Nitrogen doped Carbon Nanotubes as Electrocatalyst for Oxygen Reduction Reaction

Loading...
Thumbnail Image

Access rights

openAccess

URL

Journal Title

Journal ISSN

Volume Title

A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Date

2019-11

Major/Subject

Mcode

Degree programme

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.

Description

Keywords

Seawater, Deoxygenation, Oxygen reduction, Carbon nanotubes, MICROBIAL FUEL-CELLS, SILVER, CATALYSTS, CATHODE, ELECTRODES, ELECTROREDUCTION, SEAWATER, MEDIA, WATER, ACID

Other note

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