Ambient lithium-SO2 batteries with ionic liquids as electrolytes

Huabin Xing, Chen Liao, Qiwei Yang, Gabriel M. Veith, Bingkun Guo, Xiao Guang Sun, Qilong Ren, Yong Sheng Hu, Sheng Dai

Research output: Contribution to journalArticlepeer-review

66 Scopus citations

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 2.8V were obtained. This strategy based on reversible chemical absorption of SO 2 in IL electrolytes enables the development of the next generation of ambient Li-SO2 batteries.

Original languageEnglish
Pages (from-to)2099-2103
Number of pages5
JournalAngewandte Chemie - International Edition
Volume53
Issue number8
DOIs
StatePublished - Feb 17 2014

Funding

FundersFunder number
National Natural Science Foundation of China21222601, 20936005
U.S. Department of Energy

    Keywords

    • absorption
    • ionic liquids
    • lithium
    • primary batteries
    • sulfur dioxide

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