{
  "abstract": "In AgNbO3 perovskite structure, electrochemical activation is speculated during the first lithiation cycle enabling the material to reversibly store Li+ by the contributions of both Ag and Nb cation. However, the origin of electrochemically induced structural activation and understanding of cations involvement in complex Li+ storage mechanism is still elusive. Herein, operando synchrotron X-ray absorption spectroscopy (XAS) was applied to clarify this mechanism under different cycling conditions. Ag K-edge XAS measurements during first lithiation revealed a gradual Ag+ to Ag0 reduction starting at a relatively high potential of 1.0 V vs Li+/Li, thus creating vacancies in the lattice for Li+ insertion and inducing a crystalline-to-amorphous structural transition. Below 0.3 V vs Li+/Li, metallic Ag forms multiple intermetallic Li-Ag alloys, resulting in lithium-rich Li9Ag at the end of lithiation. Simultaneously, Nb K-edge XAS measurements indicate an irreversible Nb5+ to Nb3+ reduction with formation of metastable phases during first lithiation. Upon extended cycling at high current densities, intermediate phases sustain reversible Li+ storage through Nb-redox activity and Li-Ag (de)alloying reactions, facilitating fast charging capability. This study will help in designing new conversion-alloying type negative electrodes for fast-charging batteries.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "name": "Abbas Khan"
    },
    {
      "name": "Camille Douard"
    },
    {
      "name": "Antonella Iadecola"
    },
    {
      "name": "Thierry Brousse"
    },
    {
      "name": "Olivier Crosnier"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ack8y4v4kreay.bib",
  "cited_by": 2,
  "doi": "10.1016/j.electacta.2025.147435",
  "fulltext_url": null,
  "id": "ack8y4v4kreay",
  "issns": [
    "0013-4686"
  ],
  "landing_url": "https://hal.science/hal-05340406v1",
  "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": [
    [
      "hal",
      "0.chim"
    ],
    [
      "hal",
      "1.chim.mate"
    ],
    [
      "openalex",
      "2208|Advancements in Battery Materials"
    ]
  ],
  "openalex": "W4415885372",
  "pdf_url": "https://hal.science/hal-05340406/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-07",
  "publisher": "Elsevier",
  "ris": "https://research.draconitic.com/paper/ack8y4v4kreay.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:50Z",
      "native_id": "hal-05340406",
      "source": "hal",
      "url": "https://hal.science/hal-05340406v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "hal:1.chim.mate",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Unveiling complex lithiation/delithiation mechanism in AgNbO3 model perovskite using operando X-ray absorption spectroscopy",
  "title_text": "Unveiling complex lithiation/delithiation mechanism in AgNbO3 model perovskite using operando X-ray absorption spectroscopy",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:50Z",
  "url": "https://research.draconitic.com/paper/ack8y4v4kreay",
  "venue": "Electrochimica Acta",
  "versions": []
}