PtM/C (M = Ni, Cu, or Ag) electrocatalysts: effects of alloying components on morphology and electrochemically active surface areas

Гутерман, В. Е.; Lastovina, T. A.; Беленов, С. В.; Tabachkova, N. Yu.; Власенко, В. Г.; Ходос, И. И.; Balakshina, E. N.

doi:10.1007/s10008-013-2314-x

Cited by 50 publications

(20 citation statements)

References 40 publications

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“…The Pt-Cu bimetallic system is the object of recent interest . Cu covered by noble metals without carbon support [11,12] and PtCu alloys, Pt(Cu) core-shells and Cudealloyed PtCu supported on carbon blacks [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] have been studied to determine their structure and activity in front of CO and methanol oxidation, ethanol oxidation and the oxygen reduction reaction (ORR). Promising results regarding the reduction of Pt amount and CO poisoning have been obtained.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical performance of carbon-supported Pt(Cu) electrocatalysts for low-temperature fuel cells

Garcia-Cardona

Sirés

Alcaide

et al. 2020

International Journal of Hydrogen Energy

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Section: Introductionmentioning

confidence: 99%

Electrochemical performance of carbon-supported Pt(Cu) electrocatalysts for low-temperature fuel cells

Garcia-Cardona

Sirés

Alcaide

et al. 2020

International Journal of Hydrogen Energy

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“…At the same time, the values of the average sized nanoparticles, determined by TEM, are slightly larger than the average crystallite sizes for all catalysts studied (Table 1). Such a situation is characteristic of similar materials [37,38]. In both cases, the particle size increases in the row Pt/(SnO 2 /C) < Pt/C < PtCu/C.…”

Section: Resultsmentioning

confidence: 80%

Methanol, Ethanol, and Formic Acid Oxidation on New Platinum-Containing Catalysts

et al. 2021

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Electrooxidation of methanol, ethanol, and formic acid was studied on three platinum-containing electrocatalysts: PtCu/C, Pt/(SnO2/C), and Pt/C, Pt content being about 20 wt%. In all reactions, the integral specific activity of the catalysts, estimated from the results of cyclic voltammetry, grows in the Pt/C < Pt/(SnO2/C) < PtCu/C row. The influence of the reagent nature subjected to electrooxidation is manifested both in the difference of the absolute rate values of the corresponding reactions, decreasing in the order CH3OH > HCOOH > C2H5OH, and in the different ratio of these rates on different catalysts and at different potentials. Pt/(SnO2/C) catalyst containing SnO2 nanoparticles is the most active among the studied catalysts in methanol and formic acid electrooxidation reactions under potentiostatic conditions at the E = 0.60 V. Moreover, in formic acid electrooxidation reaction it is significantly superior to even the PtRu/C commercial catalyst. The reasons for the positive influence of Cu atoms and SnO2 nanoparticles on the catalytic activity of platinum are presumably associated with different effects: Interaction of the d-orbitals of copper and platinum atoms in bimetallic nanoparticles and implementation of the bifunctional catalysis mechanism on the adjacent platinum and tin dioxide nanoparticles.

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“…In contrast, the CVs curves of PdPt/C in figure 2d shows similar characteristics for carbon‐supported platinum (Pt/C), the hydrogen adsorption/desorption characteristics peaks in the potential region of −0.80 to −0.30 V (vs. NHE), three anodic desorption peaks and two cathodic adsorption peaks assigned to weakly and strongly bonded hydrogen adatoms [35,36] . In the anodic scan, the double layer region can be clearly identified from −0.30 to −0.01 V (vs. NHE), then the oxide formation is carried out at around 0.07 V (vs. NHE).…”

Section: Resultsmentioning

confidence: 84%

Characterization and Electrocatalytic Features of PtPd and PdPt Bimetallic Nanoparticles for Methanol Electro‐oxidation

et al. 2021

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This work entails a comprehensive study on PtPd, and PdPt bimetallic nanoparticles (BNPs) supported on Vulcan XC‐72 carbon towards methanol oxidation reaction (MOR) in alkaline media. BNPs with different compositions were synthesized using a flexible and facile polyol method through a heterogeneous nucleation process. The homogeneous BNPs were characterized by SEM, XRD, HR‐TEM and XRF to analyse the crystallographic structure and verified the controlled characteristics. The electrochemical properties and stability were investigated using cyclic voltammetry and chronoamperometry, respectively. As a consequence of the electrocatalysts’ controlled composition, a direct correlation between the catalytic activity and the shift in the PtO/PdO reduction potential was observed. The optimal electrocatalyst that overcomes the catalytic performance of PdPt structure, also showed an improvement in the CO anti‐poisoning ability was PtPd (1 : 0.5)/C with a current density of 12.56‐fold higher than of commercial Pt/C. This study about different Pt/Pd structures may provide valuable information for developing new and efficient electrocatalysts towards MOR.

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PtM/C (M = Ni, Cu, or Ag) electrocatalysts: effects of alloying components on morphology and electrochemically active surface areas

Cited by 50 publications

References 40 publications

Electrochemical performance of carbon-supported Pt(Cu) electrocatalysts for low-temperature fuel cells

Electrochemical performance of carbon-supported Pt(Cu) electrocatalysts for low-temperature fuel cells

Methanol, Ethanol, and Formic Acid Oxidation on New Platinum-Containing Catalysts

Characterization and Electrocatalytic Features of PtPd and PdPt Bimetallic Nanoparticles for Methanol Electro‐oxidation

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