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Tailoring the Charge/Discharge Potentials and Electrochemical Performance of SnO₂ Lithium‐Ion Anodes by Transition Metal Co‐Doping

Birrozzi, Adele; Asenbauer, Jakob; Ashton, Thomas E.; Groves, Alexandra R.; Geiger, Dorin; Kaiser, Ute; Darr, Jawwad A.; Bresser, Dominic

Abstract:
It has been shown that the introduction of several transition metal (TM) dopants into SnO2 lithium‐ion battery anodes can overcome the issues associated with the irreversible capacity loss from the conversion reaction of SnO2 and the aggregation of the metallic Sn particles formed upon lithiation. As the choice of the single dopant, however, plays a decisive role for the achievable energy density – precisely its redox potential – we investigate herein TM co‐doped SnO2, prepared by using a readily scalable continuous hydrothermal flow synthesis (CHFS) process, to tailor the dis‐/charge profile and by this the energy density. It is shown that the judicious choice of different elemental doping combinations in samples made via CHFS simultaneously improves the cycling performance and the full‐cell energy density. To support these findings, we realized a lithium‐ion full‐cell incorporating the best performing co‐doped SnO2 as negative electrode and high‐voltage LiNi0.5Mn1.5O4 (LNMO) as positive electrode–to the best of our knowledge, the first full‐cell based on such anode material in combination with LNMO as cathode active material.

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Verlagsausgabe §
DOI: 10.5445/IR/1000118017
Veröffentlicht am 03.04.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Helmholtz-Institut Ulm (HIU)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 03.2020
Sprache Englisch
Identifikator ISSN: 2566-6223, 2566-6223
KITopen-ID: 1000118017
Erschienen in Batteries & supercaps
Band 3
Heft 3
Seiten 284–292
Vorab online veröffentlicht am 03.01.2020
Nachgewiesen in Web of Science
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