Lithium Difluoro (oxalato) Borate CAS 409071-16-5

Product Description

• Product Introduction: It has a molecular formula of C₂BF₂O₄·Li and a molecular weight of 143.77. It appears as a white crystalline powder. It has a melting point of 265 - 271℃, a density of 2.01 - 2.12g/cm³ (20℃), and is highly hygroscopic. It shows good solubility in organic solvents such as carbonate esters, ethers, and γ - butyrolactone.
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• Core Advantages: As a key film - forming agent, it can form a dense and stable solid - electrolyte interphase (SEI) film on the electrode surface, and also construct a boron - containing cathode electrolyte interphase (CEI) film on the positive electrode, which can significantly improve the cycle stability and high - temperature performance of the battery, and has a wide - temperature - range adaptability. It can be used as an alternative to the traditional lithium hexafluorophosphate (LiPF₆) conductive salt, with high ionic conductivity in the wide - temperature range of - 40℃ to 60℃, better thermal stability and hydrolysis resistance, and can avoid the generation of highly toxic HF.
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• Main Applications: It is mainly used in the field of lithium - ion batteries, especially in power batteries such as ternary high - nickel batteries. Adding 5% - 10% can increase the high - temperature cycle capacity retention rate from 70% to 85%, and it also supports stable discharge in extremely cold environments of - 40℃. It is also being explored and applied in energy - storage batteries, solid - state battery liquid electrolytes, sodium - ion batteries, and lithium - metal batteries with ether - based electrolytes.