- Sulfur phosphate compound, non-aqueous lithium ion battery electrolyte containing sulfur phosphate compound and lithium ion battery
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The invention discloses a thiophosphate compound, a synthesis method and a non-aqueous electrolyte. After the compound is applied to a battery with the non-aqueous electrolyte, even if the battery isunder high voltage, an electrode/electrolyte interface of a lithium ion battery is effectively improved, so that an electrode surface film is stabilized, side reactions are reduced, the stability of the battery under high temperature and high voltage is improved, and the cycling stability of the battery is improved, and meanwhile, the self-extinguishing time of the non-aqueous electrolyte after combustion is shortened, the flame retardance is improved, and the safety performance of the battery is improved.
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Paragraph 0048-0050
(2020/12/14)
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- Reaction of Three-coordinate Phosphorus Compounds with Organophosphorus Pseudohalogens. 3. Phosphonium and Phosphorane Intermediates in the Desulfurization and Dehalogenation of Bis(phosphinoyl) Disulfides. Influence of Lewis Acids on the Reaction Chemoselectivity
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The reactions of bis(phosphinoyl) disulfides RR1P(O)S-S-P(O)RR1 1 with PIII compounds have been investigated and various mechanistic features have been elucidated by variable-temperature 31P NMR spectroscopy.These studies show that in most cases phosphonium intermediates 5 and 6 are involved.In cases were ligands on PIII increase the stability of the five coordinate structures phosphorane intermediates are observed.In the isomerization 5 -> 6, the mode of decomposition (desulfurization, deoxygenation or dealkylation) to give stable end products is influenced by electronic and steric factors.The presence of the Lewis acid BF3 influences considerably the stability of the transient species 5 and 6 and the chemoselectivity of the reaction.
- Krawczyk, Ewa,Skowronska, Aleksandra,Michalski, Jan
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