Monash University

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Reason: Under embargo until Sep 2019. After this date a copy can be supplied under Section 51(2) of the Australian Copyright Act 1968 by submitting a document delivery request through your library

Impedance and dielectric spectroscopy of polymer electrolyte membranes

posted on 2017-02-20, 23:51 authored by Gooty Saleha, Wasim Feroze
This thesis deals with the investigation of the proton conductivity in the polymer electrolyte membranes (PEMs) using electrochemical impedance spectroscopy and broadband dielectric spectroscopy (BDS). A variety of parameters viz. testing method (through-plane, in-plane), electrode configuration (2-probe, 4-probe), ac amplitude, frequency range, etc. were optimized to get standard impedance spectral features for extracting the true conductivity of the membranes. BDS was used to investigate the polymer chain dynamics at high temperatures under an applied potential and the consequent effects on the proton conductivity; Nafion-117, sulfonated polysulfone, sulfonated polyetherketone and phosphoric acid-doped poly(2,5-benzimidazole) membranes were used for the above mentioned studies. Thesis submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy of the Indian Institute of Technology Bombay, India and Monash University, Australia.


Campus location


Principal supervisor

Manoj Neergat

Additional supervisor 1

Bradley Ladewig

Year of Award


Department, School or Centre

Chemical & Biological Engineering

Additional Institution or Organisation

Chemical Engineering


Doctor of Philosophy

Degree Type



Faculty of Engineering