6533b852fe1ef96bd12ab64d
RESEARCH PRODUCT
Segmental dynamics in polymer electrolytes
F. Lo CelsoR.e. LechnerAlessandro TrioloStefano PasseriniBernhard FrickValeria ArrighiRoberto Triolosubject
chemistry.chemical_classificationMaterials scienceEthylene oxideSpectrometerPolymer electrolytesDynamics (mechanics)Relaxation (NMR)General ChemistryPolymerNeutron scatteringCrystallographyMolecular dynamicschemistry.chemical_compoundchemistryChemical physicsGeneral Materials Sciencedescription
Polymer dynamics in poly(ethylene oxide) (PEO)–salt mixtures is investigated by means of quasi-elastic neutron scattering (QENS). In a previous study, we reported QENS data from the NEAT spectrometer (BENSC) that evidenced, for the first time, a dynamic heterogeneity in PEO–salt mixtures induced by salt addition. This finding is supported by molecular dynamics (MD) simulations carried out by Borodin et al. In agreement with MD simulations, our QENS data revealed two distinct processes: a fast motion corresponding to the bulk polymer and a slower relaxation, which we attribute to formation of PEO–cation complexes. In this paper we present new QENS data from the high-resolution spectrometer IN16 that further support MD simulations as well as our previous data interpretation.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-12-01 | Applied Physics A: Materials Science & Processing |