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Comparison between Nafion® and a Nafion® Zirconium Phosphate Nano-composite in Fuel Cell Applications

Title data

Bauer, Felix ; Willert-Porada, Monika:
Comparison between Nafion® and a Nafion® Zirconium Phosphate Nano-composite in Fuel Cell Applications.
In: Fuel Cells. Vol. 6 (2006) Issue 3-4 . - pp. 261-269.
ISSN 1615-6854
DOI: https://doi.org/10.1002/fuce.200500217

Official URL: Volltext

Abstract in another language

A comparative investigation of the electrical, mechanical, and chemical behaviour of zirconium phosphate-Nafion composite membranes and Nafion by means of ex-situ measurements, as well as with fuel cell operation, reveals a slight reduction of ionic conductivity, a significant improvement of mechanical stability, and increased water retention for the composite materials. The overall efficiency at 130 °C is increased during direct methanol fuel cell (DMFC) operation because the reduction in the ionic conductivity is overcompensated for by the decrease in methanol crossover. With H2 as the fuel, the slight reduction in overall efficiency corresponds to the decrease in ionic conductivity. The dimensional stability of the membrane and the membrane electrode assembly (MEA) is significantly improved for operating temperatures above 100 °C. A model for the microstructure-property relation for PFSA-Zr(HPO4)2·n H2O composite membranes is presented, based on the experimental results from membranes with varying filler contents and distributions, obtained through different synthesis routes. It is aimed at the improvement of water distribution in the membrane upon fuel cell operation.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Composite Membranes; Fuel Cell Operation; Layer phosphate; Mechanical Stability; Proton conductivity
Institutions of the University: Faculties > Faculty of Engineering Science > Ehemalige Professoren > Chair Materials Processing - Univ.-Prof. Dr. Monika Willert-Porada
Profile Fields > Advanced Fields > Polymer and Colloid Science
Faculties
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Materials Processing
Profile Fields
Profile Fields > Advanced Fields
Faculties > Faculty of Engineering Science > Ehemalige Professoren
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 04 May 2015 12:53
Last Modified: 04 May 2015 12:53
URI: https://eref.uni-bayreuth.de/id/eprint/11244