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Effect of the Secondary Rutile Phase in Single-Step Synthesized Carbon-Coated Anatase TiO$_{2}$ Nanoparticles as Lithium-Ion Anode Material

Birrozzi, Adele; Belchi, Raphaelle; Bouclé, Johann; Geiger, Dorin; Kaiser, Ute; Passerini, Stefano; Herlin-Boime, Nathalie; Bresser, Dominic

TiO$_{2}$ has been investigated as an alternative anode material candidate for lithium‐ion batteries for several years now due to its advantageous safety and rate capability in combination with its nontoxicity and abundance. Herein, the synthesis via laser pyrolysis is reported, which allows the single‐step, industrial‐scale realization of carbon‐coated TiO$_{2}$ nanoparticles. The modification of the synthesis parameters enables the variation of the rutile‐to‐anatase phase ratio. Following comprehensive physicochemical and electrochemical characterization, both the higher and lower rutile‐to‐anatase ratios show very stable cycling in lithium battery half cells, whereas the extended presence of the rutile phase limits the achievable specific capacity and lowers the apparent lithium‐ion diffusion coefficient, which leads to relatively lower capacities at elevated current densities.

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Verlagsausgabe §
DOI: 10.5445/IR/1000130529
Veröffentlicht am 19.03.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Helmholtz-Institut Ulm (HIU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2194-4288, 2194-4296
KITopen-ID: 1000130529
Erschienen in Energy Technology
Verlag Wiley-VCH Verlag
Seiten Art.-Nr.: 2001067
Schlagwörter anatase; laser pyrolysis; lithium-ion batteries; rutile; TiO$_{2}$
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