DOI | Resolve DOI: https://doi.org/10.1039/c4ta02062f |
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Author | Search for: Wang, Yan-Jie1; Search for: Wilkinson, David P.; Search for: Neburchilov, Vladimir1; Search for: Song, Chaojie1; Search for: Guest, Alan1; Search for: Zhang, Jiujun1 |
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Affiliation | - National Research Council of Canada. Energy, Mining and Environment
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Format | Text, Article |
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Subject | Alloys; Carbon; Electrocatalysts; Electrolytic reduction; Hybrid materials; Niobium; Platinum; Proton exchange membrane fuel cells (PEMFC); Tantalum; Titanium dioxide; Carbon support; Co-doped tio; Hybrid support; Mass activity; Oxygen reduction reaction; PEM fuel cell; Physico-chemical interactions; Thermal hydrolysis; Platinum alloys |
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Abstract | To explore possible substitutes for carbon supports in PEM fuel cell catalysts, both Ta and Nb co-doped TiO2 (TaNbTiO2) and carbon-TaNbTiO2 (C-TaNbTiO2) hybrid support materials are successfully synthesized by a modified thermal hydrolysis method. These materials are employed as support candidates for Pt-Pd alloy catalysts for the oxygen reduction reaction. Among several supported catalysts, 20 wt% Pt 0.62Pd0.38/C75wt%-(Ta0.01Nb 0.03Ti0.96O2)25wt% is found to have an oxygen reduction reaction (ORR) mass activity of 260 mA mgPt -1 and an ORR loss of 30%, which are slightly better than those of the commercially available Pt/C baseline catalyst which has a mass activity of 110 mA mgPt -1 and an ORR loss of 40% probably because of a strong physicochemical interaction among the Pt-Pd alloy catalyst particle, carbon-TaNbTiO2 support and carbon, as well as the stability of oxide to protect carbon from corrosion by the distribution of oxide onto carbon, respectively. |
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Publication date | 2014-06-11 |
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In | |
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Language | English |
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Peer reviewed | Yes |
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NPARC number | 21272665 |
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Export citation | Export as RIS |
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Report a correction | Report a correction (opens in a new tab) |
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Record identifier | a728ffa3-cdb5-4610-b181-f33a783fa631 |
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Record created | 2014-12-03 |
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Record modified | 2020-04-22 |
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