LiPF2O2
Li difluorophosphate
CAS: 24389-25-1
Molecular Formula: F2H2LiO2P
LiPF2O2 - Names and Identifiers
LiPF2O2 - Physico-chemical Properties
| Molecular Formula | F2H2LiO2P |
| Molar Mass | 109.92 |
| Storage Condition | Room Temprature |
LiPF2O2 - Introduction
Li difluorophosphate(LiPF6) is an inorganic compound with the chemical formula lipf6. The following is a description of the nature, use, formulation and safety information of Li difluorophosphate:
Nature:
- Li difluorophosphate is a colorless crystalline solid, soluble in water and organic solvents at room temperature.
-It has a high degree of dissociation and good thermal stability.
- Li difluorophosphate forms a six-coordinated ionic structure in solution, which is a strong acid salt.
Use:
- Li difluorophosphate is widely used as a dissolved salt for lithium-ion batteries. It acts as an electrolyte in the battery, providing ion transport and stabilizing the battery reaction.
- Li difluorophosphate is also used in rechargeable batteries, storage batteries, solar cells, energy storage equipment and other fields.
-In fluorescent dyes, polymer materials and chemical catalysts, Li difluorophosphate also has some applications.
Preparation Method:
- Li difluorophosphate is mainly prepared by chemical reaction. A common method is to react lithium fluoride and phosphorous fluoride in iron (III) chloride solution, and then extract and purify the product.
Safety Information:
- Li difluorophosphate is a corrosive substance that can cause irritation and burns when in contact with the skin and eyes. You need to avoid contact.
-When heated or exposed to high temperatures, Li difluorophosphate may decompose to produce toxic or irritating gases.
-During operation, the relevant safety procedures should be followed, and appropriate personal protective equipment, such as gloves, goggles and exhaust systems outside the laboratory, should be provided.
-When discarding Li difluorophosphate, it should be disposed of in accordance with local regulations to prevent pollution to the environment.
Nature:
- Li difluorophosphate is a colorless crystalline solid, soluble in water and organic solvents at room temperature.
-It has a high degree of dissociation and good thermal stability.
- Li difluorophosphate forms a six-coordinated ionic structure in solution, which is a strong acid salt.
Use:
- Li difluorophosphate is widely used as a dissolved salt for lithium-ion batteries. It acts as an electrolyte in the battery, providing ion transport and stabilizing the battery reaction.
- Li difluorophosphate is also used in rechargeable batteries, storage batteries, solar cells, energy storage equipment and other fields.
-In fluorescent dyes, polymer materials and chemical catalysts, Li difluorophosphate also has some applications.
Preparation Method:
- Li difluorophosphate is mainly prepared by chemical reaction. A common method is to react lithium fluoride and phosphorous fluoride in iron (III) chloride solution, and then extract and purify the product.
Safety Information:
- Li difluorophosphate is a corrosive substance that can cause irritation and burns when in contact with the skin and eyes. You need to avoid contact.
-When heated or exposed to high temperatures, Li difluorophosphate may decompose to produce toxic or irritating gases.
-During operation, the relevant safety procedures should be followed, and appropriate personal protective equipment, such as gloves, goggles and exhaust systems outside the laboratory, should be provided.
-When discarding Li difluorophosphate, it should be disposed of in accordance with local regulations to prevent pollution to the environment.
Last Update：2024-04-10 22:29:15
LiPF2O2 - Background
In recent years, due to the rapid development of smart devices such as mobile phones and tablet computers, the market share of small lithium batteries has grown rapidly. In addition, the technology of electric vehicles has become increasingly perfect, and the market demand for large lithium batteries has gradually been released. It is expected that in the next few years, lithium batteries will Maintain the growth trend. Most lithium batteries are secondary batteries. Their poor stability, poor low temperature resistance, and poor cycle characteristics are the main technical difficulties for their rapid development. Research has proved that lithium difluorophosphate as an electrolyte can effectively improve the above-mentioned lithium battery shortcomings.
Last Update：2024-04-10 22:29:15
LiPF2O2 - Preparation
in the closed non-pound steel reaction dad, P2O5, LiF and dry tetrachlorofuran are respectively added to the reaction dad at normal temperature, sealed and stirred, cooled to -40 c, replaced the atmosphere in the kettle with nitrogen, argon or helium with water content less than 1ppm for three times, after the moisture content in the kettle is less than 1ppm, the temperature is increased to 100 c, the pressure is increased to 0.8MPa, when the reaction is 5 under stirring, the reaction temperature is 100°C and the reaction pressure is 0.8MPa; The molar ratio of P0F3 to P2O5 and LiF is 1:1.2:1.7; Then the temperature of the reaction kettle is reduced to room temperature, the insoluble matter is removed by filtration after pressure relief to obtain a pale yellow transparent filtrate, the solvent is removed by distillation under reduced pressure, and the remaining solid is recrystallized with freshly dried acet, after vacuum drying at 40°C, LiPO2F2 white powder solid with moisture ≤ 10ppm, chromaticity ≤ 20, LiF%≤ 0.02%, and purity 99.7% was obtained.
Last Update：2024-04-10 22:29:15
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