Elucidating the Lithiation Process in Fe3−δO4 Nanoparticles by Correlating Magnetic and Structural Properties
Ulusoy, Seda (Uppsala University. Department Materials Science and Engineering)
Feygenson, Mikhail (Uppsala University. Department Materials Science and Engineering)
Thersleff, Thomas (Stockholm University. Department Materials and Environmental Chemistry)
Uusimaeki, Toni (Stockholm University. Department Materials and Environmental Chemistry)
Valvo, Mario (Uppsala University. Department Chemistry)
Gómez Roca, Alejandro (Institut Català de Nanociència i Nanotecnologia)
Nogués, Josep (Institut Català de Nanociència i Nanotecnologia)
Svedlindh, Peter (Uppsala University. Department Materials Science and Engineering)
Salazar-Alvarez, German (Uppsala University. Department Materials Science and Engineering)

Data:	2024
Resum:	Due to their high potential energy storage, magnetite (FeO) 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 (x), which is determined to be between 0. 5< x ≤ 1 for FeO. Diffraction and magnetization measurements clearly show the formation of the antiferromagnetic LiFeO 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 LiFeO 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.
Ajuts:	Agencia Estatal de Investigación PID2019-106229RB-I0 Agencia Estatal de Investigación RTI2018-095495-J-I00 Agencia Estatal de Investigación PID2022-138588OB-C32 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00651 Agencia Estatal de Investigación RYC2019-027449-I Agencia Estatal de Investigación CEX2021-001214-S
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Iron oxide ; Lithiation ; Structural transformation ; Diffraction ; Magnetism
Publicat a:	ACS applied materials & interfaces, Vol. 16, Issue 12 (March 2024) , p. 14799-14808, ISSN 1944-8252

DOI: 10.1021/acsami.3c18334
PMID: 38478774

10 p, 6.5 MB

El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Institut Català de Nanociència i Nanotecnologia (ICN2)
Articles > Articles de recerca
Articles > Articles publicats