Lead and Nitrogen Co-Doped Multi-Walled Carbon Nanotube Electrocatalyst for Oxygen Reduction Reaction
Journal of The Electrochemical Society 2023
Ehsan Zarmehri, Ragle Raudsepp, Krišjānis Šmits, Tanel Käämbre, Andris Šutka

The electrocatalysis of oxygen reduction reaction (ORR) on lead and nitrogen co-doped multi-walled carbon nanotube (Pb/N/MWCNT) composite catalyst has been investigated in the neutral, acidic and alkaline media. The mixture of lead phthalocyanine (PbPc) and MWCNTs was pyrolysed in nitrogen atmosphere to achieve co-doping of lead and nitrogen. The successful co-doping as well as formation of Pb nanoparticles were confirmed with the use of various physical and surface characterisation methods such as scanning and transmission electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy and X-ray diffraction analysis. This work brings forth the electrocatalytic effect of Pb and nitrogen co-doping of carbon by a detailed electrochemical analysis using rotating disk electrode (RDE) method. The Pb and nitrogen co-doped MWCNT material demonstrate a reasonable electrocatalytic ORR activity in acidic, neutral and alkaline media. The results indicate great potential of Pb to be employed in electrocatalyst design as co-doping agent to achieve superior cathode catalysts for microbial, proton and anion exchange membrane fuel cells.


Keywords
Electrocatalyst, Carbon Nanotube
DOI
10.1149/1945-7111/ad0072
Hyperlink
https://iopscience.iop.org/article/10.1149/1945-7111/ad0072

Zarmehri, E., Raudsepp, R., Šmits, K., Käämbre, T., Šutka, A. Lead and Nitrogen Co-Doped Multi-Walled Carbon Nanotube Electrocatalyst for Oxygen Reduction Reaction. Journal of The Electrochemical Society, 2023, Vol. 170, No. 11, Article number 114505. ISSN 1945-7111. Pieejams: doi:10.1149/1945-7111/ad0072

Publication language
English (en)
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