Electrical behavior of proton-conducting chitosan-phosphoric acid-based electrolytes
Document Type
Article
Publication Date
1-1-2007
Abstract
Dielectric and AC conductivity studies have been carried out for chitosan-based proton-conducting electrolytes. Chitosan-phosphoric acid (CP) and chitosan composite (CPS) electrolytes were prepared using the solution cast method. In both systems, the frequency dependence of epsilon(r), M-i and tan delta is non-Debye type. The AC conductivity in both electrolytes follows the Jonscher power law. Conduction mechanism studies show that the CP sample follows the quantum mechanical tunneling (QMT) model and the CPS electrolyte follows the overlapping large polaron-tunneling (OLPT) model. (c) 2006 Elsevier BN. All rights reserved.
Keywords
Chitosan, Proton-conducting electrolyte, Conductivity, Conduction model, Non-Debye relaxation
Divisions
PHYSICS
Publication Title
Physica B: Condensed Matter
Volume
390
Issue
1-2
Publisher
Elsevier
Additional Information
Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA