improving production efficiency and battery performance.
PVDF has good solubility and is soluble in the organic solvent NMP.
| No. | ITEM | UNIT | VALUE | TEST STANDARD | ||
|---|---|---|---|---|---|---|
| A | B | C | ||||
| 1 | Appearance | White powder | ||||
| 2 | Odour | Without | ||||
| 3 | Relative Density | / | 1.75-1.79 | GB/T 1033 | ||
| 4 | Melting Point | ℃ | 156-165 | GB/T 28724 | ||
| 5 | Thermal decomposition temperature≥ | ℃ | 380 | GB/T 33047 | ||
| 6 | Water Content ≤ | % | 0.1 | GB/T 6284 | ||
| 7 | Rotational Viscosity | mpa·s | 8500-22000 | / | / | 25℃0.1g/gNMP |
| / | 1000-4000 | 2000-5000 | 25℃0.07g/gNMP | |||
It is used to produce electrode binder materials in lithium battery.
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