Electrochemical Characterization of poly (styrene-b-ethylene oxide)/LiTFSI Lamellar Diblock Copolymer Electrolyte System

ORAL

Abstract

We present the electrochemical characterization studies of symmetric poly (styrene-b-ethylene oxide) copolymers (SEO) and Li[N(SO2CF3)2] (LiTFSI). The molar ratio of Li to ethylene monomers, r, was varied from 0.02 to 0.10. The ionic conductivity of these electrolytes increases with molecular weight over the entire range of temperatures and r values examined. Preliminary data suggest that the salt diffusion coefficient also increases with increasing MW of PEO block.

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Authors

  • Nitash Balsara

    • UC Berkeley, Lawrence Berkeley National Labs
    • University of California, Berkeley, CA
    • UC Berkeley

  • Ashoutosh Panday

    • UC Berkeley, Lawrence Berkeley National Labs
    • Lawrence Berkeley Lab, Berkeley,CA
    • UC Berkeley

  • Scott Mullin

    • University of California, Berkeley, CA

  • Nisita Wanakule

    • University of California, Berkeley, CA