NDLI: Dispersed platinum and tin polyaniline film electrodes for the anodes of the direct methanol fuel cell

Content Provider	Springer Nature Link
Author	Ya, Jun Shiraga, Tomohisa Kitani, Akira
Copyright Year	2007
Abstract	To develop better and cheaper electrocatalysts for the oxidation of methanol in direct methanol fuel cells, several combinations of a conductive polymer polyaniline (PANI) and dispersed metal particles such as Pt and Sn were examined. The anodic current for the methanol oxidation (i MeOH) showing the electrocatalytic activity of Pt particles was remarkably enhanced when the particles were dispersed on PANI films that should provide higher surface areas for the dispersed particles. The activity strongly depended on the morphology and the electric conductivity of the PANI films electropolymerized in five different acid solutions: H2SO4, HNO3, HClO4, HBF4, and HCl. The highest activity was achieved using the dispersed Pt particle on PANI film electropolymerized from H2SO4 polymerizing solution. In order to reduce the dispersed amount of the expensive Pt particles, other metal particles were pre-dispersed on the PANI film prepared from the H2SO4 polymerizing solution, and then Pt particles were dispersed on the film. Among the pre-dispersed metal particles attempted here (Sn, Cu, Cr, Ni, In, Co, Sb, Bi, Pb, and Mn), the highest activity was obtained with Sn particles. When the ratio of dispersed Pt to Sn particles ranges from 32:68 to 100:0, i MeOH is higher than that measured with the dispersed Pt particle on PANI films without the Sn particles. This means that the dispersed amount of the Pt particles could be reduced by utilizing dispersed Sn particles.
Starting Page	1179
Ending Page	1182
Page Count	4
File Format	PDF
ISSN	14328488
Journal	Journal of Solid State Electrochemistry
Volume Number	12
Issue Number	9
e-ISSN	14330768
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-11-27
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Methanol oxidation Direct methanol fuel cell Tin Platinum Electrocatalyst Electronic and Computer Engineering Condensed Matter Characterization and Evaluation of Materials Industrial Chemistry/Chemical Engineering Analytical Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science Electrical and Electronic Engineering Electrochemistry

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