Titanium-substituted Na0.44MnO2 nanorods as cathode materials for high performance sodium-ion batteries

Pan Zhan, Kailong Jiao, Junxiang Wang, Zongqian Hu, Rui Ma, Hongmin Zhu, Shuqiang Jiao

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

A series of titanium-substituted manganese oxides, Na0.44TixMn1-xO2 (x = 0.11, 0.22, 0.33, and 0.44) with the Na0.44MnO2 were prepared by sol-gel methods. The electrochemical characteristics of these compounds, which are different from Na0.44MnO2, were examined in coin-type cells with NaPF6 electrolyte. While the Na0.44Ti0.11Mn0.89O2 and Na0.44Ti0.44Mn0.56O2 delivered lower capacities, the Na0.44Ti0.22Mn0.78O2 showed higher capacities, about 120 mAh g-1. The Ti-substituted materials exhibited excellent capacity retention over one hundred or more cycles, with 71.8% capacity retention over 450 cycles. Titanium substitution eliminates Mn dissolution.

Original languageEnglish
Pages (from-to)A2296-A2301
JournalJournal of the Electrochemical Society
Volume162
Issue number12
DOIs
Publication statusPublished - 2015 Jan 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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