Platinum electrodeposition for polymer electrolyte membrane fuel cells

Thompson, Scott D., Jordan, Larry R. and Forsyth, Maria 2001, Platinum electrodeposition for polymer electrolyte membrane fuel cells, Electrochimica acta, vol. 46, no. 10-11, pp. 1657-1663.

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Title Platinum electrodeposition for polymer electrolyte membrane fuel cells
Author(s) Thompson, Scott D.
Jordan, Larry R.
Forsyth, Maria
Journal name Electrochimica acta
Volume number 46
Issue number 10-11
Start page 1657
End page 1663
Publisher Elsevier Science Pub. Co.
Place of publication New York, N.Y.
Publication date 2001-03-15
ISSN 0013-4686
1873-3859
Keyword(s) platinum utilisation
electrodeposition
PEMFC catalyst layer
nafion ion-exchange
Pt(NH3)4Cl2
Summary A novel electrodeposition technique for preparing the catalyst layer in polymer electrolyte membrane fuel cells has been designed, which may enable an increase in the level of platinum utilisation currently achieved in these systems. This method consists of a two-step procedure involving the impregnation of platinum ions into a preformed catalyst layer (via an ion-exchange into the Nafion polymer electrolyte), followed by a potentiostatic reduction. The concentration of Nafion within the catalyst layer was found to have a significant bearing on the size of the platinum deposits. The preparation of catalyst layers containing a desired platinum loading should also be possible using this method. Surface areas of the platinum deposits were determined using cyclic voltammetry. The prepared catalyst was compared with a conventional electrode made from E-TEK Pt/C. Scanning electron microscopy was used to investigate the dispersion of the platinum particles. Platinum loadings were determined quantitatively by atomic absorption spectroscopy.
Language eng
Field of Research 039999 Chemical Sciences not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2001, Elsevier Science Ltd.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30030276

Document type: Journal Article
Collection: Institute for Technology Research and Innovation
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