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Erforschung der Lithiumeinlagerung in zweiphasigem FeNbO₄
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ISBN10: 6208896436
ISBN13: 9786208896430
Publisher: Verlag Unser Wissen
Published: Jul 16 2025
Pages: 56
Weight: 0.19
Height: 0.13 Width: 6.00 Depth: 9.00
Language: German
ISBN13: 9786208896430
Publisher: Verlag Unser Wissen
Published: Jul 16 2025
Pages: 56
Weight: 0.19
Height: 0.13 Width: 6.00 Depth: 9.00
Language: German
Nanostrukturierte Materialien sind bei der Verwendung als Elektroden in Lithium-Ionen-Batterien wesentlich effektiver als Massenmaterialien. Dies liegt daran, dass sich die Lithiumionen aufgrund ihrer geringeren Grö e schneller und leichter bewegen können, was die Lade- und Entladeraten verbessert. Au erdem können sie besser mit den Belastungen umgehen, die durch das ein- und austretende Lithium verursacht werden. Wenn die Partikelgrö e auf nur wenige Nanometer reduziert wird, kann sich die Art und Weise, wie Lithium mit dem Material reagiert, erheblich ändern. So verhält sich beispielsweise FeNbO4 mit einer α-PbO2-Struktur je nach Teilchengrö e sehr unterschiedlich. In einer Studie wurde FeNbO4 sowohl in Nanometer- als auch in Mikrometergrö e durch Sol-Gel- (SG) und Festkörperreaktionsverfahren (SSR) hergestellt. Zwischen den beiden untersuchten Kristallstrukturen -α-PbO2 und Wolframit - zeigte die α-PbO2-Form eine bessere Kapazitätserhaltung.
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