Electrochemical dispersion technique for preparation of hybrid MO x –C supports and Pt/MO x –C electrocatalysts for low-temperature fuel cells

Kuriganova, Alexandra B.; Leontyeva, Daria V.; Ivanov, Svetlozar; Bund, Andreas; Smirnova, N. V.

doi:10.1007/s10800-016-1006-5

Cited by 36 publications

(11 citation statements)

References 63 publications

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“…Due to the particle's agglomeration, the precious determination of particle size is not straightforward and X-ray diffraction data additionally was used below. Particle size for tin dioxide-modified catalysts is close to those for Pt 40 /C [31][32][33] catalyst but larger than the size of Pt/C catalyst particles and in a good agreement with previous study for Pt 20 /SnO x 8 /C and Pt 20 /SnO x 12 /C [29].…”

Section: Introductionsupporting

confidence: 91%

“…The promising strategy aimed to mitigate carbon supports limitations is using of carbon-based hybrid supports. One of the most attractive materials is a tin oxide (SnO 2 ) owing to its availability, cost-effectiveness, and non-toxicity [7,[13][14][15][16][17][18][19][20][21][22]. The tin oxide-carbon composites are attractive due to their high oxidation resistance properties, as well as an improved electrochemical activity for the oxygen reduction reaction (ORR) as compared to Pt/C [23].…”

Section: Introductionmentioning

confidence: 99%

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On the Influence of Composition and Structure of Carbon-Supported Pt-SnO2 Hetero-Clusters onto Their Electrocatalytic Activity and Durability in PEMFC

et al. 2019

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A detailed study of the structure, morphology and electrochemical properties of Pt/C and Pt/x-SnO2/C catalysts synthesized using a polyol method has been provided. A series of catalysts supported on the SnO2-modified carbon was synthesized and studied by various methods including transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electrochemical methods, and fuel cell testing. The SnO2 content varies from 5 to 40 wt %. The TEM images, XRD and XPS analysis suggested the Pt-SnO2 hetero-clusters formation. The SnO2 content of ca. 10% ensures an optimal catalytic layer structure and morphology providing uniform distribution of Pt-SnO2 clusters over the carbon support surface. Pt/10wt %-SnO2/C catalyst demonstrates increased activity and durability toward the oxygen reduction reaction (ORR) in course of accelerated stress testing due to the high stability of SnO2 and its interaction with Pt. The polymer electrolyte membrane fuel cell current–voltage performance of the Pt/10wt %-SnO2/C is comparable with those of Pt/C, however, higher durability is expected.

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Section: Introductionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

On the Influence of Composition and Structure of Carbon-Supported Pt-SnO2 Hetero-Clusters onto Their Electrocatalytic Activity and Durability in PEMFC

et al. 2019

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“…The slope of 619 mV decade −1 for Pt/C is in good agreement with electrodes that have high mass loading (high catalyst layer thickness) [22]. It is, however, significantly higher than other values reported in literature (132-310 mV) for carbon supported Pt [43][44][45][46].…”

Section: Electrochemical Measurementssupporting

confidence: 86%

“…The Tafel slope of the EOR decreased slightly when the SnO x content increased. The same phenomenon is described by Kuriganova et al [43]. It should be noted, however, that different Tafel slopes could be obtained depending on the product distribution under specific conditions.…”

Section: Electrochemical Measurementssupporting

confidence: 80%

Pt/C and Pt/SnOx/C Catalysts for Ethanol Electrooxidation: Rotating Disk Electrode Study

et al. 2019

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Pt/C and Pt/SnOx/C catalysts were synthesized using the polyol method. Their structure, morphology and chemical composition were studied using a scanning electron microscope equipped with an energy dispersive X-ray spectrometer, transition electron microscope and X-ray photoelectron spectroscope. Electrochemical measurements were based on the results of rotating disk electrode (RDE) experiments applied to ethanol electrooxidation. The quick evaluation of catalyst activity, electrochemical behavior, and an average number of transferred electrons were made using the RDE technique. The usage of SnOx (through the carbon support modification) in a binary system together with Pt causes a significant increase of the catalyst activity in ethanol oxidation reaction and the utilization of ethanol.

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“…Most studies [21][22][23][24] are dedicated to the evaluation of the activity of tin dioxide composite catalysts in the alcohol oxidation reaction since Pt-SnO 2 hetero-clusters enhance oxidation of CO ads intermediates. Fewer studies [25][26][27] have focused on investigation of the activity in the ORR of hybrid Pt-SnO 2 catalyst with a high tin dioxide loading, co-catalyst properties of SnO 2 have been reported.…”

Section: Introductionmentioning

confidence: 99%

Carbon-Supported Pt-SnO2 Catalysts for Oxygen Reduction Reaction over a Wide Temperature Range: Rotating Disk Electrode Study

et al. 2021

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Pt/C and Pt/x-SnO2/C catalysts (where x is mass content of SnO2) were synthesized using a polyol method. Their kinetic properties towards oxygen reduction reaction were studied by a rotating disk electrode (RDE) technique in a temperature range from 1 to 50 °C. The SnO2 content of catalyst samples was 5 and 10 wt.%. A quick evaluation of the catalyst activity, electrochemical behavior and average number of transferred electrons were performed using the RDE technique. It has been shown that the use of x-SnO2 (through modification of the carbon support) in a binary system together with Pt does not reduce the catalyst activity in the temperature range of 1–30 °C. The temperature rising up to 50 °C resulted in composite catalyst activity reduction at about 30%.

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Electrochemical dispersion technique for preparation of hybrid MO x –C supports and Pt/MO x –C electrocatalysts for low-temperature fuel cells

Cited by 36 publications

References 63 publications

On the Influence of Composition and Structure of Carbon-Supported Pt-SnO2 Hetero-Clusters onto Their Electrocatalytic Activity and Durability in PEMFC

On the Influence of Composition and Structure of Carbon-Supported Pt-SnO2 Hetero-Clusters onto Their Electrocatalytic Activity and Durability in PEMFC

Pt/C and Pt/SnOx/C Catalysts for Ethanol Electrooxidation: Rotating Disk Electrode Study

Carbon-Supported Pt-SnO2 Catalysts for Oxygen Reduction Reaction over a Wide Temperature Range: Rotating Disk Electrode Study

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