{
  "abstract": "Air-induced degradation of O3-type sodium layered oxide cathodes compromises their structural integrity and electrochemical performance, presenting a major obstacle to practical handling and deployment. Here, we develop an H3BO3-assisted thermal restoration strategy for air-degraded O3-NaNi1/3Fe1/3Mn1/3O2. Thermal annealing restores bulk lattice ordering, whereas H3BO3 converts surface alkaline residues into B2O3-rich surface layer that limits Na loss and forms a protective surface layer. Experimental characterization and density functional theory calculations further suggest that a fraction of B occupies Na–O interstitial environments, modulating local coordination and strengthening TM–O orbital hybridization to facilitate Na+ transport and stabilize the layered framework. During cycling, the restored surface is associated with the formation of a thinner and more uniform cathode–electrolyte interphase. Upon renewed air exposure, the B2O3-rich surface layer reversibly hydrates to H3BO3, which preferentially interacts with H2O through hydrogen bonding and serves as a dynamic moisture buffer. Consequently, R-NFM@5%B delivers 133 mA h g–1 at 0.1 C, corresponding to 108% of the pristine NFM capacity, and retains 88% of its capacity after 400 cycles at 1 C. Even after 30 days of air exposure, it retains 87% of its capacity after 200 cycles at 1 C. This work demonstrates that chemically assisted thermal restoration can recover degraded layered oxide cathodes while imparting resistance to subsequent environmental degradation.",
  "abstract_shown": true,
  "affiliations": [
    "Sichuan University , , , ,",
    "Gansu Natural Energy Research Institute , ,",
    "Suzhou University of Science and Technology , , ,"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Yong Ye"
    },
    {
      "affs": [
        1
      ],
      "name": "Zongbin Luo"
    },
    {
      "affs": [
        0
      ],
      "name": "Chunlong Dai",
      "orcid": "0000-0002-8860-8031"
    },
    {
      "affs": [
        2
      ],
      "name": "Tao Hu",
      "orcid": "0000-0002-3717-6427"
    },
    {
      "affs": [
        0
      ],
      "name": "Zifeng Lin",
      "orcid": "0000-0002-9292-9559"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/a7g4nkbmy22a3.bib",
  "cited_by": 0,
  "doi": "10.1021/jacsau.6c01417",
  "fulltext_url": null,
  "id": "a7g4nkbmy22a3",
  "issns": [
    "2691-3704"
  ],
  "landing_url": "https://pubs.acs.org/jaaucr/article/doi/10.1021/jacsau.6c01417/5458716/Boric-Acid-Assisted-Thermal-Restoration-of-an-Air",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2208|Advancements in Battery Materials"
    ]
  ],
  "openalex": "W7223781256",
  "pdf_url": "https://pubs.acs.org/doi/pdf/10.1021/jacsau.6c01417",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-27",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/a7g4nkbmy22a3.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:36Z",
      "native_id": "10.1021/jacsau.6c01417",
      "source": "crossref",
      "url": "https://pubs.acs.org/jaaucr/article/doi/10.1021/jacsau.6c01417/5458716/Boric-Acid-Assisted-Thermal-Restoration-of-an-Air"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "issn:2691-3704",
      "subfield": "general"
    }
  ],
  "title": "Boric Acid-Assisted Thermal Restoration of an Air-Degraded O3-Type Sodium Layered Oxide Cathode",
  "title_text": "Boric Acid-Assisted Thermal Restoration of an Air-Degraded O3-Type Sodium Layered Oxide Cathode",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:36Z",
  "url": "https://research.draconitic.com/paper/a7g4nkbmy22a3",
  "venue": "JACS Au",
  "versions": []
}