Evaluation of TiO2 as catalyst support in Pt-TiO2/C composite cathodes for the proton exchange membrane fuel cell

Kraemer, Sophie von; Wikander, Kjell; Lindbergh, Göran; Lundblad, Anders; Palmqvist, Anders

doi:10.1016/j.jpowsour.2008.02.023

Cited by 128 publications

(74 citation statements)

References 18 publications

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“…Therefore, the presence of TiO 2 improved the durability significantly. It is likely that the double layer charge is higher without TiO 2 [19], which implies that the relative surface area loss for the unmodified sample may be more pronounced (compared to the case with TiO 2 ) than the decrease indicated by the electrochemical tests. The improved stability observed for Pt/TiO 2 -C can be explained by assuming that the TiO 2 component acts as an inhibitor of the catalyst degradation process, which is mostly due to catalyst detachment from the support as a result of carbon corrosion.…”

Section: Electrochemical Stability Assessmentmentioning

confidence: 99%

“…TiO 2 and carbon can be combined to form nano-composite catalyst supports [19][20][21][22]. Von Kraemer et al showed that such a modified support performed comparably to Pt/C in a PEM fuel cell [19].…”

Section: Introductionmentioning

confidence: 99%

“…Von Kraemer et al showed that such a modified support performed comparably to Pt/C in a PEM fuel cell [19]. Tian et al demonstrated an improvement in durability for Pt-TiO x /C relative to Pt/C for PEM fuel cell operation without humidification, which was explained in part by the ability of TiO 2 to retain water [22].…”

Section: Introductionmentioning

confidence: 99%

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Improved stability of mesoporous carbon fuel cell catalyst support through incorporation of TiO2

Bauer

Song

Ignaszak

et al. 2010

Electrochimica Acta

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The electrochemical stability of Pt deposited on mesoporous carbon, which was either applied in its unmodified state or coated with 20 wt% TiO 2 , was investigated by cyclic voltammetry in N 2 purged 0.5 M sulfuric acid. XRD analysis revealed that TiO 2 was present in the anatase phase. The mean Pt particle diameter was ∼6 and ∼4 nm for mesoporous carbon with and without TiO 2 , respectively. Pt supported on TiO 2 modified substrates was more stable than Pt supported on conventional mesoporous carbon when subjected to 1000 cycles in the potential range from 0.05 to 1.25 V vs. RHE. This was evident from the observation that the support with TiO 2 retained ∼53% of the electrochemically active surface area relative to the state observed after 100 cycles, whereas ∼33% of the active area remained in the case without TiO 2 . The oxygen reduction mass activity was identical for both fresh samples (i.e., 18 A g −1 Pt). After 1000 cycles the mass activity decreased to 10 A g −1 Pt for the case without TiO 2 , whereas with TiO 2 the deactivation was minor; i.e., the mass activity after 1000 cycles was 17 A g .

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Section: Electrochemical Stability Assessmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Improved stability of mesoporous carbon fuel cell catalyst support through incorporation of TiO2

Bauer

Song

Ignaszak

et al. 2010

Electrochimica Acta

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“…Platinised TiO 2 pigments are the objects of much interest as alternative cathodes in PEMFC applications for the electroreduction of gaseous oxygen [2,[31][32][33][34][35]. In order to Photoplatinization duration (min) Figure 5.…”

Section: Functionalities Of Aip-derived Platinum Nanoparticlesmentioning

confidence: 99%

“…platinum nanoparticles, distributed at the surface of TiO 2 photocatalysts can enhance the photocatalytic activity [15,[22][23][24][25][26][27][28][29], organic residues can alter or cancel this activity [2,30]. While metal platinum nanoparticles are the objects of tremendous interest for electrode applications in proton exchange membrane fuel cells (PEMFC) [2,[31][32][33][34][35], the oxidation of organic residues present at the surface of these nanoparticles, yielding the formation of adsorbed carbon monoxide, can dramatically reduce the efficiency of such electrodes [2,30]. Finally, and from a general point of view, it is obvious that any technical simplification or cost reduction arising from the development of simplified AIP formulations can present practical interests for industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and functionalities of noble metal nanoparticles formed through simple all-inorganic photochemical procedures

Riassetto¹,

Roussel²,

Rapenne³

et al. 2010

Journal of Experimental Nanoscience

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The photochemical reduction of metal precursors under UV light has been studied to produce noble metal nanoparticles. Depending on the metal (Pt, Au or Ag) and precursor (chlorinated or nitrate) natures, different 1-step or 2-step photolytic or photocatalytic reduction mechanisms have been investigated. These mechanisms yield simple all-inorganic methods to generate metal nanoparticles in liquid medium and disperse these particles at the surface of various kinds of supports. Depending on the metal particle and support natures, different functionalities can arise from such easy and low-cost photometallisation methods.

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Composite Carbon Nanotube Microsphere Coatings for Use as Electrode Supports

Fraser

Zhang

Merle

et al. 2018

Adv Funct Materials

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Carbon nanotubes and titania, highly corrosion-resistant materials, are successfully assembled into high surface area microparticles (162 m 2 g −1 ) in one step using low-power ultrasound. The composite microparticles are electrically conductive (>0.4 S cm −1 ). The microparticles are deposited as an electrical layer (<2.5 µm) on a stainless-steel mesh gas diffusion layer using a tribochemical coating technique. Long-term durability testing in 0.5 m H 2 SO 4 at 80 °C confirms the corrosion resistance of the catalyst coating. This coating method may have wider applicability for other electrical and electrochemical devices that require thin corrosion-resistant coatings.

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Evaluation of TiO2 as catalyst support in Pt-TiO2/C composite cathodes for the proton exchange membrane fuel cell

Cited by 128 publications

References 18 publications

Improved stability of mesoporous carbon fuel cell catalyst support through incorporation of TiO2

Improved stability of mesoporous carbon fuel cell catalyst support through incorporation of TiO2

Synthesis and functionalities of noble metal nanoparticles formed through simple all-inorganic photochemical procedures

Composite Carbon Nanotube Microsphere Coatings for Use as Electrode Supports

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