ISSN 1608-4039 (Print)
ISSN 1680-9505 (Online)

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Vinogradov K. Y., Davydov V. M., Tokranova E. O., Shafigulin R. V., Vostrikov S. V., Bulanova A. V. Catalysts for oxygen electroreduction in alkaline medium based on carbon nanotubes modified with urea and phthalocyanines of iron, cobalt and palladium. Electrochemical Energetics, 2025, vol. 25, iss. 3, pp. 148-160. DOI: 10.18500/1608-4039-2025-25-3-148-160, EDN: YSFGDF

This is an open access article distributed under the terms of Creative Commons Attribution 4.0 International License (CC-BY 4.0).
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Language: 
Russian
Heading: 
Fuel cells
Article type: 
Article
UDC: 
541.135:544.6
DOI: 
10.18500/1608-4039-2025-25-3-148-160
EDN: 
YSFGDF

Catalysts for oxygen electroreduction in alkaline medium based on carbon nanotubes modified with urea and phthalocyanines of iron, cobalt and palladium

Autors: 
Vinogradov Kirill Yu., Samara National Research University
Davydov Vladislav M., Samara National Research University
Tokranova Elena O., Samara National Research University
Shafigulin Roman V. , Samara National Research University
Vostrikov Sergei V., Samara National Research University
Bulanova Andzhela V., Samara National Research University
Abstract: 

Catalysts for oxygen reduction in the alkaline electrolyte based on multi-walled carbon nanotubes modified with urea and phthalocyanines of iron, cobalt and palladium were synthesized and studied. Physicochemical studies of the surface of the synthesized materials were carried out using porosimetry, Raman spectroscopy, X-ray phase analysis and X-ray photoelectron spectroscopy. The catalyst doped with metal phthalocyanines (MWCNT(Urea)_CoPc_FePc_Pd) has the largest surface area. It can be assumed that the high specific surface area of this catalyst is obtained due to the formation of new layers of hierarchical carbon on the surface of the nanotubes during high-temperature pyrolysis. It was established that metal phthalocyanines are nitrogen dopants in the structure of carbon nanotubes. The electrocatalytic properties of the synthesized catalysts in the oxygen reduction reaction were studied using the voltammetric method.

Key words: 
oxygen electroreduction
oxygen electroreduction catalysts
alkaline fuel cells
carbon nanotubes
Acknowledgments: 
The study was supported by the grant of the Russian Science Foundation No. 23-73-00063, https://rscf.ru/project/23-73-00063/.
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Received: 
21.08.2025
Accepted: 
10.09.2025
Published: 
30.09.2025