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

• Autor(a) principal: Audeh,Dalal Jaber Suliman Abdullah
• Data de Publicação: 2014
• Outros Autores: Alcázar,José Bernedo, Barbosa,Carlos Veiga, Carreño,Neftalí Lenin Villarreal, Avellaneda,César Antonio Oropesa, Pawlicka,Agnieszka, Raphael,Ellen
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Polímeros (São Carlos. Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282014000700003
• topic: Polymer electrolyte; ionic conductivity; agar; NiO nanoparticles

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.