Nanoparticles of Pt/HxMoO3 electrodeposited in poly (3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid) as the electrocatalyst for methanol oxidation
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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| Title |
Nanoparticles of Pt/HxMoO3 electrodeposited in poly
(3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid)
as the electrocatalyst for methanol oxidation
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| Creator |
Kuo, C.W.
Sivakumar, C. Wen, T.C. |
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| Subject |
Electroorganic
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| Description |
Nanoparticles of platinum and hydrous molybdenum oxide (Pt/HxMoO3) were successfully electrodeposited
onto poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid) (PEDOT-PSS) film by
chronocoulometry (0.2 C). Various loadings of Pt/HxMoO3 particles onto the PEDOT-PSS electrode were
achieved using the co-deposition technique. The existence of Pt/HxMoO3 particles was determined
through characterization by X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) analysis.
XPS results revealed that deposited Pt and molybdenum were metallic Pt and HxMoO3, respectively.
XRD analysis showed a decrease of Pt crystalline facets for the incorporation of HxMoO3 into PEDOT-PSSPt,
indicating a strong interaction between Pt and HxMoO3. Scanning electron microscopy (SEM) results
revealed a uniform dispersion of Pt/HxMoO3 particles, with the particle size of 70–90 nm, in the PEDOTPSS
matrix. The cyclic voltammetry study and chronopotentiometry measurements demonstrated that the
PEDOT-PSS-Pt/HxMoO3 electrode had superior electrocatalytic activity of methanol oxidation with less
CO poisoning. The presence of amorphous HxMoO3 particles on the Pt surface minimized CO poisoning of
methanol oxidation.
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| Publisher |
Elsevier B.V.
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| Date |
2008
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/381/1/114-2008.pdf
Kuo, C.W. and Sivakumar, C. and Wen, T.C. (2008) Nanoparticles of Pt/HxMoO3 electrodeposited in poly (3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid) as the electrocatalyst for methanol oxidation. Journal of Power Sources, 185 (2). pp. 807-814. ISSN 0378-7753 |
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| Relation |
http://cecri.csircentral.net/381/
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