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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
10/12/2025 |
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Data da última atualização: |
10/12/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MEDINA, M.; SILVA, A. B. DA; XIA, L.; JIANG, W.; GLÜSEN, A.; OLIVEIRA, C. R. de; MASCARO, L. H. |
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Afiliação: |
MARINA MEDINA, UNIVERSIDADE FEDERAL DE SÃO CARLOS; ANELISSE BRUNCA DA SILVA, UNIVERSIDADE FEDERAL DE SÃO CARLOS; LU XIA, INSTITUTE OF ENERGY TECHNOLOGIES, ELECTROCHEMICAL PROCESS ENGINEERING; WULYU JIANG, INSTITUTE OF ENERGY TECHNOLOGIES, ELECTROCHEMICAL PROCESS ENGINEERING; ANDREAS GLÜSEN, INSTITUTE OF ENERGY TECHNOLOGIES, ELECTROCHEMICAL PROCESS ENGINEERING; CAUE RIBEIRO DE OLIVEIRA, CNPDIA; LUCIA HELENA MASCARO, UNIVERSIDADE FEDERAL DE SÃO CARLOS. |
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Título: |
Tailoring NiFeS microstructure through electrodeposition for high-performance anion exchange membrane water electrolysis. |
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Ano de publicação: |
2025 |
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Fonte/Imprenta: |
Journal of Power Sources, v. 657, 238128, 2025. |
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ISSN: |
0378-7753 |
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DOI: |
https://doi.org/10.1016/j.jpowsour.2025.238128 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Sustainable hydrogen production from anion exchange membrane (AEM) water electrolysis is an economically efficient alternative to proton exchange membrane (PEM) technology. However, conventional ionomer-based spray-coated electrodes suffer from poor conductivity and low utilization of active sites. These are primarily due to the agglomeration of ionomers with the catalyst, leading to uneven dispersion and significant catalyst active surface area blockage. A self-supported, ionomer-free NiFeS OER catalyst, synthesized via direct electrodeposition on a nickel fiber porous transport layer, is introduced here to address these limitations. The optimized NiFeS catalyst required only 300 mV as overpotential to accomplish 100 mA cm− 2 , exhibiting superior charge transfer kinetics, as evidenced by a low Tafel slope of 84 mV dec− 1 . The catalyst also had a significantly larger electrochemically active surface area (ECSA) than its monometallic counterparts. NiFeS-based electrolyzer in a practical AEMWE setup achieved an outstanding current density of 2.6 A cm− 2 at 2.0 V, showing minimal. |
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Palavras-Chave: |
Alkaline water electrolysis; Electrodeposition; Fe-effect; Ionomer-free; NiFeS; Self-supported electrode. |
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Thesaurus Nal: |
Hydrogen production. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02026naa a2200301 a 4500
001 2182596
005 2025-12-10
008 2025 bl uuuu u00u1 u #d
022 $a0378-7753
024 7 $ahttps://doi.org/10.1016/j.jpowsour.2025.238128$2DOI
100 1 $aMEDINA, M.
245 $aTailoring NiFeS microstructure through electrodeposition for high-performance anion exchange membrane water electrolysis.$h[electronic resource]
260 $c2025
520 $aAbstract: Sustainable hydrogen production from anion exchange membrane (AEM) water electrolysis is an economically efficient alternative to proton exchange membrane (PEM) technology. However, conventional ionomer-based spray-coated electrodes suffer from poor conductivity and low utilization of active sites. These are primarily due to the agglomeration of ionomers with the catalyst, leading to uneven dispersion and significant catalyst active surface area blockage. A self-supported, ionomer-free NiFeS OER catalyst, synthesized via direct electrodeposition on a nickel fiber porous transport layer, is introduced here to address these limitations. The optimized NiFeS catalyst required only 300 mV as overpotential to accomplish 100 mA cm− 2 , exhibiting superior charge transfer kinetics, as evidenced by a low Tafel slope of 84 mV dec− 1 . The catalyst also had a significantly larger electrochemically active surface area (ECSA) than its monometallic counterparts. NiFeS-based electrolyzer in a practical AEMWE setup achieved an outstanding current density of 2.6 A cm− 2 at 2.0 V, showing minimal.
650 $aHydrogen production
653 $aAlkaline water electrolysis
653 $aElectrodeposition
653 $aFe-effect
653 $aIonomer-free
653 $aNiFeS
653 $aSelf-supported electrode
700 1 $aSILVA, A. B. DA
700 1 $aXIA, L.
700 1 $aJIANG, W.
700 1 $aGLÜSEN, A.
700 1 $aOLIVEIRA, C. R. de
700 1 $aMASCARO, L. H.
773 $tJournal of Power Sources$gv. 657, 238128, 2025.
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