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Polímeros

versão impressa ISSN 0104-1428

Resumo

AUDEH, Dalal Jaber Suliman Abdullah et al. Influence of the NiO nanoparticles on the ionic conductivity of the agar-based electrolyte. Polímeros [online]. 2014, vol.24, n.spe, pp.8-12.  Epub 18-Abr-2014. ISSN 0104-1428.  http://dx.doi.org/10.4322/polimeros.2014.055.

NiO nanoparticles with an average size of 15 nm were prepared by a simple, reproducible and low-cost controlled method, using nickel nitrate hexahydrate (Ni(NO3)2·6H2O). These nanoparticles were added to an agar-based polymer electrolyte formula, resulting, after reflux and solution casting, in a proton conducting membrane. The highest ionic conductivity values of 5.19x10-5 S cm-1 at room temperature and 3.32x10-4 S cm-1 at 80 ºC, were obtained for the sample with 50 wt. % of acetic acid and 0.25 g of NiO. Moreover, the samples showed 75 % of transparency in the visible region, a homogeneous surface and mainly amorphous structure. All the obtained results suggest that agar-based polymer electrolyte with NiO nanoparticles are promising candidates for electrochemical devices application.

Palavras-chave : Polymer electrolyte; ionic conductivity; agar; NiO nanoparticles.

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