LiPF6, with the full name of Lithium hexafluorophosphate, is mainly used as an electrolyte material for lithium-ion batteries. LiPF6 electrolyte is usually mixed with organic solvents (such as dimethyl carbonate, ethylene carbonate, etc.) to form an electrolyte solution. Lithium hexafluorophosphate is a white crystalline powder that is easily soluble in water, low-concentration methanol, ethanol, acetone, carbonates and other organic solvents. It is the most commonly used electrolyte lithium salt in lithium-ion batteries and one of the main components of lithium battery electrolytes, especially in lithium-ion batteries. LiPF6 has strong cyclical properties and its price fluctuates greatly. If necessary, please feel free to contact us at any time, we are online 7X24 hours and will reply to you as soon as possible.
| Item | Lithium Hexafluorophosphate |
|---|---|
| Density | 1.50 g/cm3 |
| Insoluble substance | ≤0.1% |
| Moisture | ≤20 ppm |
| Dissociation acid (HF) | ≤100ppm |
| Al | ≤5 ppm |
| Cu | ≤5 ppm |
| Cr | ≤5 ppm |
| Ca | ≤2 ppm |
| Fe | ≤5 ppm |
| Pb | ≤2 ppm |
| Mg | ≤5 ppm |
| Na | ≤5 ppm |
| Melting point | 200 °C |
| Molecular weight | 151.91 g/mol |
Properties of Lithium Hexafluorophosphate LiPF6
Solubility and conductivity. Lithium hexafluorophosphate has a high solubility in organic solvents, especially in carbonate solvents such as dimethyl carbonate (DMC) and diethyl carbonate (DEC). It has a low degree of association and is easy to dissociate, which makes the ionic conductivity of the electrolyte higher.
Electrochemical stability. LiPF6 has a wide electrochemical stability window, can remain stable at high voltage, and is not easy to react with electrode materials. In addition, it can form a stable solid electrolyte interface (SEI) film on the carbon negative electrode and effectively passivate the positive electrode aluminum foil to prevent its corrosion.
Thermal stability and safety. Although lithium hexafluorophosphate has poor thermal stability and is easy to decompose at high temperatures, its comprehensive performance makes it still dominate in commercial applications. However, it is sensitive to water and will decompose to produce HF gas when it comes into contact with water, which may have an adverse effect on battery performance and service life.
Environmental friendliness. Compared with other electrolytes, LiPF6 electrolyte has less environmental pollution and its decomposition products have a lower impact on the environment.
Excellent Performance of LiPF6
Main Applications of LiPF6 Electrolyte
LiPF6 powder is the most important component of the electrolyte. It is mainly used in lithium-ion power batteries, lithium-ion energy storage batteries and other daily batteries. It is also an irreplaceable lithium-ion battery electrolyte in the near and medium term. It provides strong support for the efficient and stable operation of lithium-ion batteries by improving the ionic conductivity of the electrolyte, increasing the energy density of the battery and ensuring the safety of the battery. With the continuous advancement of science and technology and the increasing maturity of battery technology, the application of lithium hexafluorophosphate LiPF6 will become more extensive, contributing to the development of electric vehicles, energy storage systems and other fields.
