Krause, Frederick C. published the artcileScreening electrolytes designed for high voltage electrochemical capacitors, Recommanded Product: Ethyl (2,2,2-trifluoroethyl) carbonate, the publication is Electrochimica Acta (2021), 137898, database is CAplus.
Standard acetonitrile/tetraalkylammonium-tetrafluoroborate-based electrochem. capacitor electrolytes were modified with both fluorinated additives (including fluorinated analogs of ethylmethyl carbonate and di-Et carbonate, lithium difluoro(oxalato)borate, and tris(2,2,2-trifluoroethyl) phosphite) and spiro(1,1′)-bipyrrolidinium tetrafluoroborate salt, to improve stability at higher voltages (>2.7 V). Compounds investigated included (2,2,2-trifluoroethyl) Me carbonate (TFEMC), ethyl(2,2,2-trifluoroethyl) carbonate (ETFEC), bis(2,2,2-trifluoroethyl) carbonate (bTFEC), lithium difluoro(oxalato)borate (LiDFOB), and tris(2,2,2-trifluoroethyl) phosphite (TTFEPi). Screening of modified electrolytes in prototype coin cells using constant current cycling and voltage hold test protocols revealed good retention of capacitance and a reduced cell internal resistance growth when operating at maximum voltages between 3.5 and 4.0 V. These results suggest new strategies for increasing the operating limits of elec. double-layer type supercapacitors, to increase stored energy and improve their compatibility with lithium-ion battery cells for use in hybrid configurations.
Electrochimica Acta 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 C5H7F3O3, Recommanded Product: Ethyl (2,2,2-trifluoroethyl) carbonate.
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