Amorphous TiO2 Nanotube anode for rechargeable sodium ion batteries

Hui Xiong, Michael D. Slater, Mahalingam Balasubramanian, Christopher S. Johnson, Tijana Rajh

Research output: Contribution to journalArticlepeer-review

568 Scopus citations

Abstract

Sodium ion batteries are an attractive alternative to lithium ion batteries that alleviate problems with lithium availability and cost. Despite several studies of cathode materials for sodium ion batteries involving layered oxide materials, there are few low-voltage metal oxide anodes capable of operating sodium ion reversibly at room temperature. We have synthesized amorphous titanium dioxide nanotube (TiO2NT) electrodes directly grown on current collectors without binders and additives to use as an anode for sodium ion batteries. We find that only amorphous large diameter nanotubes (>80 nm I.D.) can support electrochemical cycling with sodium ions. These electrodes maximize their capacity in operando and reach reversible capacity of 150 mAh/g in 15 cycles. We also demonstrate for the first time a full cell all-oxide Na ion battery using TiO2NT anode coupled to a Na1.0Li 0.2Ni0.25Mn0.75Oδ cathode at room temperature exhibiting good rate capability.

Original languageEnglish (US)
Pages (from-to)2560-2565
Number of pages6
JournalJournal of Physical Chemistry Letters
Volume2
Issue number20
DOIs
StatePublished - Oct 20 2011
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Physical and Theoretical Chemistry

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