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Synthesis and 7 Li Ion Dynamics in Polyarylene‐Ethersulfone‐Phenylene‐Oxide‐Based Polymer Electrolytes
Author(s) -
Selter Philipp,
Grote Stefanie,
Brunklaus Gunther
Publication year - 2016
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201600211
Subject(s) - arylene , phenylene , polymer chemistry , polymer , counterion , electrolyte , chemistry , oxide , ether , relaxation (psychology) , materials science , ion , organic chemistry , social psychology , psychology , alkyl , electrode , aryl
A new block‐co‐polymer based on poly(arylene ether sulfone) and nitrile‐functionalized poly(phenylene oxide) is prepared via polycondensation. Upon swelling with Li triflate dispersed in succinonitrile, a polymer electrolyte suitable for application in secondary Li ion batteries is obtained, which at temperatures above 313 K exhibits conductivities of 10 −4 –10 −3 S cm −1 . The presence of distinct coordination modes of the Li ions (not discernible from inspection of 7 Li chemical shifts) is revealed based on a dynamic contrast identified from a distribution of transverse relaxation times. Three relaxation components reflecting polymer‐bound, partially and fully solvated Li ion species are identified on the basis of Carr–Purcell–Meiboom–Gill NMR data after inverse Laplace transformation and multiexponential relaxation analysis toolkit analysis thus highlighting the versatility of the applied methods.