Agar-based films for application as polymer electrolytes
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
20/10/2012
20/10/2012
2010
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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 |
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 |