Polímeros: Ciência e Tecnologia
https://revistapolimeros.org.br/article/doi/10.4322/polimeros.2014.055
Polímeros: Ciência e Tecnologia
Scientific & Technical Article

Influence of the NiO nanoparticles on the ionic conductivity of the agar-based electrolyte

Audeh, Dalal Jaber S. A.; Alcázar, José Bernedo; Barbosa, Carlos Veiga; Carreño, Neftalí L. V.; Avellaneda, César Antonio O.; Pawlicka, Agnieszka; Raphael, Ellen

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Abstract

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 5.19 ×10-5 S cm-1 at room temperature and 2.83 × 10-4 S cm-1 at 70 °C, 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.

Keywords

Polymer electrolyte, Ionic conductivity, Agar, NiO nanoparticles

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