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NMR studies of ion mobility and association in polyether‐based polymer electrolytes
Author(s) -
Greenbaum Steven G.
Publication year - 1993
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1993.220040217
Subject(s) - materials science , polymer , relaxation (psychology) , electrolyte , nuclear magnetic resonance , glass transition , ion , nuclear magnetic resonance spectroscopy , coupling (piping) , quadrupole , nuclear quadrupole resonance , chemical physics , chemistry , organic chemistry , atomic physics , composite material , physics , psychology , social psychology , electrode
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 7 Li and 23 Na NMR, the onset of motional line‐narrowing occurs at about the glass transition temperature, illustrating the importance of polymer segmental motion to ion transport. Examples of the ability of NMR to probe cationanion 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.