Anodic Electrocatalysts for Fuel Cells Based on Pt/Ti1–xRu
                x
              O2

Бельмесов, А. А.; Баранов, А. А.; Левченко, А. В.

doi:10.1134/s1023193518060046

Cited by 9 publications

(3 citation statements)

References 13 publications

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“…Nanostructured catalysts represent a separate area of materials for personalized energy. In this area, effective catalysts based on nanoparticles of d-and f-element oxides and hydroxides have been developed for the electrocatalytic production of hydrogen from water-alcohol solutions [327][328][329][330][331], photocatalysts based on simple and complex oxides [123, 135-139, 233, 332], carbon monoxide oxidation catalysts [333][334][335][336], and acid-base n-hexane conversion catalysts [337][338][339]. Obtained in the form of isometric nanoparticles, nanorods, nanoplates, and porous compositions (Fig.…”

Section: Characteristics and Features Of Methods For The Synthesis Of New Nanostructured Catalystsmentioning

confidence: 99%

Personalized energy systems based on nanostructured materials

Коваленко¹,

Тугова²,

Попков³

et al. 2021

Nanosystems: Phys. Chem. Math.

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In this paper, the achievements, problems and prospects of creating personalized energy systems based on nanostructured materials are analysed. Various concepts of developing methods and ways of personalized energy provision for autonomous human survival in remote natural habitat, emergency situations of natural disasters and technogenic catastrophes when centralized power supply is unavailable or in an effort to reduce the economic and environmental costs of remote energy production and transportation are also considered. The possibilities and limitations of using traditional and renewable alternative energy sources, processes and devices for extracting, storing and converting their energy into the necessary consumer forms due to fundamental physical laws are discussed as well. The article covers the new nanostructured materials with special functional properties for personalized energy systems development. The mechanisms for formation of the required nanostructures in synthesized materials, especially those with a high content of fractal interfacial formations, are considered as well as methods for studying their structural and phase characteristics that determine the achievability of the specified parameters of model converters and energy storage devices.

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Section: Characteristics and Features Of Methods For The Synthesis Of New Nanostructured Catalystsmentioning

confidence: 99%

Personalized energy systems based on nanostructured materials

Коваленко¹,

Тугова²,

Попков³

et al. 2021

Nanosystems: Phys. Chem. Math.

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“…5-8, 24, 25, 32-41 The electronic effect is caused by shifting of the d-band center of Pt in Pt/Ru alloys away from the Fermi level. 32,33,36,41,[51][52][53][54] M. Wakisaka et al have studied electronic structures of pure Pt and P/Ru alloy electrodes by combining XPS with an electrochemical cell. 51 They have shown that alloying with Ru caused the positive shift of Pt4f7/2.…”

Section: Introduction *mentioning

confidence: 99%

Mathematical model of electrocatalysis of methanol oxidation at the mixture of nanocrystals of platinum and ruthenium dioxide

SPASOJEVIĆ,

MARKOVIĆ,

SPASOJEVIĆ

2022

Rev.Roum.Chim.

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Mathematical model representing a catalytic effect of a nanocrystal mixture of metallic platinum and ruthenium dioxide for electrooxidation of methanol is established. Dependance of a current density of the methanol electrooxidation on the chemical composition and size of nanocrystals is determined in the model. A good agreement between theoretical values and experimental results corroborates that electrooxidation of methanol is guided by a bifunctional mechanism. The model is based on the fact that the catalytic effect is proportional to the length of the contact border between nanocrystals of metallic platinum and nanocrystals of ruthenium dioxide. Ru-OH particles are formed on the Ru atoms at the border of crystal grains, at potentials more negative than on platinum. These species oxidize firmly bound intermediates COad located on the adjacent Pt atoms and thus release the Pt atoms for adsorption and dehydrogenation of subsequent molecules of methanol.

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“…Many attempts have been made in the literature 1,2,5 to identify appropriate electrocatalyst materials. Instead of Pt electrocatalyst, other noble metals such as Pd-Sn have been used for alcohol electrooxidation in an alkaline medium 6 Nanostructured Pd-Sn catalysts for alcohol electro-oxidation in alkaline medium.…”

mentioning

confidence: 99%

Microwave Assisted Synthesis of Pt_xRu_1−x-NiTiO₃: A Novel Hybrid Nanostructured Electrocatalyst for Direct Methanol Oxidation

Chellasamy,

Thangadurai

2024

ECS Adv.

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We have explored the preparation of PtxRu1-x-NiTiO3 hybrid electrocatalysts for the application of methanol oxidization. The X-ray diffraction (XRD) and Raman analysis of PtxRu1-x-NiTiO3 confirmed the rhombohedral crystal structure of NiTiO3 and cubic-structured Pt(Ru) nanoparticles. Transmission electron microscopy (TEM) analysis signifies that Pt(Ru) nanoparticles is decorated on the surface of the NiTiO3. The mean size of the Pt(Ru) nanoparticles calculated from the TEM profile is around 2 nm which corroborates with crystallite size estimated from XRD. X-ray photoelectron spectroscopy analysis confirms the presence of metallic Pt along with its oxidized components (Pt2+ and Pt4+). The cyclic voltammetry analysis evidence that Pt0.5Ru0.5-NiTiO3 has shown better activity in methanol oxidation compared with the other compositions of PtxRu1-x-NiTiO3 along with the maximum current density of 65.41 mA/cm2 with less carbon poisoning. Chronoamperometry and polarization studies represent the stability and electrochemical activity of the Pt0.5Ru0.5-NiTiO3 electrocatalysts towards methanol oxidation. Based on the research carried out in this work, it is concluded that PtxRu1-x-NiTiO3 would be a promising candidate as an electrocatalyst for methanol oxidation in direct methanol fuel cells.

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Anodic Electrocatalysts for Fuel Cells Based on Pt/Ti1–xRu x O2

Cited by 9 publications

References 13 publications

Personalized energy systems based on nanostructured materials

Personalized energy systems based on nanostructured materials

Mathematical model of electrocatalysis of methanol oxidation at the mixture of nanocrystals of platinum and ruthenium dioxide

Microwave Assisted Synthesis of Pt_xRu_1−x-NiTiO₃: A Novel Hybrid Nanostructured Electrocatalyst for Direct Methanol Oxidation

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Anodic Electrocatalysts for Fuel Cells Based on Pt/Ti1–xRu x O2

Cited by 9 publications

References 13 publications

Personalized energy systems based on nanostructured materials

Personalized energy systems based on nanostructured materials

Mathematical model of electrocatalysis of methanol oxidation at the mixture of nanocrystals of platinum and ruthenium dioxide

Microwave Assisted Synthesis of PtxRu1−x-NiTiO3: A Novel Hybrid Nanostructured Electrocatalyst for Direct Methanol Oxidation

Contact Info

Product

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Microwave Assisted Synthesis of Pt_xRu_1−x-NiTiO₃: A Novel Hybrid Nanostructured Electrocatalyst for Direct Methanol Oxidation