2012
DOI: 10.1016/j.jpowsour.2012.07.080
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Nb-doped TiO2/carbon composite supports synthesized by ultrasonic spray pyrolysis for proton exchange membrane (PEM) fuel cell catalysts

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Cited by 23 publications
(9 citation statements)
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“…Their major cost can be attributed to the utilization of an expensive Pt metal as the catalyst in the electrode layer [2]. Thus, many researchers have been developed the new types of fuel cell catalysts such as non-Pt catalysts [1,[3][4][5][6][7][8], Pt-based catalysts [9][10][11][12] and nonprecious metal composite electrocatalysts [13][14][15] as a means to reduce fuel cell cost. Among these, the most promising catalysts are the nanostructured Pt-alloy catalysts because they can enhance activity levels to a high degree when compared with pure Pt catalysts [16].…”
Section: Introductionmentioning
confidence: 99%
“…Their major cost can be attributed to the utilization of an expensive Pt metal as the catalyst in the electrode layer [2]. Thus, many researchers have been developed the new types of fuel cell catalysts such as non-Pt catalysts [1,[3][4][5][6][7][8], Pt-based catalysts [9][10][11][12] and nonprecious metal composite electrocatalysts [13][14][15] as a means to reduce fuel cell cost. Among these, the most promising catalysts are the nanostructured Pt-alloy catalysts because they can enhance activity levels to a high degree when compared with pure Pt catalysts [16].…”
Section: Introductionmentioning
confidence: 99%
“…In order to increase the electrocatalytic activity of fuel cell catalyst composite materials titania-supported bi-or trimetallic alloys have been proposed [37,38]. Another approach in catalyst template design is to dope TiO 2 with an n-type dopant, such as niobium [39][40][41][42][43][44][45][46]. TiO 2 doped with Pd and Nb was investigated as a support for Pt-Pd alloy catalyst and showed higher Pt mass activity (>130 mA mg À1 at 0.9 V vs. RHE) than that of the commercial 47 wt.% Pt/C catalyst (110 mA mg À1 ), however, the durability of these materials was low [47].…”
Section: Introductionmentioning
confidence: 99%
“…Another solution is doping or adding some conductive oxides in titanium oxide. For example, Nb-doped TiO 2 has demonstrated high electrical conductivity similar to carbon materials [113][114][115][116][117]. As an extension of doping strategy, the combination of nonconductive oxide (SiO 2 [118,119] and TiO 2 [27]) with conductive oxides such as RuO 2 produces metal oxide composites with high conductivity and stability.…”
Section: Non-carbon Supportsmentioning
confidence: 99%