Conductivity vs NMR correlation times, and decoupled cation motion in polymer-in-salt electrolytes

Jiang Fan, R. F. Marzke, Charles Angell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

We report 7Li spin lattice relaxation times at 12.82 MHz over a range of temperatures for liquid electrolytes of various salt:polymer ratios, and compare the NMR correlation time obtained at the temperature of the T1 minimum with the conductivity relaxation time at the same temperature. We find that at low salt contents the two relaxation times have the same value, but beyond the `salt-in-polymer to polymer-in-salt transition' zone at the Tg maximum, the two times increasingly separate. This is taken as evidence for the onset of cation-matrix mobility decoupling, which maximizes at the pure salt extreme.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium Proceedings
Place of PublicationPittsburgh, PA, United States
PublisherPubl by Materials Research Society
Pages87-92
Number of pages6
Volume293
ISBN (Print)1558991883
StatePublished - 1993
EventProceedings of the Second Symposium on Dynamics in Small Confining Systems - Boston, MA, USA
Duration: Nov 30 1992Dec 4 1992

Other

OtherProceedings of the Second Symposium on Dynamics in Small Confining Systems
CityBoston, MA, USA
Period11/30/9212/4/92

Fingerprint

Electrolytes
Cations
Polymers
Salts
Positive ions
Nuclear magnetic resonance
Relaxation time
Spin-lattice relaxation
Temperature
Liquids

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Fan, J., Marzke, R. F., & Angell, C. (1993). Conductivity vs NMR correlation times, and decoupled cation motion in polymer-in-salt electrolytes. In Materials Research Society Symposium Proceedings (Vol. 293, pp. 87-92). Pittsburgh, PA, United States: Publ by Materials Research Society.

Conductivity vs NMR correlation times, and decoupled cation motion in polymer-in-salt electrolytes. / Fan, Jiang; Marzke, R. F.; Angell, Charles.

Materials Research Society Symposium Proceedings. Vol. 293 Pittsburgh, PA, United States : Publ by Materials Research Society, 1993. p. 87-92.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fan, J, Marzke, RF & Angell, C 1993, Conductivity vs NMR correlation times, and decoupled cation motion in polymer-in-salt electrolytes. in Materials Research Society Symposium Proceedings. vol. 293, Publ by Materials Research Society, Pittsburgh, PA, United States, pp. 87-92, Proceedings of the Second Symposium on Dynamics in Small Confining Systems, Boston, MA, USA, 11/30/92.
Fan J, Marzke RF, Angell C. Conductivity vs NMR correlation times, and decoupled cation motion in polymer-in-salt electrolytes. In Materials Research Society Symposium Proceedings. Vol. 293. Pittsburgh, PA, United States: Publ by Materials Research Society. 1993. p. 87-92
Fan, Jiang ; Marzke, R. F. ; Angell, Charles. / Conductivity vs NMR correlation times, and decoupled cation motion in polymer-in-salt electrolytes. Materials Research Society Symposium Proceedings. Vol. 293 Pittsburgh, PA, United States : Publ by Materials Research Society, 1993. pp. 87-92
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