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Issue 15, 2013
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Highly stable ternary tin–palladium–platinum catalysts supported on hydrogenated TiO2 nanotube arrays for fuel cells

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Abstract

Herein the Pt nanocrystals were synthesized by a high-pressure methanol reduction method onto the hydrogenated TiO2 nanotube arrays pre-treated by Sn/Pd. Then Sn/Pd/Pt ternary catalysts were fabricated by hydrogen treatment. The composite catalysts with a diameter of about 18 nm were located uniformly at the inner nanotubes. The novel catalyst combined with hydrogenated TiO2 nanotube arrays exhibits excellent electro-catalytic activity and high durability. The electrochemical performance of the catalysts after 18 000 potential cycles between 0 and 1.2 V vs. RHE could reach the maximum, and the electrochemical surface area of the catalyst at 18 000 cycles is about 136 m2 g−1Pt+Pd, which is 1.3 folds than the commercial JM Pt/C (104 m2 g−1Pt). Furthermore, there is little decrease in the electrochemical surface area for the catalyst after additional 7300 potential cycles (total 24 300 cycles). In a full cell testing, the fabricated novel electrode with extra-low Pt loading (0.043 mg cm−2) generated power as 1.21 kW g−1Pt when it is used as the cathode in a fuel cell.

Graphical abstract: Highly stable ternary tin–palladium–platinum catalysts supported on hydrogenated TiO2 nanotube arrays for fuel cells

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Publication details

The article was received on 04 Mar 2013, accepted on 10 May 2013 and first published on 15 May 2013


Article type: Paper
DOI: 10.1039/C3NR01086D
Citation: Nanoscale, 2013,5, 6834-6841
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    Highly stable ternary tin–palladium–platinum catalysts supported on hydrogenated TiO2 nanotube arrays for fuel cells

    C. Zhang, H. Yu, Y. Li, L. Fu, Y. Gao, W. Song, Z. Shao and B. Yi, Nanoscale, 2013, 5, 6834
    DOI: 10.1039/C3NR01086D

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