{
  "abstract": "The development of high-performance microbatteries for the Internet of Things (IoT) and smart devices applications requires anode materials that combine a high energy density with fast charge/discharge capabilities. In this study, we report on the synthesis of La–Nb–O thin film anode for Li-ion high-power microbatteries. The thin films were obtained by reactive co-sputtering, which is compatible with miniaturization and microelectronic processes. By adjusting the power applied to La and Nb targets, we controlled the La/Nb atomic ratio and selectively promoted the formation of La1/3NbO3, a vacancy-rich perovskite phase. X-Ray Diffraction (XRD), Raman spectroscopy, and Transmission Electron Microscopy (TEM) observations reveal the formation of a mixed-phase composed of an orthorhombic La1/3NbO3 matrix and LaNbO4 grains for La/Nb ratios slightly above 1/3, while pure LaNbO4 are formed for higher La/Nb ratios. Electrochemical tests demonstrated that LaNbO4 is electrochemically inactive while La1/3NbO3-containing thin films exhibit high areal and gravimetric capacities (up to 73 μAh cm−2 and 203 mAh g−1, respectively) and good rate capability and reversibility (10 μAh.cm−2 in 200 s charge or discharge). A description of Li+ insertion site and occupancy is given based on theoretical and experimental considerations, which suggests that 1.44 Li + could be inserted per La1/3NbO3 unit.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "name": "Oumar Touré"
    },
    {
      "name": "Maryline Le Granvalet"
    },
    {
      "name": "Romain Wernert"
    },
    {
      "name": "Maxime Bodet"
    },
    {
      "name": "Pierre-Emmanuel Petit"
    },
    {
      "name": "Marie-Paule Besland"
    },
    {
      "name": "Thierry Brousse"
    },
    {
      "name": "Jérémy Barbé"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0dnjqwzpkqp1s.bib",
  "cited_by": 0,
  "doi": "10.1016/j.jpowsour.2026.240136",
  "fulltext_url": null,
  "id": "0dnjqwzpkqp1s",
  "issns": [
    "0378-7753",
    "1873-2755"
  ],
  "landing_url": "https://hal.science/hal-05686015v2",
  "language": "en",
  "licence": "CC-BY-NC-4.0",
  "licence_label": "CC BY-NC 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "hal",
      "1.chim.mate"
    ],
    [
      "openalex",
      "2208|Advancements in Battery Materials"
    ]
  ],
  "openalex": "W7154824046",
  "pdf_url": "https://hal.science/hal-05686015/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-08",
  "publisher": "Elsevier",
  "ris": "https://research.draconitic.com/paper/0dnjqwzpkqp1s.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:51Z",
      "native_id": "hal-05686015",
      "source": "hal",
      "url": "https://hal.science/hal-05686015v2"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "hal:1.chim.mate",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Lanthanum niobate perovskite thin films for Li-ion microbatteries",
  "title_text": "Lanthanum niobate perovskite thin films for Li-ion microbatteries",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:51Z",
  "url": "https://research.draconitic.com/paper/0dnjqwzpkqp1s",
  "venue": "Journal of Power Sources",
  "versions": []
}