Ruthenium oxide modified titanium dioxide nanotube arrays as carbon and binder free lithium-air battery cathode catalyst

Guangyu Zhao, Yanning Niu, Li Zhang, Kening Sun*

*Corresponding author for this work

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Abstract

RuO2 modified TiO2 nanotube arrays, growing on Ti foams, are used as carbon and binder free cathodes for Li-O2 batteries. The micrometer pores in Ti foams and nanometer pores in TiO 2 nanotubes supply facilitated transport channels for oxygen diffusing into/out of the catalysts in discharge and charge processes. The RuO2 catalyst exhibits outstanding catalytic active toward oxygen evolution reaction (OER), which leads the charge voltage maintaining around 3.7 V all through the battery cycling. The stability of TiO2/Ti support, abundant oxygen transport path and favorable catalytic activity of RuO 2 toward OER enable the Li-O2 batteries exhibiting 130 cycle discharge/charge.

Original languageEnglish
Pages (from-to)386-390
Number of pages5
JournalJournal of Power Sources
Volume270
DOIs
Publication statusPublished - 15 Dec 2014
Externally publishedYes

Keywords

  • Carbon and binder free
  • Cathode
  • Lithium-air battery
  • Ruthenium oxide catalyst
  • Titanium dioxide nanotube array

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Zhao, G., Niu, Y., Zhang, L., & Sun, K. (2014). Ruthenium oxide modified titanium dioxide nanotube arrays as carbon and binder free lithium-air battery cathode catalyst. Journal of Power Sources, 270, 386-390. https://doi.org/10.1016/j.jpowsour.2014.07.112