Oxygen reduction reaction increased tolerance and fuel cell performance of Pt and RuxSey onto oxide–carbon composites

Timperman, Laure; Gago, Aldo; Alonso-Vante, Nicolás

doi:10.1016/j.jpowsour.2010.11.083

Cited by 34 publications

(21 citation statements)

References 72 publications

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“…Timperman and Alonso-Vante prepared Pt/TiO 2 /C catalysts by sol-gel method, which showed 2 times higher Pt mass activity for ORR than commercial Pt/C catalyst [33]. According to previous studies, same research group explained the synergistic effect between Pt and TiO 2 using two models: bifunctional mechanism and electronic effect [34]. Selvaganesh Nafion membrane against peroxide radicals originating from hydrogen peroxide generated during incomplete reduction of O 2 [35].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical oxygen reduction behaviour of platinum nanoparticles supported on multi-walled carbon nanotube/titanium dioxide composites

Jukk

Kongi

Tarre

et al. 2014

Journal of Electroanalytical Chemistry

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Section: Introductionmentioning

confidence: 99%

Electrochemical oxygen reduction behaviour of platinum nanoparticles supported on multi-walled carbon nanotube/titanium dioxide composites

Jukk

Kongi

Tarre

et al. 2014

Journal of Electroanalytical Chemistry

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“…can be calculated from the following relations ( ) [12] ( ) [13] ( ) [14] Table III shows the calculated indifference intervals in different frequency domains. As mentioned before, the element of the equivalent circuit with the highest-t-value was selected for the estimation of the indifference intervals.…”

Section: Resultsmentioning

confidence: 99%

“…They also reported that the high frequency resistance, which is obtained from the intersection of the Nyquist plot with the real axis in the high frequency domain, does not change in the acidic and alkaline media. Measuring the impedance of a methanol-based LFFC in the frequency range of 100 KHz to 0.1 Hz with the perturbation amplitude of 5 mV rms , Timperman et al (12) investigated the effects of adding Pt and Ru x Se y on the rate of oxygen reduction reaction. They found out that Ru x Se y additives can increase the ohmic loss and affect the polarization curve.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Analysis of Impedance Characteristics of a Laminar Flow-Based Fuel Cell

2014

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The sensitivity of the impedance characteristics of a laminar flowbased fuel cell (LFFC) to the changes of the voltage, current and fuel concentration is analyzed using the electrochemical impedance spectroscopy (EIS) method. The impedance of the cell measured at different fuel concentrations and voltages is modeled using equivalent circuits. A t-test is performed on the values of the elements of the equivalent circuits estimated in successive voltages and fuel concentrations. As a result, intervals for the voltage, current and fuel concentration are identified in which the changes in the impedance characteristics of the cell cannot be distinguished statistically. These intervals, referred to as indifference intervals, show that the impedance characteristics of the cell is most sensitive to the changes in the voltage and current in the moderate frequency domains and least sensitive to the changes in the fuel concentration in the low frequency domains.

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“…Furthermore, by using ultraviolet (UV) radiation, it is possible to deposit metallic nanoparticles on TiO 2 -C support [120,131,151] . This method is widely known as photodeposition.…”

Section: Ceramicsmentioning

confidence: 99%

“…In a recent work we have named it membraneless micro fuel cell, because the major characteristics include lack of a polymer membrane and microfabricated components. The lack of a polymer membrane allows the LFFC to use a large variety of fuels [256] including hydrogen [247,253] , methanol [246,248,251,255] , ethanol [260] , formic acid [131,264,265] , sodium borohydride, hydrazine [250,260] and glucose [270] . Table 4 lists various examples of LFFCs with different fuels, electrolytes (acid or basic medium) and the generated power densities.…”

Section: Laminar Fl Ow Fuel Cells 53mentioning

confidence: 99%

Tailoring nanostructured catalysts for electrochemical energy conversion systems

Gago¹,

Habrioux

Alonso-Vante

2012

Nanotechnology Reviews

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This review covers topics related to the synthesis of nanoparticles, the anodic and cathodic electrochemical reactions and low temperature electrochemical energy devices. The thermodynamic aspects of nucleation and growth of nanoparticles are discussed. Different methods of chemical synthesis such as w/o microemulsion, B ö nnemann, polyol and carbonyl are presented. How the electrochemical reactions take place on the surface of the catalytic nanoparticles and the importance of the substrate is put in evidence. The use of nanomaterials in low temperature energy devices such as H 2 /O 2 polymer electrolyte or proton exchange membrane fuel cell (PEMFC) and micro-direct methanol fuel cell ( μ DMFC), as well as recent progress and durability, is discussed. Special attention is given to the novel laminar fl ow fuel cell (LFFC). This review starts with the genesis of catalytic nanoparticles, continues with the surface electrochemical reactions that occur on them, and fi nally it discusses their application in electrochemical energy devices such as low temperature fuel cells or Li-air batteries.

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Oxygen reduction reaction increased tolerance and fuel cell performance of Pt and RuxSey onto oxide–carbon composites

Cited by 34 publications

References 72 publications

Electrochemical oxygen reduction behaviour of platinum nanoparticles supported on multi-walled carbon nanotube/titanium dioxide composites

Electrochemical oxygen reduction behaviour of platinum nanoparticles supported on multi-walled carbon nanotube/titanium dioxide composites

Sensitivity Analysis of Impedance Characteristics of a Laminar Flow-Based Fuel Cell

Tailoring nanostructured catalysts for electrochemical energy conversion systems

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