Amphiphilic solid polymer electrolytes

Patrik Gavelin, Ronnie Ljungbäck, Patric Jannasch, Bengt Wesslén

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Sammanfattning

Amphiphilic graft copolymers consisting of methacrylate backbones carrying approximately 48 wt.% of ethylene oxide [(EO)(9) or (EO)(23)] side chains as ionophilic groups and fluorocarbon or hydrocarbon side chains as ionophobic groups were prepared. Solid polymer electrolytes based on the copolymers and lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) were characterized by DSC and the impedance spectroscopy. A maximum ion conductivity of 8 x 10(-5) S cm(-1) at 60 degreesC was found for a polymer electrolyte based on a copolymer having hydrocarbon side chains and (EO)(23) side chains, despite an EO content of only 50 wt.%. No (EO)(n) side chain crystallinity in the electrolytes was detected by calorimetry. The hydrocarbon side chains, on the other hand, were found to form a crystalline phase in the electrolytes. The melting of this phase was not reflected in the shape of the Arrhenius conductivity plot. This indicated that the segmental mobility in the ion conducting phase did not decrease as a result of the presence of the crystalline hydrocarbon phase.
Originalspråkengelska
Titel på värdpublikationSolid State Ionics
FörlagElsevier
Sidor325-332
Volym147
DOI
StatusPublished - 2002
EvenemangPolymer Electrolytes Symposium 2001 (PES2001) - Noorderwijkerhout, Nederländerna
Varaktighet: 2001 maj 142001 maj 16

Publikationsserier

Namn
Nummer3-4
Volym147
ISSN (tryckt)0167-2738
ISSN (elektroniskt)1872-7689

Konferens

KonferensPolymer Electrolytes Symposium 2001 (PES2001)
Land/TerritoriumNederländerna
OrtNoorderwijkerhout
Period2001/05/142001/05/16

Bibliografisk information

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Polymer and Materials Chemistry (LTH) (011001041)

Ämnesklassifikation (UKÄ)

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