Ordered silicon nanocones as a highly efficient platinum catalyst support for direct methanol fuel cells

Jitendra N. Tiwari; Te Ming Chen; Fu Ming Pan; Kun Lin Lin

doi:10.1016/j.jpowsour.2008.04.058

Ordered silicon nanocones as a highly efficient platinum catalyst support for direct methanol fuel cells

Jitendra N. Tiwari, Te Ming Chen, Fu Ming Pan, Kun Lin Lin

Department of Energy and Materials Engineering

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

Platinum nanoparticles were electrodeposited on ordered silicon nanocones (SNCs) and used as the catalyst for methanol electro-oxidation in direct methanol fuel cells (DMFCs). Because of uniform dispersion of Pt nanoparticles and the high surface area, the Pt-SNC electrode exhibited superior electrocatalytic properties toward the methanol electro-oxidation, with the onset potential of 0.08 V (vs. SCE). According to chronoamperometric analysis and CO stripping cyclic voltammetric (CV) study, the Pt/SNC electrode had a stable electro-oxidation activity with a very good CO tolerance. The Si surface oxide surrounding the Pt nanoparticles on the SNCs was suggested to play a key role in improving the CO tolerance via the bifunctional mechanism.

Original language	English
Pages (from-to)	510-514
Number of pages	5
Journal	Journal of Power Sources
Volume	182
Issue number	2
DOIs	https://doi.org/10.1016/j.jpowsour.2008.04.058
State	Published - 1 Aug 2008

Keywords

Mass activity
Methanol oxidation
Pt catalysts
Silicon nanocone arrays

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2008.04.058

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title = "Ordered silicon nanocones as a highly efficient platinum catalyst support for direct methanol fuel cells",

abstract = "Platinum nanoparticles were electrodeposited on ordered silicon nanocones (SNCs) and used as the catalyst for methanol electro-oxidation in direct methanol fuel cells (DMFCs). Because of uniform dispersion of Pt nanoparticles and the high surface area, the Pt-SNC electrode exhibited superior electrocatalytic properties toward the methanol electro-oxidation, with the onset potential of 0.08 V (vs. SCE). According to chronoamperometric analysis and CO stripping cyclic voltammetric (CV) study, the Pt/SNC electrode had a stable electro-oxidation activity with a very good CO tolerance. The Si surface oxide surrounding the Pt nanoparticles on the SNCs was suggested to play a key role in improving the CO tolerance via the bifunctional mechanism.",

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T1 - Ordered silicon nanocones as a highly efficient platinum catalyst support for direct methanol fuel cells

AU - Tiwari, Jitendra N.

AU - Chen, Te Ming

AU - Pan, Fu Ming

AU - Lin, Kun Lin

PY - 2008/8/1

Y1 - 2008/8/1

N2 - Platinum nanoparticles were electrodeposited on ordered silicon nanocones (SNCs) and used as the catalyst for methanol electro-oxidation in direct methanol fuel cells (DMFCs). Because of uniform dispersion of Pt nanoparticles and the high surface area, the Pt-SNC electrode exhibited superior electrocatalytic properties toward the methanol electro-oxidation, with the onset potential of 0.08 V (vs. SCE). According to chronoamperometric analysis and CO stripping cyclic voltammetric (CV) study, the Pt/SNC electrode had a stable electro-oxidation activity with a very good CO tolerance. The Si surface oxide surrounding the Pt nanoparticles on the SNCs was suggested to play a key role in improving the CO tolerance via the bifunctional mechanism.

AB - Platinum nanoparticles were electrodeposited on ordered silicon nanocones (SNCs) and used as the catalyst for methanol electro-oxidation in direct methanol fuel cells (DMFCs). Because of uniform dispersion of Pt nanoparticles and the high surface area, the Pt-SNC electrode exhibited superior electrocatalytic properties toward the methanol electro-oxidation, with the onset potential of 0.08 V (vs. SCE). According to chronoamperometric analysis and CO stripping cyclic voltammetric (CV) study, the Pt/SNC electrode had a stable electro-oxidation activity with a very good CO tolerance. The Si surface oxide surrounding the Pt nanoparticles on the SNCs was suggested to play a key role in improving the CO tolerance via the bifunctional mechanism.

KW - Mass activity

KW - Methanol oxidation

KW - Pt catalysts

KW - Silicon nanocone arrays

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DO - 10.1016/j.jpowsour.2008.04.058

M3 - Article

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SN - 0378-7753

VL - 182

SP - 510

EP - 514

JO - Journal of Power Sources

JF - Journal of Power Sources

IS - 2

ER -

Ordered silicon nanocones as a highly efficient platinum catalyst support for direct methanol fuel cells

Abstract

Keywords

UN SDGs

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