Accession Number : ADA260662


Title :   NMR Studies of Ion Mobility and Association in Polyether-Based Polymer Electrolytes


Descriptive Note : Technical rept. Apr 1992


Corporate Author : HUNTER COLL NEW YORK DEPT OF PHYSICS AND ASTRONOMY


Personal Author(s) : Greenbaum, Steven G


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a260662.pdf


Report Date : 25 Jan 1993


Pagination or Media Count : 23


Abstract : The results of several investigations of polyether-based polymer electrolytes by nuclear magnetic resonance (NMR) spectroscopy conducted in the author's laboratory and by other groups are reviewed. For both 7Li and 23Na NMR, the onset of motional line-narrowing occurs at about the glass transition, illustrating the importance of polymer segmental motion to ion transport. Examples of the ability of NMR to probe cation-anion interactions are discussed. These include chemical shift variations corresponding to different Li(+) environments and nuclear quadrupole coupling and relaxation behavior as a probe of Na(+) environment.


Descriptors :   *IONS , *MOBILITY , *POLYELECTROLYTES , *NUCLEAR MAGNETIC RESONANCE , *ELECTROLYTES , *POLYETHERS , *POLYMERS , CATIONS , LITHIUM , ELECTRIC CONDUCTORS , CHEMICAL SHIFTS , ANIONS , TRANSITIONS , GLASS , SPECTROSCOPY , ELECTRON TRANSPORT , SODIUM , INTERACTIONS


Subject Categories : Physical Chemistry
      Polymer Chemistry
      Electricity and Magnetism
      Atomic and Molecular Physics and Spectroscopy


Distribution Statement : APPROVED FOR PUBLIC RELEASE