Sigma-Aldrich Lithium difluorophosphate，≥99%痕量金属基，酸≤200 ppm，电池级

产品概述

二氟磷酸锂（LiDFP）是一种高性能锂离子电池添加剂。LiDFP是一种白色粉末，可溶于丙酮和二甲氧基乙烷，微溶于碳酸二乙酯和碳酸二甲酯与碳酸丙烯酯的1：1 v/v混合物（0.4g/100 g溶剂）。我们的LiDFP具有高纯度和低微量水分和酸杂质的设计。

二氟磷酸锂是一种有效的电解质添加剂，可提高锂离子电池的稳定性和安全性。通过促进形成坚固的固体电解质界面（SEI），它可以提高电池的寿命和性能，通过更高效、耐用和环保的储能解决方案支持更绿色的技术。点击此处了解更多信息。

应用领域

Lithium difluorophosphate is a multi-functional additive for high voltage lithium-ion batteries and is often added to lithium hexafluorophosphate (LiPF6)-based electrolytes in carbonate solvents. For example, a recent study showed that a 1 wt% addition of LiDFP to the LiPF6-carbonate electrolyte in a NMC-graphite cell significantly increased capacity retention (97%) after 200 cycles, compared to the same cells without the additive (only 77% capacity retention.)[1] LiDFP has been shown to perform well with nickel-rich cathode materials[2] because it generates a more uniform, extremely stable, and lower resistance solid-electrolyte interphase (SEI) on the cathode surface. This passivation film not only suppresses the subsequent decomposition of the electrolyte, but also prevents the dissolution of transition metal ions from NMC particles, resulting in improved cyclic stability and discharge capacity. In addition, research suggests that LiDPF additive also helps to form a stable and ionically conductive SEI passivation film on lithium metal anodes.[3] Our LiDFP, with high-purity and low moisture and acid impurities, is suitable for research on increasing the energy density and longer cycling performance in lithium-ion batteries and lithium-metal batteries.

技术规格