36508-91-5Relevant articles and documents
A facile synthesis of non-aqueous LiPO2F2 solution as the electrolyte additive for high performance lithium ion batteries
Zhao, Weimin,Ren, Fucheng,Yan, Qizhang,Liu, Haodong,Yang, Yong
supporting information, p. 3209 - 3212 (2020/06/28)
Constructing a reliable and favorable electrode-electrolyte interface is crucial to utilize the exceptional energy storage capability in commercial lithium-ion batteries. Here, we report a facile synthesis approach for the lithium difluorophosphate (LiPO2F2) solution as an effective film-forming additive via direct adding the Li2CO3 into LiPF6 solution at 45 °C. Benefiting from the significantly reduced interface resistance (RSEI) and charge transfer impedance (Rct) of both the cathode and anode by adding the prepared LiPO2F2 solution into a baseline electrolyte, the cycling performance of the graphite||LiNi0.5Mn0.3Co0.2O2 pouch cell is remarkably improved under all-climate condition.
Champ de forces de symetrie locale des composes oxyfluores du phosphore(V)-I. Les difluorodioxophosphates (DFP) alcalins
Addou, A.,Vast, P.,Legrand, P.
, p. 785 - 790 (2007/10/02)
Alkali phosphorofluoridates (DFP) were prepared by reaction between phosphoryl difluoride oxide P2O3F4 and alkali fluorides.The caesium salt was obtained by reaction between HPO2F2 and caesium chloride.The aim was to establish a coherent description of the various vibrational modes of the PO2F2- ion, so as to use it for more complex molecules involving either of the PO2 and PF2 groups.For that purpose a local symmetric force field (LSFF) was chosen and good agreement found between calculated and observed frequencies.This investigation provided force constant values for the PO2F2- ion in RbPO2F2, and enabled us to test the transferability of the force field to the DFP whose cristallographic structures are known.