Synthesis and electrochemical properties of porous Pt wire electrodes for methanol electro-oxidation
journal contribution
posted on 2024-11-02, 03:28 authored by Hyo-Jin Ahn, Dayang WangWe have fabricated macroporous Pt wire electrodes via electroplating by using polycarbonate membranes with the pores filled with polystyrene colloidal crystals. The macroporous structure of the resulting Pt wire electrodes is the inverse replica of the colloidal crystal templates. Scanning electron microscopy, Transmission electron microscopy, and X-ray diffraction analysis show the successful formation of macroporous Pt wire electrodes. The catalytic activity of methanol electro-oxidation on the resulting macroporous Pt-wire electrodes due to the three dimensional continuous porous structures is 21.0 mA/cm2 at 0.718 V, which is 3.8 times higher that of the dense Pt wire electrodes, 5.4 mA/cm2, obtained without use of the colloidal crystals as templates. The chronoamperometry results demonstrate that the macroporous Pt wire electrodes exhibit superior catalytic stability as compared with the dense Pt wire electrode and the commercial Pt/C catalyst. © 2011 Elsevier Masson SAS. All rights reserved.
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Journal
Solid State SciencesVolume
13Issue
8Start page
1612End page
1615Total pages
4Publisher
Elsevier BVPlace published
NetherlandsLanguage
EnglishCopyright
© 2011 Elsevier Masson SAS. All rights reserved.Former Identifier
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