Mar 20 – 23, 2023
Campus Garching
Europe/Berlin timezone

Nanoscale magnetization in lithiated iron oxide nanoparticles

Mar 20, 2023, 4:00 PM
Yards 4 - 6 (Fakultät für Maschinenwesen)

Yards 4 - 6

Fakultät für Maschinenwesen

Board: MO-205
Poster Magnetism, Superconductivity, Topological Systems, Magnetic Thin Films an other electronic phenomena Poster Session MONDAY


Leonhard Rochels (Universität zu Köln)


The search for renewable and sustainable electrical energy storage devices has become vital to meet current environmental challenges [1]. Iron oxides represent a promising,environmentally friendly material [2,3] which can be converted into a lithium intercalating material via chemical lithiation [4]. Owing to their high surface area and thus potential high electrochemical surface activity, nanostructured iron oxides are ideally suitable for use as electrode materials. A continuous lithiation process starting at the materials surface is expected to proceed through different phases. A detailed understanding of the
lithiation progress is therefore crucial for the optimization of chemical lithiation processing.

In this contribution, we apply magnetic small-angle neutron scattering to gain detailed insight into the lithiation progress from the particle surface to the core. We observe the formation of a core-shell nanoparticle morphology, which we attribute to a lithiated shell
that grows in thickness upon lithiation. By correlating chemical and magnetic nanoparticle morphologies, we aim to link the magnetic properties with the degree of lithiation.

[1] D. Larcher, J.-M. Tarascon, Nat. Chem. 7, 19-29 (2015).
[2] L. Zhang, H. B. Wu, X. Wen, Adv. Energy Mater. 4, 1300958 (2014).
[3] M. Valvo, A. Liivat, H. Eriksson et al, ChemSusChem 10, 2431-2448 (2017).
[4] P. G. Bruce et al. Angew. Chem. Int. Ed. 47, 2930-2946 (2008).

Primary author

Leonhard Rochels (Universität zu Köln)


Prof. Germán Salazar Alvarez (Uppsala University) Sabrina Disch (Universität zu Köln)

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