Abstract

Organic–inorganic hybrid composites were successfully prepared utilizing polysiloxane ionic-liquid and polyoxometalate inorganic clusters. Imidazolium-based polysiloxane ionic-liquid (denoted as [HPIm6]-Cl) having a cationic skeleton was employed for the anion-exchange reaction to introduce polyoxotungstate ([PW12O40]3− (PW12) or [SiW12O40]4− (SiW12)). The obtained [HPIm6]-PW12 was thermally stable over 450 °C, exhibiting drastically improved thermal stability as compared with the pristine [HPIm6]-Cl. The conductivity of [HPIm6]-PW12 was 2.5× 10−6 S cm−1 at 210 °C without humidification, which will be promising as a polymer electrolyte working over 100 °C under low humidified conditions.

Organic-inorganic hybrid composites were obtained by using polysiloxane ionic-liquid and polyoxometalate. The hybridization drastically improved thermal stability of the composite, which is promising as a proton conductor working over 100 °C.
Graphical Abstract

Organic-inorganic hybrid composites were obtained by using polysiloxane ionic-liquid and polyoxometalate. The hybridization drastically improved thermal stability of the composite, which is promising as a proton conductor working over 100 °C.

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