CO tolerance electrocatalyst of PtRu-HxMeO3/C (Me = W, Mo) made by composite support method

Hou, Zhongjun

doi:10.1016/s0378-7753(03)00515-9

Cited by 73 publications

(30 citation statements)

References 20 publications

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“…Hou et al [17] proposed that hydrogen and CO spillover occur on H x MoO 3 , which leads to the facile removal of CO by the active water bound on the H x MoO 3 in accordance with the bifunctional mechanism. Moreover the importance of hydrogen spillover from Pt to Ti 0.7 W 0.3 O 2 mixed oxides in the high activity for CO oxidation was demonstrated in Ref.…”

Section: Electrochemical Measurementmentioning

confidence: 99%

Effect of Mo incorporation on the electrocatalytic performance of Ti–Mo mixed oxide–carbon composite supported Pt electrocatalysts

Vass

Borbáth

Pászti

et al. 2017

Reac Kinet Mech Cat

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Section: Electrochemical Measurementmentioning

confidence: 99%

Effect of Mo incorporation on the electrocatalytic performance of Ti–Mo mixed oxide–carbon composite supported Pt electrocatalysts

Vass

Borbáth

Pászti

et al. 2017

Reac Kinet Mech Cat

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“…Ternary electrocatalysts based on carbon supported PtRuMo nanoparticles have attracted major attention in recent years for PEMFCs, fuelled with H 2 /CO or low molecular weight alcohols [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37]. Mo is a cheaper and more abundant transition metal than Pt and Ru.…”

Section: Introductionmentioning

confidence: 99%

“…This difficulty comes from the inability to synthesize PtRuMo nanoparticles supported on carbon of a controlled chemical composition and particle size is still complicated. The synthesis methods used can be classified in (i) one-step method or simultaneous incorporation of the three metals [31,33,[35][36][37], and (ii) two-step methods or sequential incorporation of Mo and PtRu nanoparticles [27,32]. While a variety of PtRuMo catalysts have been prepared by one-step methods, the ability to control the size and composition is limited due to the propensity of aggregation of metals at the nanoscale.…”

Section: Introductionmentioning

confidence: 99%

Carbon-Supported PtRuMo Electrocatalysts for Direct Alcohol Fuel Cells

et al. 2013

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Abstract:The review article discusses the current status and recent findings of our investigations on the synthesis and characterization of carbon-supported PtRuMo electrocatalysts for direct alcohol fuel cells. In particular, the effect of the carbon support and the composition on the structure, stability and the activity of the PtRuMo nanoparticles for the electrooxidation of CO, methanol and ethanol have been studied. Different physicochemical techniques have been employed for the analysis of the catalysts structures: X-ray analytical methods (XRD, XPS, TXRF), thermogravimetry (TGA) and transmission electron microscopy (TEM), as well as a number of electrochemical techniques like CO adsorption studies, current-time curves and cyclic voltammetry measurements. Furthermore, spectroscopic methods adapted to the electrochemical systems for in situ studies, such as Fourier transform infrared spectroscopy (FTIRS) and differential electrochemical mass spectrometry (DEMS), have been used to evaluate the oxidation process of CO, methanol and ethanol over the carbon-supported PtRuMo electrocatalysts.

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“…Platinum alloyed with molybdenum is closely behind the Pt/Ru/C catalysts in performance. Molybdenum has enhanced co-catalytic activity because it is likely to form a Mo bronze with redox, which can be attributed to rapid change in the oxidation state [16]. Figure 7 shows the comparison of in-house binary catalysts synthesized by the method described in this work to binary catalysts prepared by a similar method in a previous work.…”

Section: Performance Of Binary Metal Catalystsmentioning

confidence: 97%

“…The ability of a few of the ternary catalysts to oxidize carbon monoxide in the MEA leads to better CO tolerance in the fuel cell [16]. The quaternary metal catalysts chosen in this study were based upon the success of the Pt/Ru/Mo system, and exhibited notable CO tolerance in the MEA.…”

Section: Co Tolerance Of Quaternary Metal Catalystsmentioning

confidence: 99%

Synthesis and Characterization of CO- and H2S- Tolerant Electrocatalysts for PEM Fuel Cell

Ilias¹

2006

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The present state-of-art Proton Exchange Membrane Fuel Cell (PEMFC) technology is based on platinum (Pt) as a catalyst for both the fuel (anode) and air (cathode) electrodes. This catalyst is highly active but susceptible to poisoning by CO, which may be present in the H 2 -fuel used or may be introduced during the fuel processing. Presence of trace amount of CO in the H 2 -fuel poisons the anode irreversibly and decreases the performance of the PEMFCs. In an effort to reduce the Pt-loading and improve the PEMFC performance, we have synthesized a number of Pt-based binary, ternary, and quaternary electrocatalysts using Ru, Mo, Ir, Ni, and Co as a substitute for Pt. Co-catalytic activities were found for the elements Mo, Ru, and Ir. Both the ternary (Pt/Ru/Mo/C) and quaternary (Pt/Ru/Mo/Ir/C) metal catalysts in membrane electrode assemblies (MEA) outperformed pure Pt/C catalysts at all levels in presence of CO up to 100 ppm. Preliminary results suggest that by substituting Mo, Ru, and Ir in catalyst formulation, it is possible to reduce Pt-loading and increase CO-tolerance in PEMFC application. Comparison studies showed that the newly developed ternary and quaternary catalysts with lower Pt outperformed pure Pt catalyst in presence of CO-contaminated H 2 fuel. High performance at low Pt loading of less than 0.4 mg/cm 2 was achieved, thus exceeding the initial targets.iv

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CO tolerance electrocatalyst of PtRu-HxMeO3/C (Me = W, Mo) made by composite support method

Cited by 73 publications

References 20 publications

Effect of Mo incorporation on the electrocatalytic performance of Ti–Mo mixed oxide–carbon composite supported Pt electrocatalysts

Effect of Mo incorporation on the electrocatalytic performance of Ti–Mo mixed oxide–carbon composite supported Pt electrocatalysts

Carbon-Supported PtRuMo Electrocatalysts for Direct Alcohol Fuel Cells

Synthesis and Characterization of CO- and H2S- Tolerant Electrocatalysts for PEM Fuel Cell

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