{
  "abstract": "Fe-containing Ni oxyhydroxides are among the most active alkaline oxygen evolution catalysts, whose structures and performances strongly depend on precursor reconstruction and Fe location. However, achieving precise control over precursor design, reconstruction, and Fe incorporation remains highly challenging. Here, we report the low-temperature synthesis of intermetallic Ni2In3 nanoparticles as a precursor and uncover their in situ reconstruction behavior modulated by electrolyte concentration. Compared with similarly sized Ni nanoparticle-derived catalysts, the Ni2In3-derived catalysts exhibit significantly enhanced activity and stability. The optimal catalyst, after activation in 6 M KOH with Fe spiking, requires an overpotential of only 284 mV for 10 mA cm–2, along with a low Tafel slope of 31 mV dec–1. Combined electrochemical analyses, in situ/ex situ characterizations, and theoretical calculations reveal that In leaching induces electronic structure modulation and surface undercoordinated site enrichment, thereby facilitating interfacial Fe incorporation to form NiFe active centers. In an anion exchange membrane water electrolyzer, the catalyst demonstrates excellent stability of 260 h at 1 A cm–2 at 80 °C. These findings highlight the importance of electrolyte- and precursor-dependent reconstruction in modulating the electronic structure and promoting interfacial Fe incorporation, thereby enabling the design of oxygen evolution electrocatalysts.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Chemistry: Metalorganics and Inorganic Materials, Technische Universität Berlin, Straße Des 17. Juni 135, Sekr. C2, Berlin 10623, Germany",
    "Department of Materials Chemistry for Catalysis, Helmholtz−Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, Berlin 14109, Germany",
    "Department of Physics, Freie Universität Berlin, Arnimallee 14, Berlin 14195, Germany",
    "School of Materials Science and Engineering, North University of China, Xueyuan Road 3, Taiyuan 030051, China"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 9,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Xinzhang Lin"
    },
    {
      "affs": [
        1
      ],
      "name": "J. Niklas Hausmann",
      "orcid": "0000-0002-2336-3600"
    },
    {
      "affs": [
        1
      ],
      "name": "Na An"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Suptish Ghosh"
    },
    {
      "affs": [
        2
      ],
      "name": "Stefan Mebs"
    },
    {
      "affs": [
        3
      ],
      "name": "Zhe Xue",
      "orcid": "0009-0006-1580-6076"
    },
    {
      "affs": [
        2
      ],
      "name": "Holger Dau",
      "orcid": "0000-0001-6482-7494"
    },
    {
      "affs": [
        0
      ],
      "name": "Matthias Driess",
      "orcid": "0000-0002-9873-4103"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Prashanth W. Menezes",
      "orcid": "0000-0002-0665-7690"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2ghk4yyjhx8g8.bib",
  "cited_by": 0,
  "doi": "10.1021/acsnano.6c08336",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13718603/",
  "id": "2ghk4yyjhx8g8",
  "issns": [
    "1936-0851",
    "1936-086X"
  ],
  "landing_url": "https://doi.org/10.1021/acsnano.6c08336",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Article"
    ],
    [
      "openalex",
      "2105|Electrocatalysts for Energy Conversion"
    ]
  ],
  "openalex": "W7221559224",
  "pdf_url": null,
  "pmcid": "PMC13718603",
  "pmid": "42937562",
  "published": "2026-10-12",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2ghk4yyjhx8g8.ris",
  "sources": [
    {
      "first_seen": "2026-11-02T12:22:36Z",
      "native_id": "PMC13718603",
      "source": "pmc",
      "url": "https://doi.org/10.1021/acsnano.6c08336"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2105|Electrocatalysts for Energy Conversion",
      "subfield": "electrochemistry-energy"
    }
  ],
  "title": "Reconstruction of Oxygen Evolution Precatalysts: Effects of Leaching, Electrolyte Concentration and Iron Incorporation",
  "title_text": "Reconstruction of Oxygen Evolution Precatalysts: Effects of Leaching, Electrolyte Concentration and Iron Incorporation",
  "type": "peer-reviewed",
  "updated_at": "2026-11-02T12:22:36Z",
  "url": "https://research.draconitic.com/paper/2ghk4yyjhx8g8",
  "venue": "ACS Nano",
  "versions": []
}