Agar-based films for application as polymer electrolytes


Autoria(s): RAPHAEL, Ellen; AVELLANEDA, Cesar O.; MANZOLLI, Bruno; PAWLICKA, Agnieszka
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

20/10/2012

20/10/2012

2010

Resumo

New types of polymer electrolytes based on agar have been prepared and characterized by impedance spectroscopy, X-ray diffraction measurements, UV-vis spectroscopy and scanning electronic microscopy (SEMI). The best ionic conductivity has been obtained for the samples containing a concentration of 50 wt.% of acetic acid. As a function of the temperature the ionic conductivity exhibits an Arrhenius behavior increasing from 1.1 x 10(-4) S/cm at room temperature to 9.6 x 10(-4) S/cm at 80 degrees C. All the samples showed more than 70% of transparency in the visible region of the electromagnetic spectrum, a very homogeneous surface and a predominantly amorphous structure. All these characteristics imply that these polymer electrolytes can be applied in electrochromic devices. (C) 2009 Elsevier Ltd. All rights reserved.

Identificador

ELECTROCHIMICA ACTA, v.55, n.4, Special Issue, p.1455-1459, 2010

0013-4686

http://producao.usp.br/handle/BDPI/31688

10.1016/j.electacta.2009.06.010

http://dx.doi.org/10.1016/j.electacta.2009.06.010

Idioma(s)

eng

Publicador

PERGAMON-ELSEVIER SCIENCE LTD

Relação

Electrochimica Acta

Direitos

restrictedAccess

Copyright PERGAMON-ELSEVIER SCIENCE LTD

Palavras-Chave #Polymer electrolyte #Agar #Ionic conductivity #CONDUCTIVITY #PLASTICIZER #CHITOSAN #RELAXATIONS #PEO #GEL #Electrochemistry
Tipo

article

proceedings paper

publishedVersion