{
  "abstract": "The key technical challenge in developing high-performance micro-energy storage systems based on thin films that offer enhanced rate performance and cycling stability is to find low-energy, time-consuming methodologies for depositing thick, conformal films on complex 3D architectures. This work addresses this challenge by presenting a chemical solution deposition approach based on spin coating, which can deposit WO₃ thin films with a thickness ranging from 100 to 500 nm on high-aspect-ratio 3D silicon substrates. Combining an optimized 3D substrate with a high AEF and an optimized film thickness results in the electrodes exhibiting a 30-fold increase in capacity compared to 2D planar counterparts, in line with the area enlargement factor. Electrochemical evaluations demonstrate stable capacity of 320 µAh cm⁻², even when the potential is limited to prevent conversion reactions. Furthermore, a capacity of 82 µAh cm⁻² is retained at a high current density of 500 µA cm⁻². The improved rate capability is attributed to the expanded surface area of the 3D electrode, the reversible Li+ intercalation mechanism and the nanoscale WO3 structure, which minimize Li ion paths.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "name": "N. Poirot"
    },
    {
      "name": "M. Gabard"
    },
    {
      "name": "R. Omnée"
    },
    {
      "name": "M. Zaghrioui"
    },
    {
      "name": "V. Grimal"
    },
    {
      "name": "M. Dutour"
    },
    {
      "name": "E. Raymundo-Piñero"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6jxt00mp3wbq4.bib",
  "cited_by": 0,
  "doi": "10.1016/j.jpowsour.2026.241592",
  "fulltext_url": null,
  "id": "6jxt00mp3wbq4",
  "issns": [
    "0378-7753",
    "1873-2755"
  ],
  "landing_url": "https://hal.science/hal-05796788v1",
  "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"
    ],
    [
      "openalex",
      "2504|Supercapacitor Materials and Fabrication"
    ]
  ],
  "openalex": "W7214596404",
  "pdf_url": "https://hal.science/hal-05796788/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-28",
  "publisher": "Elsevier",
  "ris": "https://research.draconitic.com/paper/6jxt00mp3wbq4.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:55Z",
      "native_id": "hal-05796788",
      "source": "hal",
      "url": "https://hal.science/hal-05796788v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2504|Supercapacitor Materials and Fabrication",
      "subfield": "materials-polymers"
    }
  ],
  "title": "3D WO3 nanostructuration for high power energy storage micro-devices",
  "title_text": "3D WO3 nanostructuration for high power energy storage micro-devices",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:55Z",
  "url": "https://research.draconitic.com/paper/6jxt00mp3wbq4",
  "venue": "Journal of Power Sources",
  "versions": []
}