Li sub(4)Ti sub(5)O sub(12) modified with Ag nanoparticles as an advanced anode material in lithium-ion batteries

A three-step solid state synthesis was used to produce powders of spinel phase Li sub(4)Ti sub(5)O sub(12) with crystallite size in a few hundred nanometers range. This was followed by surface modification through the deposition of 2-10 nm Ag nanoparticles, as verified by scanning and transmission e...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of power sources 2014-01, Vol.245, p.764-771
Hauptverfasser: Krajewski, M, Michalska, M, Hamankiewicz, B, Ziolkowska, D, Korona, K P, Jasinski, J B, Kaminska, M, Lipinska, L, Czerwinski, A
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A three-step solid state synthesis was used to produce powders of spinel phase Li sub(4)Ti sub(5)O sub(12) with crystallite size in a few hundred nanometers range. This was followed by surface modification through the deposition of 2-10 nm Ag nanoparticles, as verified by scanning and transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and Raman spectroscopy. The electrochemical performance of these Li sub(4)Ti sub(5)O sub(12)/n-Ag composite powders was examined by chronopotentiometry in three-electrode Swagelok cells. These measurements showed excellent high-rate performance and remarkably good cydability of the fabricated powders. Specifically, capacity retention in excess of 86% after raising the discharge current from 1C to 10C and less than 6% of capacity loss after 50 charge/discharge cycles at 1C current rate were measured.
ISSN:0378-7753