Local Conductivity Effects in Polymer Electrolytes


  • We thank G. Götz for XRD, E. Schmitt for DSC, and B. Stuhlhofer for film-thickness measurements.


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Room-temperature area mapping of polymer electrolyte films at the nanoscale reveals considerable heterogeneity, with the positional ionic conductivity varying up to four orders of magnitude. Measurements indicate the presence of a bimodal conductivity distribution (see Figure), with highly conducting regions being amorphous but non-percolating at room temperature.