Effect of LiPF6 concentration in Li[Ni0.4Mn0.4Co0.2]O2/graphite pouch cells operated at 4.5 V was written by Petibon, R.;Madec, L.;Abarbanel, D. W.;Dahn, J. R.. And the article was included in Journal of Power Sources in 2015.Application In Synthesis of 1,3,2-Dioxathiolane 2,2-dioxide This article mentions the following:
The effect of LiPF6 concentration in the 1 M-2.5 M range was studied in Li[Ni0.4Mn0.4Co0.2O]2 (NMC(442))/graphite and LaPO4 coated-NMC(442)/graphite pouch cells cycled to high voltage. Electrochem. impedance spectroscopy on sym. cells revealed that the dramatic impedance growth observed in NMC(442)/graphite cells cycled to high voltage comes from the interface impedance of the pos. electrode. The use of high LiPF6 concentrations in the 2-2.5 M range dramatically slowed down the impedance growth of both coated and uncoated NMC(442)/graphite cells containing certain electrolyte additive blends and cycled to high voltage. However no beneficial effect was observed in control cells containing no electrolyte additive. X-ray photoelectron spectra of cycled electrodes of coated-NMC(442)/graphite cells showed that LiPF6 concentration greatly affected the composition of the solid electrolyte interphase of both the pos. and neg. electrodes of cells containing additives. In the experiment, the researchers used many compounds, for example, 1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3Application In Synthesis of 1,3,2-Dioxathiolane 2,2-dioxide).
1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3) belongs to benzothiophene derivatives. Benzothiophene is a fused ring compound of thiophene ring and benzene ring, which is an important class of heterocycles with advantageous structures. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.Application In Synthesis of 1,3,2-Dioxathiolane 2,2-dioxide
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem