{
  "abstract": "Interfacial resistance remains a key challenge in developing high-performance and durable protonic ceramic electrochemical cells (PCECs), especially at low temperatures. Here, we present a systematic interface engineering strategy that quantitatively correlates interfacial contact coverage with electrochemical performance. A thin and dense PrBa0.5Sr0.5Co1.5Fe0.5O5+δ interlayer is fabricated via low-cost and scalable precursor-based electrostatic spray deposition on a BaZr0.4Ce0.4Y0.1Yb0.1O3-δ electrolyte, achieving a nearly complete contact coverage of 92.6 ± 0.6%. Equivalent circuit-based impedance modeling confirms that the improved contact coverage reduced both the interfacial ohmic and polarization resistances. The interface-engineered PCEC achieves a peak power density of 1.01 W/cm² in fuel cell mode and a current density of 1.15 A/cm² at 1.3 V in electrolysis mode at 500 °C. It also demonstrates improved interfacial mechanical integrity, preventing delamination under harsh thermal cycling, long-term operational stability, and fuel flexibility with direct ammonia and methane.",
  "abstract_shown": true,
  "affiliations": [
    "School of Mechanical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea.",
    "Advanced Defense Science and Technology Research Institute, Agency for Defense Development, Daejeon, Republic of Korea.",
    "Department of Smart Fab. Technology, Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea.",
    "SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea.",
    "School of Mechanical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea. leewy@skku.edu.",
    "SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea. leewy@skku.edu.",
    "SKKU National Lab for Intelligent Energy Solution Technology (SIEST), Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea. leewy@skku.edu."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 12,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Hyun Sik Yoo"
    },
    {
      "affs": [
        1
      ],
      "name": "Jongseo Lee"
    },
    {
      "affs": [
        0
      ],
      "name": "Soyeon Kim"
    },
    {
      "affs": [
        0
      ],
      "name": "Joon Gyu Kim"
    },
    {
      "affs": [
        0
      ],
      "name": "Sehee Bang",
      "orcid": "0000-0002-1502-6356"
    },
    {
      "affs": [
        0
      ],
      "name": "Yuhan Jung"
    },
    {
      "affs": [
        0
      ],
      "name": "Donguk Kim"
    },
    {
      "affs": [
        0
      ],
      "name": "Yue Wen"
    },
    {
      "affs": [
        0
      ],
      "name": "Min Hyung Bae"
    },
    {
      "affs": [
        0
      ],
      "name": "Bong Hyun Seo"
    },
    {
      "affs": [
        0,
        2,
        3
      ],
      "name": "Ji Won Suk"
    },
    {
      "affs": [
        4,
        5,
        6
      ],
      "name": "Wonyoung Lee",
      "orcid": "0000-0002-1349-4017"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/03agm07qjkrgn.bib",
  "cited_by": 0,
  "doi": "10.1038/s41467-026-77561-6",
  "fulltext_url": "https://europepmc.org/articles/PMC13680501",
  "id": "03agm07qjkrgn",
  "issns": [
    "2041-1723"
  ],
  "landing_url": "https://europepmc.org/article/MED/42897142",
  "language": "eng",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2505|Advancements in Solid Oxide Fuel Cells"
    ]
  ],
  "openalex": "W7213440663",
  "pdf_url": "https://europepmc.org/articles/PMC13680501?pdf=render",
  "pmcid": "PMC13680501",
  "pmid": "42897142",
  "published": "2026-09-17",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/03agm07qjkrgn.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:41Z",
      "native_id": "MED:42897142",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42897142"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|Advancements in Solid Oxide Fuel Cells",
      "subfield": "electrochemistry-energy"
    }
  ],
  "title": "Interface-driven boost in the performance and stability of protonic ceramic electrochemical cells.",
  "title_text": "Interface-driven boost in the performance and stability of protonic ceramic electrochemical cells.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:19:41Z",
  "url": "https://research.draconitic.com/paper/03agm07qjkrgn",
  "venue": "Nature communications",
  "versions": []
}