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Hydrothermal Carbon/Carbon Nanotube Composites as Electrocatalysts for the Oxygen Reduction Reaction by Morais, Rafael G.; Rey-Raap, Natalia; Costa, Rui S.; Pereira, Clara; Guedes, Alexandra; Figueiredo, José L.; Pereira, M. Fernando R. is a Engineering article available to read on EtoBox.

What is Hydrothermal Carbon/Carbon Nanotube Composites as Electrocatalysts for the Oxygen Reduction Reaction about?

The oxygen reduction reaction is an essential reaction in several energy conversion devices such as fuel cells and batteries. So far, the best performance is obtained by using platinum-based electrocatalysts, which make the devices really expensive, and thus, new and more affordable materials should be designed. Biomass-derived carbons were prepared by hydrothermal carbonization in the presence of carbon nanotubes with different oxygen surface functionalities to evaluate their effect on the final properties. Additionally, nitrogen functional groups were also introduced by ball milling the carbon composite together with melamine. The oxygen groups on the surface of the carbon nanotubes favor their dispersion into the precursor mixture and the formation of a more homogenous carbon structure with higher mechanical strength. This type of structure partially avoids the crushing of the nanotubes and the carbon spheres during the ball milling, resulting in a carbon composite with enhanced electrical conductivity. Undoped and N-doped composites were used as electrocatalysts for the oxygen reduction reaction. The onset potential increases by 20% due to the incorporation of carbon nanotubes

Who reads Hydrothermal Carbon/Carbon Nanotube Composites as Electrocatalysts for the Oxygen Reduction Reaction?

It is typically read by researchers, students, and practitioners in Engineering.

Author
Morais, Rafael G.; Rey-Raap, Natalia; Costa, Rui S.; Pereira, Clara; Guedes, Alexandra; Figueiredo, José L.; Pereira, M. Fernando R.
Publisher
Multidisciplinary Digital Publishing Institute (MDPI) (ISSN 2504-477X)
Published
2020
Language
EN
Field
Engineering (Physical Sciences)

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