Argonne team develops new fluorinated sulfone electrolytes for high-voltage, high-energy Li-ion batteries
Argonne team develops new fluorinated sulfone electrolytes for high-voltage, high-energy Li-ion batteries 20 March 2017 Researchers at Argonne National Laboratory have synthesized a new class of fluorinated sulfone electrolytes to enable high-voltage, high-energy Li-ion batteries. A paper on their work is published in the RSC journal Energy & Environmental Science . The Argonne researchers evaluated the physical and electrochemical properties of the new sulfone-based electrolytes in a high voltage LiNi0.5 Mn0.3 Co0.2 O2 / graphite cell cycled at 4.6 V. The fluorinated sulfones—with an α-trifluoromethyl group—exhibit enhanced oxidation stability, reduced viscosity and superior separator wettability as compared to their non-fluorinated counterparts. Lithium-ion batteries (LIBs) are ubiquitous power sources for consumer electronics due to high energy density and long cycle li...