Investigation of Li+ insertion in columbite structured FeNb2O6 and rutile structured CrNb2O6 materials

Pushpaka B. Samarasingha, Chris I. Thomas*, Helmer Fjellvåg

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Abstract

Lithium insertion in FeNb2O6 and CrNb2O6 has been investigated using the galvanostatic charge-discharge method and showed that more than half of the intercalated Li+ during first cycle is retained in the structure and is not de-intercalated during subsequent cycles. The effects of sintering on FeNb2O6 were investigated with lower applied temperatures yielding higher Li+ intercalation capability. Post galvanostatic XRD shows that the initial phase has been retained during cell cycling. Cyclic voltammetry reveals that chromium also takes part in electro-chemical activity in CrNb2O6.

Original languageEnglish
Pages (from-to)232-237
Number of pages6
JournalElectrochimica Acta
Volume153
DOIs
Publication statusPublished - 20 Jan 2015
MoE publication typeA1 Journal article-refereed

Keywords

  • Batteries
  • cathode
  • columbite
  • intercalation
  • lithium
  • niobates

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