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Partially unzipped multi-walled carbon nanotubes—promising material for oxygen electrodes of fuel cells

Authors
  • Danilov, Michail O.1
  • Dovbeshko, Galina I.2
  • Rusetskyi, Ihor A.1
  • Pekhnyo, Vasil I.1
  • Nikolenko, Andrii S.3
  • Kolbasov, Gennadii Ya.1
  • 1 V. I. Vernadskii Institute of General and Inorganic Chemistry of the National Academy of Science of Ukraine, 32/34 Academic Palladin Avenue, Kiev, 03142, Ukraine , Kiev (Ukraine)
  • 2 Institute of Physics of the National Academy of Science of Ukraine, 46 Nauky Avenue, Kiev, 03039, Ukraine , Kiev (Ukraine)
  • 3 Institute of Semiconductor Physics of the National Academy of Science of Ukraine, 45, Nauky Avenue, Kiev, 03028, Ukraine , Kiev (Ukraine)
Type
Published Article
Journal
Applied Physics A
Publisher
Springer-Verlag
Publication Date
Sep 05, 2020
Volume
126
Issue
10
Identifiers
DOI: 10.1007/s00339-020-03951-2
Source
Springer Nature
Keywords
License
Yellow

Abstract

Partially unzipped multi-walled carbon nanotubes were used as an active layer of the oxygen electrodes. The obtaining of partially unzipped carbon nanotubes was confirmed by X-ray diffraction, transmission electron microscopy and Raman spectroscopy. An investigation of the electrocatalytic characteristics of such oxygen electrodes was carried out in a fuel half-cell with an alkaline electrolyte. Electrochemical studies have established that the obtained partially unzipped multi-walled carbon nanotubes are promising materials as a catalyst carrier for oxygen electrodes of fuel cells. The oxygen electrodes based on the electrochemically obtained carbon materials were stable for six months at a discharge current density of 200 mA cm−2.

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