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Title:Unveiling the potential of ▫$(CoFeNiMnCr)_3O_4$▫ high-entropy oxide synthesized from CoFeNiMnCr high-entropy alloy for efficient oxygen-evolution reaction
Authors:ID Ljubec Božiček, Barbara (Author)
ID Hreščak, Jitka (Author)
ID Kušter, Monika (Author)
ID Kovač, Janez (Author)
ID Naglič, Iztok (Author)
ID Markoli, Boštjan (Author)
ID Šetina, Barbara (Author)
ID Šala, Martin (Author)
ID Drev, Sandra (Author)
ID Marinko, Živa (Author)
ID Čeh, Miran (Author)
ID Alcantara Marinho, Belisa (Author)
Files:.pdf PDF - Presentation file, download (2,75 MB)
MD5: 27A7C9224617BAAEB4531AEBFE322D59
 
URL URL - Source URL, visit https://link.springer.com/article/10.1007/s10853-024-09710-5
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo IMT - Institute of Metals and Technology
Abstract:Electrochemical water-splitting is a promising green technology for the production of hydrogen. One of the bottlenecks, however, is the oxygen evolution half-reaction (OER), which could be overcome with the development of a suitable electrocatalyst. Recently, non-noble metal, high-entropy oxides (HEO) have been investigated as potential OER electrocatalysts, but complex synthesis approaches that usually produce the material in powder form limit their wider utilization. Here, an innovative synthesis strategy of formulating a nanostructured (CoFeNiMnCr)3O4 HEO thin film on a CoFeNiMnCr high entropy alloy (HEA) using facile electrochemical and thermal treatment methods is presented. The CoFeNiMnCr HEA serves as exceptional support to be electrochemically treated in an ethylene glycol electrolyte with ammonium fluoride to form a rough and microporous structure with nanopits. The electrochemically treated CoFeNiMnCr HEA surface is more prone to oxidation during a low-temperature thermal treatment, leading to the growth of a spinel (CoFeNiMnCr)3O4 HEO thin film. The (CoFeNiMnCr)3O4 HEO exhibits a superior overpotential of 341 mV at 10 mA cm−2 and a Tafel slope of 50 mV dec−1 along with remarkable long-term stability in alkaline media. The excellent catalytic activity and stability for the OER can serve as a promising platform for the practical utilization of (CoFeNiMnCr)3O4 HEO.
Keywords:electrochemical water-spliting, electrocatalysts
Publication status:Published
Publication version:Version of Record
Publication date:01.06.2024
Publisher:Springer Nature Link
Year of publishing:2024
Number of pages:str. 9189-9207
Numbering:Vol. 59, iss. 21
Source:Nemčija
PID:20.500.12556/DiRROS-21102 New window
UDC:54
ISSN on article:1573-4803
DOI:10.1007/s10853-024-09710-5 New window
COBISS.SI-ID:195390211 New window
Copyright:© The Author(s), 2024
Note:Nasl. z nasl. zaslona; Soavtorji: Jitka Hreščak, Monika Kušter, Janez Kovač, Iztok Naglič, Boštjan Markoli, Barbara Šetina Batič, Martin Šala, Sandra Drev, Živa Marinko, Miran Čeh, Belisa Alcantara Marinho; Opis vira z dne 14. 5. 2024;
Publication date in DiRROS:20.12.2024
Views:30
Downloads:12
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Record is a part of a journal

Title:Journal of materials science
Shortened title:J. Mater. Sci.
Publisher:Kluwer
ISSN:1573-4803
COBISS.SI-ID:513194009 New window

Document is financed by a project

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:P2-0084
Name:Nanostrukturni materiali

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:PR-11484

Funder:EC - European Commission
Funding programme:HE
Project number:101090289
Name:Development of new high-entropy oxide catalysts by the anodic oxidation of high-entropy alloys
Acronym:HEO4CAT

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:13.05.2024
Applies to:Text and Data Mining valid from 2024-05-13 Version of Record valid from 2024-05-13

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