Novel low-temperature synthesis of semiconducting transition metal chalcogenide electrocatalyst for multielectron charge transfer: molecular oxygen reduction

Solorza‐Feria, O.; Ellmer, K.; Giersig, Michael; Alonso-Vante, Nicolás

doi:10.1016/0013-4686(94)85149-2

Cited by 215 publications

(101 citation statements)

References 13 publications

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“…The amorphous Mo x Ru y Se z /C catalyst was synthesized by reacting metal carbonyls with Se in xylene at 140°C under stirring and refluxing conditions for 20 h, as described by Solorza-Feria and coworkers. 22 Finally, the Ru-NH 3 /C catalyst was synthesized by heat-treating Ru 3+ -impregnated carbon under an NH 3 atmosphere at 800°C for 1 h. Here an NH 3 gas was used as the N-precursor instead of propylene diammine. Figure 8a and b summarizes the polarization curves obtained on the rotating disk electrodes and the percentage of H 2 O 2 , respectively, measured for various Ru-based catalysts.…”

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confidence: 99%

Development of Ruthenium-Based Catalysts for Oxygen Reduction Reaction

Liu

Kim

Lee

et al. 2007

J. Electrochem. Soc.

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A process was developed to synthesize ruthenium-based chelate (RunormalNx) electrocatalysts for the oxygen reduction reaction, using RunormalCl3 and propylene diammine as the Ru and N precursors, respectively. High-temperature pyrolysis has a critical role in the formation of the catalytic Ru–N sites for oxygen reduction. The RunormalNx catalyst modified in the presence of nitrogen-containing organic exhibited comparable catalytic activity and selectivity for oxygen reduction to the carbon-supported Pt catalyst in acidic media. The catalyst generates less than 2% hydrogen peroxide during oxygen reduction.

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confidence: 99%

Development of Ruthenium-Based Catalysts for Oxygen Reduction Reaction

Liu

Kim

Lee

et al. 2007

J. Electrochem. Soc.

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“…Nowadays, non-precious metal-based electrocatalysts have exhibited promising activities towards oxygen reduction reaction (ORR) [1][2][3][4]. Among them, cobalt based selenides (CoSex) are attracting enormous interest as new ORR electrocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Iron and nickel doped CoSe2 as efficient non precious metal catalysts for oxygen reduction

Jin

et al. 2017

International Journal of Hydrogen Energy

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Iron and nickel doped CoSe2 as efficient non precious metal catalysts for oxygen reduction AbstractIron and nickel doped CoSe2 were prepared by solvothermal method, and they were proved to be ternary chalcogenides by series of physical characterization. The effects of the iron and nickel contents on the oxygen reduction reaction were investigated by electrochemical measurements, and the highest activities were obtained on Co0.7Fe0.3Se2 and Co0.7Ni0.3Se2, respectively. Both Co0.7Fe0.3Se2 and Co0.7Ni0.3Se2 presented four-electron pathway. Furthermore, Co0.7Fe0.3Se2 exhibited more positive cathodic peak potential (0.564 V) and onset potential (0.759 V) than these of Co0.7Ni0.3Se2 (0.558 V and 0.741 V). And Co0.7Fe0.3Se2 displayed even superior stability and better tolerance to methanol, ethanol and ethylene glycol crossover effects than the commercial Pt/C (20 wt% Pt). Abstract: Iron and nickel doped CoSe2 were prepared by solvothermal method, and they were proved to be ternary chalcogenides by series of physical characterization.The effects of the iron and nickel contents on the oxygen reduction reaction were investigated by electrochemical measurements, and the highest activities were obtained on Co0.7Fe0.3Se2 and Co0.7Ni0.3Se2, respectively. Both Co0.7Fe0.3Se2 and Co0.7Ni0.3Se2 presented four-electron pathway. Furthermore, Co0.7Fe0.3Se2 exhibited more positive cathodic peak potential (0.564 V) and onset potential (0.759 V) than these of Co0.7Ni0.3Se2 (0.558V and 0.741V). And Co0.7Fe0.3Se2 displayed even superior stability and better tolerance to methanol, ethanol and ethylene glycol crossover effects than the commercial Pt/C (20 wt% Pt).

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“…From synthesis point of view, the main methods for preparing multi-metallic catalysts, that are currently used in the field of electrocatalysis, are e.g., colloidal, [19][20][21][22][23] micro-emulsion [24][25][26][27][28] and the carbonyl chemical route. [29][30][31][32][33][34][35][36] The problem with particles of nanometric size is the fact that they are usually not thermodynamically stable and might change over time or during reaction conditions, and corrosioninduced dissolution of alloying components leads to surface roughening. The thermodynamic instability can, furthermore, be due to the excess surface energy, with the result that these particles tend to coagulate, to aggregate themselves or agglomerate at the time of their stabilization, making materials synthesis one of the most important parameters to control.…”

Section: Introductionmentioning

confidence: 99%

“…This route of synthesis is rarely used in spite of the interesting prospects that it presents. 32,33,[36][37][38] In the present work the chemical synthesis and physical-chemical characterization of these nanoalloy materials are combined with theoretical approaches to get more insights into the stability of the catalyst.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, electrochemical characterization and molecular dynamics studies of surface segregation of platinum nano-alloy electrocatalysts

Favry

Wang

Fantauzzi

et al. 2011

Phys. Chem. Chem. Phys.

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Alloy Pt-M (M = Co, Ni) nanocatalysts, supported on carbon Vulcan XC-72, were synthesized using the carbonyl chemical route. A high dispersion on such substrate was revealed by transmission electron microscopy (TEM). Alloy formation on the nanometre scale length was shown by high-resolution transmission microscopy (HRTEM) and energy dispersive X-ray spectroscopy (EDX) on a nanoparticle. The metal M in Pt-M nanoalloys segregates preferentially on the nanoparticles' surface, as determined by the hydrogen adsorption electrochemical reaction. An increased tolerance towards methanol of such nanoalloy materials was observed for the oxygen reduction reaction (ORR) in acid media. To better understand the structure and segregation phenomena of these nanoalloys, molecular dynamics (MD) with a self-optimized reactive force field was applied.

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Novel low-temperature synthesis of semiconducting transition metal chalcogenide electrocatalyst for multielectron charge transfer: molecular oxygen reduction

Cited by 215 publications

References 13 publications

Development of Ruthenium-Based Catalysts for Oxygen Reduction Reaction

Development of Ruthenium-Based Catalysts for Oxygen Reduction Reaction

Iron and nickel doped CoSe2 as efficient non precious metal catalysts for oxygen reduction

Synthesis, electrochemical characterization and molecular dynamics studies of surface segregation of platinum nano-alloy electrocatalysts

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