Behavior of nafion membrane at elevated temperature and pressure

0342606 - ÚMCH 2011 RIV US eng J - Journal Article
Paidar, M. - Mališ, J. - Bouzek, K. - Žitka, Jan
Behavior of nafion membrane at elevated temperature and pressure.
Desalination and Water Treatment. Roč. 14, 1-3 (2010), s. 106-111. ISSN 1944-3994. E-ISSN 1944-3986.
[PERMEA 2009. Prague, 07.06.2009-11.06.2009]
EU Projects: European Commission(XE) 212903 - WELTEMP
Institutional research plan: CEZ:AV0Z40500505
Keywords : polymer electrolyte * perfluorosulfonic acid * membrane conductivity
Subject RIV: CD - Macromolecular Chemistry
Impact factor: 0.752, year: 2010

Nafion membrane was studied as a potential electrolyte for a polymer electrolyte membrane (PEM) reactor operating at temperatures in the range of 100-160° C. An attempt was made to avoid the well known problem of the decrease in the conductivity of Nafion at elevated temperatures caused by its insufficient humidification. Elevated pressure was applied. One environment tested was 14.7 M H3PO4 used nowadays generally for the high temperature proton conducting polymer electrolytes. 0.5 M H2SO4, demineralized water and an open atmosphere represent the remaining environments under study. The most significant deterioration of the ion exchange capacity of the membrane was observed in 0.5 M H2SO4. As anticipated, it was found that Nafion also exhibits sufficient conductivity above 100 degrees C at 100% relative humidity of the environment.
Permanent Link: http://hdl.handle.net/11104/0005878