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  • Title: Ambient lithium-SO2 batteries with ionic liquids as electrolytes.
    Author: Xing H, Liao C, Yang Q, Veith GM, Guo B, Sun XG, Ren Q, Hu YS, Dai S.
    Journal: Angew Chem Int Ed Engl; 2014 Feb 17; 53(8):2099-103. PubMed ID: 24446427.
    Abstract:
    Li-SO2 batteries have a high energy density but bear serious safety problems that are associated with pressurized SO2 and flammable solvents in the system. Herein, a novel ambient Li-SO2 battery was developed through the introduction of ionic liquid (IL) electrolytes with tailored basicities to solvate SO2 by reversible chemical absorption. By tuning the interactions of ILs with SO2, a high energy density and good discharge performance with operating voltages above 2.8 V were obtained. This strategy based on reversible chemical absorption of SO2 in IL electrolytes enables the development of the next generation of ambient Li-SO2 batteries.
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