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

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Pushpaka B. Samarasingha
  • Chris I. Thomas
  • Helmer Fjellvåg

Research units

  • University of Oslo

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.

Details

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

    Research areas

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

ID: 12776202