433-53-4 | METHYL DIFLUOROACETATE

CAS:433-53-4 | METHYL DIFLUOROACETATE,Description

Methyl difluoroacetate (MDFA) is a chemical compound with the formula C3H4F2O2. It is used in the inhibition of corrosion of aluminum cathode current collector for lithium-ion cells.

Molecular Structure Analysis

Methyl difluoroacetate has a molecular weight of 110.06 g/mol. The molecule has two conformers that are relatively close in energy.

Chemical Reactions Analysis

Methyl difluoroacetate undergoes reactions with Cl atoms. The reactions of methyl difluoroacetate have been investigated at 296 ± 2K and atmospheric pressure of synthetic air.

Physical And Chemical Properties Analysis

Methyl difluoroacetate has a density of 1.26 g/mL at 25 °C (lit.), a boiling point of 85-86 °C (lit.), and a refractive index of n20/D 1.334 (lit.).

Scientific Research Applications

1. Use in Electrolytes for Lithium Metal Anode Rechargeable Cells

Methyl difluoroacetate (MDFA) has been studied for its potential in electrolytes for lithium metal anode rechargeable cells. Research indicates that electrolytes dissolving LiPF6 in carboxylic acid esters, including MDFA, exhibit significant thermal stability and good lithium anode cycling efficiency. Specifically, the combination of LiPF6 and MDFA demonstrated the best stabilization effect, contributing to a notable shift in the exothermic peak of the electrolyte with lithium metal, which is promising for lithium metal anode secondary cells (Yamaki et al., 2001).

2. Improving Thermal Stability in Li-ion Batteries

MDFA-based LiPF6 solutions, when used as electrolytes, have shown to enhance the thermal stability of Li-ion batteries. The addition of vinylene carbonate to these electrolytes significantly improves their electrochemical characteristics, offering satisfactory reversible capacity and cycling performance, especially with graphite negative electrodes. These electrolytes demonstrate a high thermal decomposition point, contributing to the development of safer Li-ion batteries (Sato et al., 2011).

3. Atmospheric Photooxidation of Fluoroacetates

The study of the atmospheric photooxidation of fluoroacetates, including MDFA, reveals the formation of fluorocarboxylic acids. This process involves Cl-initiated photooxidation, indicating the environmental implications and the transformation of these compounds in the atmosphere. This research is crucial for understanding the environmental fate of fluoroacetates like MDFA (Blanco et al., 2010).

4. Role in the Synthesis of Organic Compounds

MDFA is involved in the synthesis of various organic compounds, notably in the formation of difluoro or monofluoroacetyl-substituted acetals. This application is significant in the field of organic chemistry, where MDFA's properties are leveraged for creating compounds with specific characteristics (Kondratov et al., 2015).

Safety And Hazards

Methyl difluoroacetate is considered hazardous. It is flammable and can cause skin irritation, serious eye irritation, and respiratory irritation.

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