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Fe/Co/Ni mixed oxide nanoparticles supported on oxidized multi-walled carbon nanotubes as electrocatalysts for the oxygen reduction and the oxygen evolution reactions in alkaline media. / Kazakova, Mariya A.; Morales, Dulce M.; Andronescu, Corina et al.

In: Catalysis Today, Vol. 357, 01.11.2020, p. 259-268.

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@article{693ae57a7a094141b60d974c3b04a80f,
title = "Fe/Co/Ni mixed oxide nanoparticles supported on oxidized multi-walled carbon nanotubes as electrocatalysts for the oxygen reduction and the oxygen evolution reactions in alkaline media",
abstract = " Fabrication of efficient and cost-effective bifunctional oxygen electrocatalysts for both the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) remains a challenge for the development of rechargeable metal-air batteries and unitized regenerative fuel cells technologies. Herein, we report high-performance bifunctional ORR/OER electrocatalysts consisting of mixed transition metal (Fe, Co, Ni) oxide nanoparticles supported on oxidized multi-walled carbon nanotubes (MWCNT). Investigation of the ORR and OER activity of samples with different metal compositions showed that trimetallic/MWCNT composites having Fe:Ni:Co = x:x:(1-2x) ratios, with 0.25 ≤ x ≤ 0.4, exhibit highest bifunctional activity in terms of the reversible ORR/OER overvoltage at a given current density. Moreover, the trimetallic catalysts exhibited improved selectivity with respect to the reduction of O 2 to OH − compared to the bimetallic Fe-Ni, Fe-Co and Co-Ni catalysts, thus revealing synergistic interactions among the metal oxide components. Correlation of the electrocatalytic activity with the structure of the composites is discussed for the most representative cases. ",
keywords = "Bifunctional electrocatalyst, Fe-Co-Ni oxide nanoparticles, Oxidized multi-walled carbon nanotubes, Oxygen evolution reaction, Oxygen reduction reaction, PERFORMANCE, BIFUNCTIONAL ELECTROCATALYST, CO, PHOSPHIDE, XPS, SPECTRA, CATALYSTS, FE",
author = "Kazakova, {Mariya A.} and Morales, {Dulce M.} and Corina Andronescu and Karina Elumeeva and Selyutin, {Alexander G.} and Ishchenko, {Arcady V.} and Golubtsov, {Georgiy V.} and Stefan Dieckh{\"o}fer and Wolfgang Schuhmann and Justus Masa",
note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",
year = "2020",
month = nov,
day = "1",
doi = "10.1016/j.cattod.2019.02.047",
language = "English",
volume = "357",
pages = "259--268",
journal = "Catalysis Today",
issn = "0920-5861",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Fe/Co/Ni mixed oxide nanoparticles supported on oxidized multi-walled carbon nanotubes as electrocatalysts for the oxygen reduction and the oxygen evolution reactions in alkaline media

AU - Kazakova, Mariya A.

AU - Morales, Dulce M.

AU - Andronescu, Corina

AU - Elumeeva, Karina

AU - Selyutin, Alexander G.

AU - Ishchenko, Arcady V.

AU - Golubtsov, Georgiy V.

AU - Dieckhöfer, Stefan

AU - Schuhmann, Wolfgang

AU - Masa, Justus

N1 - Publisher Copyright: © 2019 Elsevier B.V. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/11/1

Y1 - 2020/11/1

N2 - Fabrication of efficient and cost-effective bifunctional oxygen electrocatalysts for both the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) remains a challenge for the development of rechargeable metal-air batteries and unitized regenerative fuel cells technologies. Herein, we report high-performance bifunctional ORR/OER electrocatalysts consisting of mixed transition metal (Fe, Co, Ni) oxide nanoparticles supported on oxidized multi-walled carbon nanotubes (MWCNT). Investigation of the ORR and OER activity of samples with different metal compositions showed that trimetallic/MWCNT composites having Fe:Ni:Co = x:x:(1-2x) ratios, with 0.25 ≤ x ≤ 0.4, exhibit highest bifunctional activity in terms of the reversible ORR/OER overvoltage at a given current density. Moreover, the trimetallic catalysts exhibited improved selectivity with respect to the reduction of O 2 to OH − compared to the bimetallic Fe-Ni, Fe-Co and Co-Ni catalysts, thus revealing synergistic interactions among the metal oxide components. Correlation of the electrocatalytic activity with the structure of the composites is discussed for the most representative cases.

AB - Fabrication of efficient and cost-effective bifunctional oxygen electrocatalysts for both the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) remains a challenge for the development of rechargeable metal-air batteries and unitized regenerative fuel cells technologies. Herein, we report high-performance bifunctional ORR/OER electrocatalysts consisting of mixed transition metal (Fe, Co, Ni) oxide nanoparticles supported on oxidized multi-walled carbon nanotubes (MWCNT). Investigation of the ORR and OER activity of samples with different metal compositions showed that trimetallic/MWCNT composites having Fe:Ni:Co = x:x:(1-2x) ratios, with 0.25 ≤ x ≤ 0.4, exhibit highest bifunctional activity in terms of the reversible ORR/OER overvoltage at a given current density. Moreover, the trimetallic catalysts exhibited improved selectivity with respect to the reduction of O 2 to OH − compared to the bimetallic Fe-Ni, Fe-Co and Co-Ni catalysts, thus revealing synergistic interactions among the metal oxide components. Correlation of the electrocatalytic activity with the structure of the composites is discussed for the most representative cases.

KW - Bifunctional electrocatalyst

KW - Fe-Co-Ni oxide nanoparticles

KW - Oxidized multi-walled carbon nanotubes

KW - Oxygen evolution reaction

KW - Oxygen reduction reaction

KW - PERFORMANCE

KW - BIFUNCTIONAL ELECTROCATALYST

KW - CO

KW - PHOSPHIDE

KW - XPS

KW - SPECTRA

KW - CATALYSTS

KW - FE

UR - http://www.scopus.com/inward/record.url?scp=85061814342&partnerID=8YFLogxK

U2 - 10.1016/j.cattod.2019.02.047

DO - 10.1016/j.cattod.2019.02.047

M3 - Article

AN - SCOPUS:85061814342

VL - 357

SP - 259

EP - 268

JO - Catalysis Today

JF - Catalysis Today

SN - 0920-5861

ER -

ID: 18908493