Amphiphilic polymer gel electrolytes. II. Influence of the ethylene oxide side-chain length on the gel properties

Patrik Gavelin, Denis Ostrovskii, Josefina Adebahr, Patric Jannasch, Bengt Wesslén

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6 Citeringar (SciVal)

Sammanfattning

Amphiphilic polymers consisting of copolymethacrylates carrying about 26 wt % ethylene oxide [(EO)(n)] side chains of different lengths were used as matrices in gel electrolytes. The gel electrolytes were composed of 30 wt % copolymer and 70 wt % 1 M LiPF6 in a mixture of ethylene carbonate and gamma -butyrolactone (2/1 w/w). The coordination of lithium ions by the (EO)(n) side chains in competition with the solvent was studied by Raman spectroscopy. A significantly stronger lithium coordination was observed when the gel electrolyte was based on a copolymer carrying (EO)(9) units in comparison with copolymers having (EO)(1), (EO)(2), and (EO)(4) units. Despite the observed stronger lithium coordination by (EO)(9) units in the gel, the ion conductivity was not significantly lower with respect to the gels based on the other copolymers.
Originalspråkengelska
Sidor (från-till)1519-1524
TidskriftJournal of Polymer Science. Part B, Polymer Physics
Volym39
Utgåva13
DOI
StatusPublished - 2001

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)

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