@article{TEXTUAL,
      recid = {13438},
      author = {Sharon, Daniel and Deng, Chuting and Bennington, Peter and  Webb, Michael A. and Patel, Shrayesh N. and de Pablo, Juan  J. and Nealey, Paul F.},
      title = {Critical Percolation Threshold for Solvation-Site  Connectivity in Polymer Electrolyte Mixtures},
      journal = {Macromolecules},
      address = {2022-08-11},
      number = {TEXTUAL},
      abstract = {Poly(ethylene oxide) (PEO)-based polymer electrolytes are  often mixed with rigid, nonconductive polymers to improve  mechanical strength. The suppressed conductivity of the  mixture typically arises from a reduced segmental mobility  and a diminished connectivity between conductive PEO sites.  To decouple these two mechanisms, we compare transport in  symmetric miscible blends and disordered block copolymers  (BCP) of PEO and poly(methyl methacrylate) (PMMA). Because  the two systems have identical physicochemical properties,  differences in their conductivity directly reflect the  underlying PEO network connectivity. We find that, at short  distances (<5 Å), the Li<sup>+</sup> solvation networks are  identical for the two systems; however, a distinct  variation in the network connectivity arises at length  scales between 5 and 10 Å. Specifically, the BCP exhibits a  lower connectivity, and therefore a lower conductivity than  the blend. A quantitative model is proposed that associates  long-range Li<sup>+</sup> transport with local miscibility;  the concept of network connectivity discussed here could be  useful for designing polymer electrolyte systems.},
      url = {http://knowledge.uchicago.edu/record/13438},
}