Amanchukwu, Chibueze V. published the artcileA New Class of Ionically Conducting Fluorinated Ether Electrolytes with High Electrochemical Stability, Product Details of C6H6F8O4, the publication is Journal of the American Chemical Society (2020), 142(16), 7393-7403, database is CAplus and MEDLINE.
Increasing battery energy d. is greatly desired for applications such as portable electronics and transportation. However, many next-generation batteries are limited by electrolyte selection because high ionic conductivity and poor electrochem. stability are typically observed in most electrolytes. For example, ether-based electrolytes have high ionic conductivity but are oxidatively unstable above 4 V, which prevents the use of high-voltage cathodes that promise higher energy densities. In contrast, hydrofluoroethers (HFEs) have high oxidative stability but do not dissolve lithium salt. In this work, we synthesize a new class of fluorinated ether electrolytes that combine the oxidative stability of HFEs with the ionic conductivity of ethers in a single compound We show that conductivities of up to 2.7 x 10-4 S/cm (at 30°C) can be obtained with oxidative stability up to 5.6 V. The compounds also show higher lithium transference numbers compared to typical ethers. Furthermore, we use NMR (NMR) and mol. dynamics (MD) to study their ionic transport behavior and ion solvation environment, resp. Finally, we demonstrate that this new class of electrolytes can be used with a Ni-rich layered cathode (NMC 811) to obtain over 100 cycles at a C/5 rate. The design of new mols. with high ionic conductivity and high electrochem. stability is a novel approach for the rational design of next-generation batteries.
Journal of the American Chemical Society published new progress about 129301-42-4. 129301-42-4 belongs to alcohols-buliding-blocks, auxiliary class Fluoride,Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2,2′-((Perfluoroethane-1,2-diyl)bis(oxy))bis(2,2-difluoroethanol), and the molecular formula is C6H6F8O4, Product Details of C6H6F8O4.
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