Microscopic analysis of current and mechanical properties of nafion® studied by atomic force microscopy.
Membranes (Basel)
; 2(4): 783-803, 2012 Nov 16.
Article
em En
| MEDLINE
| ID: mdl-24958429
ABSTRACT
The conductivity of fuel cell membranes as well as their mechanical properties at the nanometer scale were characterized using advanced tapping mode atomic force microscopy (AFM) techniques. AFM produces high-resolution images under continuous current flow of the conductive structure at the membrane surface and provides some insight into the bulk conducting network in Nafion membranes. The correlation of conductivity with other mechanical properties, such as adhesion force, deformation and stiffness, were simultaneously measured with the current and provided an indication of subsurface phase separations and phase distribution at the surface of the membrane. The distribution of conductive pores at the surface was identified by the formation of water droplets. A comparison of nanostructure models with high-resolution current images is discussed in detail.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Membranes (Basel)
Ano de publicação:
2012
Tipo de documento:
Article