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

Tung Ngoc Pham; Ajaikumar Samikannu; Solomon Tesfalidet; Thomas Wågberg; Jyri Pekka Mikkola

doi:10.3390/catal11040500

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

Tung Ngoc Pham^*
, Ajaikumar Samikannu
, Solomon Tesfalidet
, Thomas Wågberg
, Jyri Pekka Mikkola

^*Korresponderande författare för detta arbete

Forskningsoutput: Tidskriftsbidrag › Artikel › Vetenskaplig › Peer review

8 Citeringar (Scopus)

Sammanfattning

In this study, we report a 3D structured carbon foam electrode assembled from a bifunctional 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⁻² 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⁻² at 0.6 V vs. Ag/AgCl, and good stability in 1 M KOH plus 0.5 M CH₃OH electrolyte. The NiCo@CNTs/CF catalyst/electrode provides a potential for application as an anode in water electrolysis and direct methanol fuel cells.

Originalspråk	Engelska
Artikelnummer	500
Tidskrift	Catalysts
Volym	11
Nummer	4
DOI	https://doi.org/10.3390/catal11040500
Status	Publicerad - apr. 2021
MoE-publikationstyp	A1 Tidskriftsartikel-refererad

Finansiering

Funding: The Kempe Foundations are acknowledged for funding. T.W. acknowledges support from Energimyndigheten (45419-1). This work is also supported by the University of Danang, project’s code number: B2018-ÐN02-48. This research is also a part of the activities of the Bio4Energy programme in Sweden and the Åbo Akademi Process Chemistry Centre in Finland.

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

abstract = "In this study, we report a 3D structured carbon foam electrode assembled from a bifunctional 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−2 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−2 at 0.6 V vs. Ag/AgCl, and good stability in 1 M KOH plus 0.5 M CH3OH electrolyte. The NiCo@CNTs/CF catalyst/electrode provides a potential for application as an anode in water electrolysis and direct methanol fuel cells.",

keywords = "Carbon foam, CNTs, MOR, NiCo bi-functional catalyst, OER",

author = "Pham, \{Tung Ngoc\} and Ajaikumar Samikannu and Solomon Tesfalidet and Thomas W{\aa}gberg and Mikkola, \{Jyri Pekka\}",

note = "Funding Information: Funding: The Kempe Foundations are acknowledged for funding. T.W. acknowledges support from Energimyndigheten (45419-1). This work is also supported by the University of Danang, project{\textquoteright}s code number: B2018-{\DH}N02-48. This research is also a part of the activities of the Bio4Energy programme in Sweden and the {\AA}bo Akademi Process Chemistry Centre in Finland. Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2021",

month = apr,

doi = "10.3390/catal11040500",

language = "English",

volume = "11",

journal = "Catalysts",

issn = "2073-4344",

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AU - Pham, Tung Ngoc

AU - Samikannu, Ajaikumar

AU - Tesfalidet, Solomon

AU - Wågberg, Thomas

AU - Mikkola, Jyri Pekka

N1 - Funding Information: Funding: The Kempe Foundations are acknowledged for funding. T.W. acknowledges support from Energimyndigheten (45419-1). This work is also supported by the University of Danang, project’s code number: B2018-ÐN02-48. This research is also a part of the activities of the Bio4Energy programme in Sweden and the Åbo Akademi Process Chemistry Centre in Finland. Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2021/4

Y1 - 2021/4

N2 - In this study, we report a 3D structured carbon foam electrode assembled from a bifunctional 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−2 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−2 at 0.6 V vs. Ag/AgCl, and good stability in 1 M KOH plus 0.5 M CH3OH electrolyte. The NiCo@CNTs/CF catalyst/electrode provides a potential for application as an anode in water electrolysis and direct methanol fuel cells.

AB - In this study, we report a 3D structured carbon foam electrode assembled from a bifunctional 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−2 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−2 at 0.6 V vs. Ag/AgCl, and good stability in 1 M KOH plus 0.5 M CH3OH electrolyte. The NiCo@CNTs/CF catalyst/electrode provides a potential for application as an anode in water electrolysis and direct methanol fuel cells.

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KW - CNTs

KW - MOR

KW - NiCo bi-functional catalyst

KW - OER

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M3 - Article

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

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