Anatase TiO2 nanoparticles for high power sodium-ion anodes

Wu L., Buchholz D., Bresser D., Gomes Chagas L., Passerini S.

Research article (journal) | Peer reviewed

Abstract

Sodium-ion batteries (SIBs) are considered to be a promising low-cost alternative to common lithium-ion batteries. Herein, we present a detailed electrochemical characterization of anatase TiO2 nanoparticles as anode material for Na-ion batteries, highlighting the substantial influence of the electrolyte composition (salt and solvent) on the obtainable specific capacity, cycling stability, and particularly the coulombic efficiency. TiO 2-based electrodes cycled using a 1M solution of NaClO4 in a mixture of ethylene carbonate and propylene carbonate present excellent high rate capability, offering about 100 and 86 mAh g-1 at 5.5 and 11C, respectively, which is - to the best of our knowledge - the best high rate capability for all titanium-based sodium-ion anode materials reported so far. Setting the C rate to 5.5C (i.e., 1.85 A g-1), such electrodes can be cycled for more than 1000 cycles without significant capacity decay, confirming their outstanding durability at such high specific current. These results, in combination with its environmental friendliness and cost efficiency, render anatase TiO2 nanoparticles a promising anode material for high power sodium-ion batteries. © 2013 Elsevier B.V. All rights reserved.

Details about the publication

JournalJournal of Power Sources
Volume251
Issuenull
Page range379-385
StatusPublished
Release year2014
Language in which the publication is writtenEnglish
DOI10.1016/j.jpowsour.2013.11.083
Link to the full texthttp://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84890810431
KeywordsAnatase TiO2 nanoparticles; Anode; Electrolyte; High power; Sodium-ion battery

Authors from the University of Münster

Bresser, Dominic
Institute of Physical Chemistry
Buchholz, Daniel
Institute of Physical Chemistry