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High entropy layered double hydroxide supported by multiwall carbon nanotube for oxygen evolution reactions (OER).

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Title: High entropy layered double hydroxide supported by multiwall carbon nanotube for oxygen evolution reactions (OER).
Authors: Wondimu, Tadele Hunde1,2 (AUTHOR), Leung, Puiki1 (AUTHOR) p.leung@cqu.edu.cn, Zuo, Yong1,3 (AUTHOR) zuoyong@kpicn.cn, Shah, Akeel1 (AUTHOR), Liao, Qiang1 (AUTHOR)
Source: Journal of Power Sources. Jun2025, Vol. 640, pN.PAG-N.PAG. 1p.
Subjects: Oxygen evolution reactions, Layered double hydroxides, Overpotential, Entropy, Catalysts, Carbon nanotubes
Abstract: This study presents a novel catalyst that comprising of high entropy layered double hydroxide supported by multiwall carbon nanotube (FeAlNiCoMn-HE-LDH/CNT) which exhibits exceptional catalytic efficacy for the oxygen evolution reaction (OER) in a pH∼14, 1.0 M KOH solution. The synthesis of FeAlNiCoMn-HE-LDH/CNT involved a simple hydrothermal process by combining nitrate precursor solutions of Fe3+, Al3+, Ni2+, Co2+ and Mn2+ with piranha treated multiwall carbon nanotubes (O-MWCNT). The as synthesized FeAlNiCoMn-HE-LDH/CNT exhibited an overpotential of 243 mV to reach a current density of 10 mA cm−2, surpassing the performance of IrO 2 and exhibiting the lowest Tafel slope of 46.54 mV dec−1. Durability tests showed a negligible decrease in current density by ∼1.5 % after ∼250 h at 150 mA cm−2 and a slight increase by ∼2 % at 10 mA cm−2 over the same period and FeAlNiCoMn-HE-LDH/CNT found to be among the best catalyst of OER from the reported value. The exceptional performance and robustness of FeAlNiCoMn-HE-LDH/CNT for OER can be attributed to the synergistic effects between FeAlNiCoMn-HE-LDH and O-MCNT which enhancing the overall electrochemical activities of FeAlNiCoMn-HE-LDH/CNT. [Display omitted] • FeAlNiCoMn-HE-LDH/CNT was synthesized by simple hydrothermal method. • MWCNT was Oxidized by piranha solutions by stirring it for 5 h. • FeAlNiCoMn-HE-LDH/CNT was tested for OER and 243 mV at 10 mAcm−2 was attained. • FeAlNiCoMn-HE-LDH/CNT was stable in 1.0 M KOH for 250 h at 150 mAcm−2. • Synergistic effect of FeAlNiCoMn-HE-LDH and MWCNT enhances OER performance. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Power Sources is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 184266473
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PubType: Academic Journal
PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: High entropy layered double hydroxide supported by multiwall carbon nanotube for oxygen evolution reactions (OER).
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  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Wondimu%2C+Tadele+Hunde%22">Wondimu, Tadele Hunde</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Leung%2C+Puiki%22">Leung, Puiki</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> p.leung@cqu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zuo%2C+Yong%22">Zuo, Yong</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> zuoyong@kpicn.cn</i><br /><searchLink fieldCode="AR" term="%22Shah%2C+Akeel%22">Shah, Akeel</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liao%2C+Qiang%22">Liao, Qiang</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Power+Sources%22">Journal of Power Sources</searchLink>. Jun2025, Vol. 640, pN.PAG-N.PAG. 1p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Oxygen+evolution+reactions%22">Oxygen evolution reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Layered+double+hydroxides%22">Layered double hydroxides</searchLink><br /><searchLink fieldCode="DE" term="%22Overpotential%22">Overpotential</searchLink><br /><searchLink fieldCode="DE" term="%22Entropy%22">Entropy</searchLink><br /><searchLink fieldCode="DE" term="%22Catalysts%22">Catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+nanotubes%22">Carbon nanotubes</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study presents a novel catalyst that comprising of high entropy layered double hydroxide supported by multiwall carbon nanotube (FeAlNiCoMn-HE-LDH/CNT) which exhibits exceptional catalytic efficacy for the oxygen evolution reaction (OER) in a pH∼14, 1.0 M KOH solution. The synthesis of FeAlNiCoMn-HE-LDH/CNT involved a simple hydrothermal process by combining nitrate precursor solutions of Fe3+, Al3+, Ni2+, Co2+ and Mn2+ with piranha treated multiwall carbon nanotubes (O-MWCNT). The as synthesized FeAlNiCoMn-HE-LDH/CNT exhibited an overpotential of 243 mV to reach a current density of 10 mA cm−2, surpassing the performance of IrO 2 and exhibiting the lowest Tafel slope of 46.54 mV dec−1. Durability tests showed a negligible decrease in current density by ∼1.5 % after ∼250 h at 150 mA cm−2 and a slight increase by ∼2 % at 10 mA cm−2 over the same period and FeAlNiCoMn-HE-LDH/CNT found to be among the best catalyst of OER from the reported value. The exceptional performance and robustness of FeAlNiCoMn-HE-LDH/CNT for OER can be attributed to the synergistic effects between FeAlNiCoMn-HE-LDH and O-MCNT which enhancing the overall electrochemical activities of FeAlNiCoMn-HE-LDH/CNT. [Display omitted] • FeAlNiCoMn-HE-LDH/CNT was synthesized by simple hydrothermal method. • MWCNT was Oxidized by piranha solutions by stirring it for 5 h. • FeAlNiCoMn-HE-LDH/CNT was tested for OER and 243 mV at 10 mAcm−2 was attained. • FeAlNiCoMn-HE-LDH/CNT was stable in 1.0 M KOH for 250 h at 150 mAcm−2. • Synergistic effect of FeAlNiCoMn-HE-LDH and MWCNT enhances OER performance. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Power Sources is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.jpowsour.2025.236665
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Oxygen evolution reactions
        Type: general
      – SubjectFull: Layered double hydroxides
        Type: general
      – SubjectFull: Overpotential
        Type: general
      – SubjectFull: Entropy
        Type: general
      – SubjectFull: Catalysts
        Type: general
      – SubjectFull: Carbon nanotubes
        Type: general
    Titles:
      – TitleFull: High entropy layered double hydroxide supported by multiwall carbon nanotube for oxygen evolution reactions (OER).
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Wondimu, Tadele Hunde
      – PersonEntity:
          Name:
            NameFull: Leung, Puiki
      – PersonEntity:
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            NameFull: Zuo, Yong
      – PersonEntity:
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            NameFull: Shah, Akeel
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          Name:
            NameFull: Liao, Qiang
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          Dates:
            – D: 01
              M: 06
              Text: Jun2025
              Type: published
              Y: 2025
          Identifiers:
            – Type: issn-print
              Value: 03787753
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            – Type: volume
              Value: 640
          Titles:
            – TitleFull: Journal of Power Sources
              Type: main
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