Nitrogen doped Carbon Nanotubes as Electrocatalyst for Oxygen Reduction Reaction

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2019-11
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Language
en
Pages
12
10340-10351
Series
International Journal of Electrochemical Science, Volume 14, issue 11
Abstract
The oxygen reduction reaction on nitrogen doped multiwalled carbon nanotubes (N-MCNTs) is studied for its application for deoxygenation of seawater. N-MCNTs were synthesized using commercial MCNTs and polyaniline as nitrogen precursor and annealing at a high temperature. The ORR was studied on N-MCNTs in 0.5 M sodium chloride solution using a rotating disk electrode, and physical characterization of the electrocatalysts was performed using X-ray diffraction, mass spectroscopy and transmission electron microscope techniques. The material showed high activity for the ORR in the chloride electrolyte. The onset potential for N-MCNTs was 0.94 V vs RHE. Koutecky-Levich analysis showed that the electrons transfer mainly followed the four-electron pathway, and the electrocatalyst showed good stability during a 15-h stability test.
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Keywords
Seawater, Deoxygenation, Oxygen reduction, Carbon nanotubes, MICROBIAL FUEL-CELLS, SILVER, CATALYSTS, CATHODE, ELECTRODES, ELECTROREDUCTION, SEAWATER, MEDIA, WATER, ACID
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Citation
Dotel , U R , Davodi , F , Sorsa , O , Kallio , T & Hemmingsen , T 2019 , ' Nitrogen doped Carbon Nanotubes as Electrocatalyst for Oxygen Reduction Reaction ' , International Journal of Electrochemical Science , vol. 14 , no. 11 , pp. 10340-10351 . https://doi.org/10.20964/2019.11.06