The use of fluorocarbon surfactants to improve the manufacture of PEM fuel cell electrodes
The use of fluorocarbon surfactants to improve the manufacture of PEM fuel cell electrodes
Fluorocarbon surfactants are used to improve surface wetting during the screen printing of carbon black inks onto PEM fuel cell electrodes. The fluorosurfactants were tested in inks that comprised a Nafion® ionomer solution with platinum-loaded carbon black. Four commercially available fluorosurfactants (Zonyl FSO, Zonyl 1033D, Forafac 1098 and Novec FC 4430) were screened and assessed for electrochemical activity (via cyclic voltammetry), leaching and the ability to form ink layers. Good wetting characteristics were observed and the inks showed a similar specific electrochemical active area (200-430 cm2 mg-1 Pt) to a standard reference ink (370 cm2 mg-1 Pt), indicating that the surfactants did not adversely adsorb on the platinum catalyst surface or block the adsorption/desorption of hydrogen. Additionally, the fluorosurfactants in the cured inks were shown to be electrochemically inactive in the potential region relevant to fuel cell operation.
carbon inks, electrocatalysts, fluorocarbon surfactants, hydrogen adsorption, nafion® oonomer, pem fuel cell
148-156
Wills, R.G.A.
60b7c98f-eced-4b11-aad9-fd2484e26c2c
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
Watt-Smith, Matthew J.
c8c5b4b3-47d6-407a-9858-869c6663349d
19 February 2009
Wills, R.G.A.
60b7c98f-eced-4b11-aad9-fd2484e26c2c
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
Watt-Smith, Matthew J.
c8c5b4b3-47d6-407a-9858-869c6663349d
Wills, R.G.A., Walsh, F.C. and Watt-Smith, Matthew J.
(2009)
The use of fluorocarbon surfactants to improve the manufacture of PEM fuel cell electrodes.
Fuel Cells, 9 (2), .
(doi:10.1002/fuce.200800113).
Abstract
Fluorocarbon surfactants are used to improve surface wetting during the screen printing of carbon black inks onto PEM fuel cell electrodes. The fluorosurfactants were tested in inks that comprised a Nafion® ionomer solution with platinum-loaded carbon black. Four commercially available fluorosurfactants (Zonyl FSO, Zonyl 1033D, Forafac 1098 and Novec FC 4430) were screened and assessed for electrochemical activity (via cyclic voltammetry), leaching and the ability to form ink layers. Good wetting characteristics were observed and the inks showed a similar specific electrochemical active area (200-430 cm2 mg-1 Pt) to a standard reference ink (370 cm2 mg-1 Pt), indicating that the surfactants did not adversely adsorb on the platinum catalyst surface or block the adsorption/desorption of hydrogen. Additionally, the fluorosurfactants in the cured inks were shown to be electrochemically inactive in the potential region relevant to fuel cell operation.
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Published date: 19 February 2009
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Original research paper
Keywords:
carbon inks, electrocatalysts, fluorocarbon surfactants, hydrogen adsorption, nafion® oonomer, pem fuel cell
Organisations:
Engineering Sciences
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Local EPrints ID: 148611
URI: http://eprints.soton.ac.uk/id/eprint/148611
PURE UUID: abf7f7f5-1fd6-4a53-a5c0-2d91468d809a
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Date deposited: 28 Apr 2010 13:32
Last modified: 14 Mar 2024 02:48
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Author:
Matthew J. Watt-Smith
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