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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 Wang
We 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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    ISSN - Is published in 12932558

Journal

Solid State Sciences

Volume

13

Issue

8

Start page

1612

End page

1615

Total pages

4

Publisher

Elsevier BV

Place published

Netherlands

Language

English

Copyright

© 2011 Elsevier Masson SAS. All rights reserved.

Former Identifier

2006071521

Esploro creation date

2020-06-22

Fedora creation date

2017-03-15

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