Nishanth, KG and Sridhar, P and Pitchumani, S and Shukla, AK (2013) Pt-Ru decorated self-assembled TiO2-carbon hybrid nanostructure for enhanced methanol electrooxidation. In: Bulletin of Materials Science, 36 (3). pp. 353-359.
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Abstract
Porous titanium oxide-carbon hybrid nanostructure (TiO2-C) with a specific surface area of 350 m(2)/g and an average pore-radius of 21 center dot 8 is synthesized via supramolecular self-assembly with an in situ crystallization process. Subsequently, TiO2-C supported Pt-Ru electro-catalyst (Pt-Ru/TiO2-C) is obtained and investigated as an anode catalyst for direct methanol fuel cells (DMFCs). X-ray diffraction, Raman spectroscopy and transmission electron microscopy (TEM) have been employed to evaluate the crystalline nature and the structural properties of TiO2-C. TEM images reveal uniform distribution of Pt-Ru nanoparticles (d (Pt -aEuro parts per thousand Ru) = 1 center dot 5-3 center dot 5 nm) on TiO2-C. Methanol oxidation and accelerated durability studies on Pt-Ru/TiO2-C exhibit enhanced catalytic activity and durability compared to carbon-supported Pt-Ru. DMFC employing Pt-Ru/TiO2-C as an anode catalyst delivers a peak-power density of 91 mW/cm(2) at 65 A degrees C as compared to the peak-power density of 60 mW/cm(2) obtained for the DMFC with carbon-supported Pt-Ru anode catalyst operating under similar conditions.
| Item Type: | Journal Article |
|---|---|
| Publication: | Bulletin of Materials Science |
| Publisher: | Indian Academy of Sciences |
| Additional Information: | Copyright of this article belongs to Indian Academy of Sciences. |
| Keywords: | DMFC; Anode Catalyst; Methanol Oxidation; Pt-Ru; Accelerated Durability Test |
| Department/Centre: | Division of Chemical Sciences > Solid State & Structural Chemistry Unit |
| Date Deposited: | 06 Aug 2013 11:24 |
| Last Modified: | 06 Aug 2013 11:24 |
| URI: | http://eprints.iisc.ac.in/id/eprint/46908 |
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