Smart, M. C. published the artcileImproved performance of lithium-ion cells with the use of fluorinated carbonate-based electrolytes, Safety of Ethyl (2,2,2-trifluoroethyl) carbonate, the publication is Journal of Power Sources (2003), 359-367, database is CAplus.
There is increasing interest in developing Li-ion electrolytes that possess enhanced safety characteristics, while still able to provide the desired stability and performance. Toward this end, efforts were focused on the development of Li-ion electrolytes which contain partially and fully fluorinated carbonate solvents. The advantage of using such solvents is that they possess the requisite stability demonstrated by the hydrocarbon-based carbonates, while also possessing more desirable phys. properties imparted by the presence of the F substituents, such as lower m.ps., increased stability toward oxidation, and favorable SEI film forming characteristics on C. The beneficial effect of electrolytes which contain the following fluorinated carbonate-based solvents:Me-2,2,2-trifluoroethyl carbonate (MTFEC),Et-2,2,2-trifluoroethyl carbonate (ETFEC), propyl-2,2,2-trifluoroethyl carbonate (PTFEC),Me-2,2,2,2′,2′,2′-hexafluoro-CHMe2 carbonate (MHFPC),Et-2,2,2,2′,2′,2′-hexafluoroCHMe2 carbonate (EHFPC), and di-2,2,2-trifluoroethyl carbonate (DTFEC) was demonstrated. These solvents were incorporated into multi-component ternary and quaternary carbonate-based electrolytes and evaluated in Li-C and C-LiNi0.8Co0.2O2 cells, with Li reference electrodes. In addition to determining the charge/discharge behavior of these cells, Tafel polarization measurements, linear polarization measurements, and electrochem. impedance spectroscopy were used to further characterize the performance of these electrolytes, including the SEI formation characteristics and Li intercalation/de-intercalation kinetics.
Journal of Power Sources published new progress about 156783-96-9. 156783-96-9 belongs to esters-buliding-blocks, auxiliary class Trifluoromethylated Building Blocks, name is Ethyl (2,2,2-trifluoroethyl) carbonate, and the molecular formula is C9H9N3, Safety of Ethyl (2,2,2-trifluoroethyl) carbonate.
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