Molecular mobility and Li(+) conduction in polyester copolymer ionomers based on poly(ethylene oxide).

@article{Fragiadakis2009MolecularMA,
  title={Molecular mobility and Li(+) conduction in polyester copolymer ionomers based on poly(ethylene oxide).},
  author={Daniel Fragiadakis and Shichen Dou and Ralph H Colby and James Runt},
  journal={The Journal of chemical physics},
  year={2009},
  volume={130 6},
  pages={064907}
}
We investigate the segmental and local dynamics as well as the transport of Li(+) cations in a series of model poly(ethylene oxide)-based single-ion conductors with varying ion content, using dielectric relaxation spectroscopy. We observe a slowing down of segmental dynamics and an increase in glass transition temperature above a critical ion content, as well as the appearance of an additional relaxation process associated with rotation of ion pairs. Conductivity is strongly coupled to… CONTINUE READING

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