6533b830fe1ef96bd1296e76
RESEARCH PRODUCT
Correlations between Ion Conductivity and Polymer Dynamics in Hyperbranched Poly(ethylene oxide) Electrolytes for Lithium-Ion Batteries
Sung-il LeeHolger FreyHuagen PengMartina SchömerChristopher L. SolesDaniel WilmsDo Y. YoonKirt A. Pagesubject
chemistry.chemical_classificationMaterials scienceEthylene oxideGeneral Chemical Engineeringtechnology industry and agricultureOxidechemistry.chemical_elementmacromolecular substancesGeneral ChemistryPolymerElectrolyteConductivitylaw.inventionIonchemistry.chemical_compoundchemistryChemical engineeringlawPolymer chemistryMaterials ChemistryLithiumCrystallizationdescription
Poly(ethylene oxide)s with varying degrees of hyperbranching are effective at preventing the crystallization of PEO and lead to approximately a 100-fold increase in the Li-ion conductivity below 50 °C as compared with linear PEO. The Li-ion conductivities, which increase further upon permethylation of the hydroxyl termini, are found to correlate quantitatively with the fast segmental dynamics of PEO as measured by inelastic neutron scattering.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-05-17 | Chemistry of Materials |