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  • Ulusoy, SedaUppsala universitet,Fasta tillståndets fysik (author)

Elucidating the Lithiation Process in Fe3−δO4 Nanoparticles by Correlating Magnetic and Structural Properties

  • Article/chapterEnglish2024

Publisher, publication year, extent ...

  • American Chemical Society (ACS),2024
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-526226
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-526226URI
  • https://doi.org/10.1021/acsami.3c18334DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-227953URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Due to their high potential energy storage, magnetite (Fe3O4) nanoparticles have become appealing as anode materials in lithium-ion batteries. However, the details of the lithiation process are still not completely understood. Here, we investigate chemical lithiation in 70 nm cubic-shaped magnetite nanoparticles with varying degrees of lithiation, x = 0, 0.5, 1, and 1.5. The induced changes in the structural and magnetic properties were investigated using X-ray techniques along with electron microscopy and magnetic measurements. The results indicate that a structural transformation from spinel to rock salt phase occurs above a critical limit for the lithium concentration (xc), which is determined to be between 0.5< xc ≤ 1 for Fe3−δO4. Diffraction and magnetization measurements clearly show the formation of the antiferromagnetic LiFeO2 phase. Upon lithiation, magnetization measurements reveal an exchange bias in the hysteresis loops with an asymmetry, which can be attributed to the formation of mosaic-like LiFeO2 subdomains. The combined characterization techniques enabled us to unambiguously identify the phases and their distributions involved in the lithiation process. Correlating magnetic and structural properties opens the path to increasing the understanding of the processes involved in a variety of nonmagnetic applications of magnetic materials.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Feygenson, MikhailUppsala universitet,Fasta tillståndets fysik,European Spallation Source ERIC, SE-22100 Lund, Sweden;Jülich Centre for Neutron Science (JCNS-1) Forschungszentrum Jülich, D-52425 Jülich, Germany(Swepub:uu)mikfe338 (author)
  • Thersleff, Thomas,1980-Stockholms universitet,Institutionen för material- och miljökemi (MMK)(Swepub:su)tther (author)
  • Uusimaki, ToniStockholms universitet,Institutionen för material- och miljökemi (MMK)(Swepub:su)touu9536 (author)
  • Valvo, MarioUppsala universitet,Strukturkemi(Swepub:uu)marva692 (author)
  • Roca, Alejandro G.Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra 08193, Barcelona, Spain (author)
  • Nogués, JosepCatalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra 08193, Barcelona, Spain;ICREA, Pg. Lluís Companys 23, Barcelona 08010, Spain (author)
  • Svedlindh, PeterUppsala universitet,Fasta tillståndets fysik(Swepub:uu)petesved (author)
  • Salazar Alvarez, GermánUppsala universitet,Fasta tillståndets fysik(Swepub:uu)gersa763 (author)
  • Uppsala universitetFasta tillståndets fysik (creator_code:org_t)

Related titles

  • In:ACS Applied Materials and Interfaces: American Chemical Society (ACS)16:12, s. 14799-148081944-82441944-8252

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