High electrochemical performances of microsphere C-TiO2 anode for sodium-ion battery

Seung Min Oh, Jang Yeon Hwang, C. S. Yoon, Jun Lu, Khalil Amine, Illias Belharouak, Yang Kook Sun

Research output: Contribution to journalArticle

169 Citations (Scopus)

Abstract

High-power, long-life carbon-coated TiO2 microsphere electrodes were synthesized by a hydrothermal method for sodium ion batteries, and the electrochemical properties were evaluated as a function of carbon content. The carbon coating, introduced by sucrose addition, had an effect of suppressing the growth of the TiO2 primary crystallites during calcination. The carbon coated TiO2 (sucrose 20 wt % coated) electrode exhibited excellent cycle retention during 50 cycles (100%) and superior rate capability up to a 30 C rate at room temperature. This cell delivered a high discharge capacity of 155 mAh gcomposite-1 at 0.1 C, 149 mAh g composite-1 at 1 C, and 82.7 mAh g composite-1 at a 10 C rate, respectively.

Original languageEnglish
Pages (from-to)11295-11301
Number of pages7
JournalACS Applied Materials and Interfaces
Volume6
Issue number14
DOIs
Publication statusPublished - 23 Jul 2014

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Keywords

  • Na battery
  • anode
  • carbon coating
  • hydrothermal method

ASJC Scopus subject areas

  • Materials Science(all)

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