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Materials character...
Materials characterization of thin film electrodes for PEFC - Survey of methods and an example
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- Lundblad, Anders (författare)
- KTH,Kemiteknik
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(creator_code:org_t)
- 2004
- 2004
- Engelska.
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Ingår i: Journal of New Materials for Electrochemical Systems. - 1480-2422. ; 7:1, s. 21-28
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- Thorough materials characterization is an essential tool for obtaining a deeper understanding of the electrochemical processes taking place in thin film electrodes of polymer fuel cells. This paper gives a survey of different methods for characterizing materials properties that are relevant to the electrochemical performance of such electrodes (i.e. loading, thickness, electrical conductivity, porosity, pore size distribution and pore morphology). The use of these materials characterization methods is exemplified, among other things it is shown that the ionomer (Nafion(R)) in a thin-film electrode made by the spraying method is homogeneously distributed in pores smaller than 40 nm. Furthermore, the ionomer penetrates and/or encapsulates the primary carbon particles of 30 nm. The results are discussed in relation to different MEA fabrication methods.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- PEMFC
- porosimetry
- electron microscopy
- SEM
- TEM
- membrane fuel-cell
- gas-diffusion electrodes
- pt loading electrodes
- catalyst layer
- performance
- carbon
- cathode
- microstructure
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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