Diffusion in porous functional materials

Zeolite gas separation membranes, proton exchange membrane fuel cells, dye sensitized solar cells

verfasst von

J. Caro

Abstract

The function of numerous technical apparatus and processes is diffusion controlled. In three cases studies, the diffusion of molecules, ions and electrons in gas separation membranes, fuel cell membranes and dye sensitized solar cells is discussed. In novel functional materials often an overlap of transport due to a concentration and/or a potential gradient takes place. The transport parameters measured in materials evaluation such as impedance spectroscopy can reflect a physical situation which is different from that of the working device. A detailed fundamental knowledge of various factors is necessary to fully understand the nature of transport as a basis to optimise the corresponding functional materials.

Organisationseinheit(en)

Institut für Physikalische Chemie und Elektrochemie

Typ

Artikel

Journal

Microporous and Mesoporous Materials

Band

125

Seiten

79-84

Anzahl der Seiten

6

ISSN

1387-1811

Publikationsdatum

01.10.2009

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Allgemeine Chemie, Allgemeine Materialwissenschaften, Physik der kondensierten Materie, Werkstoffmechanik

Elektronische Version(en)

https://doi.org/10.1016/j.micromeso.2009.02.017 (Zugang: Geschlossen)