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- W2044153989 abstract "In the present study, we describe an approach to address both the catalytic activity and the durability issues synergistically for polymer electrolyte fuel cells (PEFCs) by using robust nanotube (TONT) arrays as an alternative support to replace carbon. We formed sputtered Pt on TONT arrays, which were prepared by the electrochemical anodizing procedure, and evaluated the resulting catalysts for oxygen reduction reaction (ORR) kinetics and for accelerated durability tests (ADTs). The high ORR activity of the Pt/TONT catalyst is attributed to a synergistic effect between Pt and TONT and to the increase in electrochemical active surface area. Kinetic analysis reveals that the number of electrons for the Pt/TONT catalyst is ca 3.94, which indicates a preferential four-electron transfer reaction. Moreover, the ADT result for the Pt/TONT catalyst shows a small decrease in the Pt active surface, which is attributed to the strong and stabilized physical interaction between the Pt catalyst and the TONT support. A strong metal–support interaction effect may prevent the agglomeration and dissolution of Pt catalysts on the TONT support, thereby producing a catalyst with an extended life." @default.
- W2044153989 created "2016-06-24" @default.
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- W2044153989 date "2010-01-01" @default.
- W2044153989 modified "2023-09-23" @default.
- W2044153989 title "Electrochemical Characterization and Durability of Sputtered Pt Catalysts on TiO[sub 2] Nanotube Arrays as a Cathode Material for PEFCs" @default.
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- W2044153989 doi "https://doi.org/10.1149/1.3383038" @default.
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