NiCo Nanoneedles on 3D Carbon Nanotubes/Carbon Foam Electrode as an Efficient Bi-Functional Catalyst for Electro-Oxidation of Water and Methanol

NiCo Nanoneedles on 3D Carbon Nanotubes/Carbon Foam Electrode as an Efficient Bi-Functional Catalyst for Electro-Oxidation of Water and Methanol

In this study, we report a 3D structured carbon foam electrode assembled from a bi-functional NiCo catalyst, carbon nanotubes (CNT), and a monolith 3D structured carbon foam (CF) as a highly active and stable electrode for oxygen evolution reaction (OER) and methanol oxidation reaction (MOR). When t...

Full description

Bibliographic Details
Main Authors: Tung Ngoc Pham, Ajaikumar Samikannu, Solomon Tesfalidet, Thomas Wågberg, Jyri-Pekka Mikkola
Format: Article
Language:English
Published: MDPI AG 2021-04-01
Series:Catalysts
Subjects:
NiCo bi-functional catalyst
CNTs
carbon foam
OER
MOR
Online Access:https://www.mdpi.com/2073-4344/11/4/500
id doaj-2962740c24b54ff3973c6db726d60676
record_format Article
spelling doaj-2962740c24b54ff3973c6db726d606762021-04-15T23:02:41ZengMDPI AGCatalysts2073-43442021-04-011150050010.3390/catal11040500NiCo Nanoneedles on 3D Carbon Nanotubes/Carbon Foam Electrode as an Efficient Bi-Functional Catalyst for Electro-Oxidation of Water and MethanolTung Ngoc Pham0Ajaikumar Samikannu1Solomon Tesfalidet2Thomas Wågberg3Jyri-Pekka Mikkola4Chemical-Biological Centre, Technical Chemistry, Department of Chemistry, Umeå University, SE-90187 Umeå, SwedenChemical-Biological Centre, Technical Chemistry, Department of Chemistry, Umeå University, SE-90187 Umeå, SwedenChemical-Biological Centre, Technical Chemistry, Department of Chemistry, Umeå University, SE-90187 Umeå, SwedenDepartment of Physics, Umeå University, SE-90187 Umeå, SwedenChemical-Biological Centre, Technical Chemistry, Department of Chemistry, Umeå University, SE-90187 Umeå, SwedenIn this study, we report a 3D structured carbon foam electrode assembled from a bi-functional NiCo catalyst, carbon nanotubes (CNT), and a monolith 3D structured carbon foam (CF) as a highly active and stable electrode for oxygen evolution reaction (OER) and methanol oxidation reaction (MOR). When the NiCo@CNTs/CF electrode was used as an anode in OER, after the anodization step, the electrode required a small overpotential of 320 mV to reach the current density of 10 mA cm<sup>−2</sup> and demonstrated excellent stability over a long testing time (total 30 h) in 1 M KOH. The as-prepared NiCo@CNTs/CF electrode also exhibited a good performance towards methanol oxidation reaction (MOR) with high current density, 100 mA cm<sup>−2</sup> at 0.6 V vs. Ag/AgCl, and good stability in 1 M KOH plus 0.5 M CH<sub>3</sub>OH electrolyte. The NiCo@CNTs/CF catalyst/electrode provides a potential for application as an anode in water electrolysis and direct methanol fuel cells.https://www.mdpi.com/2073-4344/11/4/500NiCo bi-functional catalystCNTscarbon foamOERMOR
collection DOAJ
language English
format Article
sources DOAJ
author Tung Ngoc Pham
Ajaikumar Samikannu
Solomon Tesfalidet
Thomas Wågberg
Jyri-Pekka Mikkola
spellingShingle Tung Ngoc Pham
Ajaikumar Samikannu
Solomon Tesfalidet
Thomas Wågberg
Jyri-Pekka Mikkola
NiCo Nanoneedles on 3D Carbon Nanotubes/Carbon Foam Electrode as an Efficient Bi-Functional Catalyst for Electro-Oxidation of Water and Methanol
Catalysts
NiCo bi-functional catalyst
CNTs
carbon foam
OER
MOR
author_facet Tung Ngoc Pham
Ajaikumar Samikannu
Solomon Tesfalidet
Thomas Wågberg
Jyri-Pekka Mikkola
author_sort Tung Ngoc Pham
title NiCo Nanoneedles on 3D Carbon Nanotubes/Carbon Foam Electrode as an Efficient Bi-Functional Catalyst for Electro-Oxidation of Water and Methanol
title_short NiCo Nanoneedles on 3D Carbon Nanotubes/Carbon Foam Electrode as an Efficient Bi-Functional Catalyst for Electro-Oxidation of Water and Methanol
title_full NiCo Nanoneedles on 3D Carbon Nanotubes/Carbon Foam Electrode as an Efficient Bi-Functional Catalyst for Electro-Oxidation of Water and Methanol
title_fullStr NiCo Nanoneedles on 3D Carbon Nanotubes/Carbon Foam Electrode as an Efficient Bi-Functional Catalyst for Electro-Oxidation of Water and Methanol
title_full_unstemmed NiCo Nanoneedles on 3D Carbon Nanotubes/Carbon Foam Electrode as an Efficient Bi-Functional Catalyst for Electro-Oxidation of Water and Methanol
title_sort nico nanoneedles on 3d carbon nanotubes/carbon foam electrode as an efficient bi-functional catalyst for electro-oxidation of water and methanol
publisher MDPI AG
series Catalysts
issn 2073-4344
publishDate 2021-04-01
description In this study, we report a 3D structured carbon foam electrode assembled from a bi-functional NiCo catalyst, carbon nanotubes (CNT), and a monolith 3D structured carbon foam (CF) as a highly active and stable electrode for oxygen evolution reaction (OER) and methanol oxidation reaction (MOR). When the NiCo@CNTs/CF electrode was used as an anode in OER, after the anodization step, the electrode required a small overpotential of 320 mV to reach the current density of 10 mA cm<sup>−2</sup> and demonstrated excellent stability over a long testing time (total 30 h) in 1 M KOH. The as-prepared NiCo@CNTs/CF electrode also exhibited a good performance towards methanol oxidation reaction (MOR) with high current density, 100 mA cm<sup>−2</sup> at 0.6 V vs. Ag/AgCl, and good stability in 1 M KOH plus 0.5 M CH<sub>3</sub>OH electrolyte. The NiCo@CNTs/CF catalyst/electrode provides a potential for application as an anode in water electrolysis and direct methanol fuel cells.
topic NiCo bi-functional catalyst
CNTs
carbon foam
OER
MOR
url https://www.mdpi.com/2073-4344/11/4/500
work_keys_str_mv AT tungngocpham niconanoneedleson3dcarbonnanotubescarbonfoamelectrodeasanefficientbifunctionalcatalystforelectrooxidationofwaterandmethanol
AT ajaikumarsamikannu niconanoneedleson3dcarbonnanotubescarbonfoamelectrodeasanefficientbifunctionalcatalystforelectrooxidationofwaterandmethanol
AT solomontesfalidet niconanoneedleson3dcarbonnanotubescarbonfoamelectrodeasanefficientbifunctionalcatalystforelectrooxidationofwaterandmethanol
AT thomaswagberg niconanoneedleson3dcarbonnanotubescarbonfoamelectrodeasanefficientbifunctionalcatalystforelectrooxidationofwaterandmethanol
AT jyripekkamikkola niconanoneedleson3dcarbonnanotubescarbonfoamelectrodeasanefficientbifunctionalcatalystforelectrooxidationofwaterandmethanol
_version_ 1721525916459335680

Similar Items