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Introducing Highly Redox‐Active Atomic Centers into Insertion‐Type Electrodes for Lithium‐Ion Batteries

Ma, Yanjiao; Ma, Yuan; Giuli, Gabriele; Euchner, Holger; Groß, Axel; Lepore, Giovanni Orazio; d'Acapito, Francesco; Geiger, Dorin; Biskupek, Johannes; Kaiser, Ute; Schütz, Hanno M.; Carlsson, Anna; Diemant, Thomas; Behm, Rolf Jürgen; Kuenzel, Matthias; Passerini, Stefano; Bresser, Dominic

The development of alternative anode materials with higher volumetric and gravimetric capacity allowing for fast delithiation and, even more important, lithiation is crucial for next-generation lithium-ion batteries. Herein, the development of a completely new active material is reported, which follows an insertion-type lithiation mechanism, metal-doped CeO$_{2}$. Remarkably, the introduction of carefully selected dopants, herein exemplified for iron, results in an increase of the achievable capacity by more than 200%, originating from the reduction of the dopant to the metallic state and additional space for the lithium ion insertion due to a significant off-centering of the dopant atoms in the crystal structure, away from the original Ce site. In addition to the outstanding performance of such materials in high-power lithium-ion full-cells, the selective reduction of the iron dopant under preservation of the crystal structure of the host material is expected to open up a new field of research.

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Verlagsausgabe §
DOI: 10.5445/IR/1000120165
Veröffentlicht am 13.06.2020
DOI: 10.1002/aenm.202000783
Zitationen: 12
Web of Science
Zitationen: 10
Zitationen: 13
Cover der Publikation
Zugehörige Institution(en) am KIT Helmholtz-Institut Ulm (HIU)
Institut für Nanotechnologie (INT)
Young Investigator Network (YIN)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 1614-6832, 1614-6840
KITopen-ID: 1000120165
HGF-Programm 37.01.01 (POF III, LK 01) Fundamentals and Materials
Erschienen in Advanced energy materials
Verlag Wiley-VCH Verlag
Seiten 2000783
Vorab online veröffentlicht am 18.05.2020
Nachgewiesen in Dimensions
Web of Science
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