Communication - O3-type layered oxide with a quaternary transition metal composition for na-ion battery cathodes: NaTi0.25Fe0.25Co0.25Ni0.25O2

Plousia Vassilaras, Stephen T. Dacek, Haegyeom Kim, Timothy T. Fister, Soojeong Kim, Gerbrand Ceder, Jae Chul Kim

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

NaTi0.25Fe0.25Co0.25Ni0.25O2 is explored as a cathode material for Na-ion batteries. Synthesized by a solid-state reaction, the compound is phase-pure with the O3-type layered structure and consists of Ti4+, Fe3+, Co3+, and Ni2+ according to X-ray absorption spectroscopy. The cathode delivers 163 mAh/g and 504 Wh/kg at C/20 in the first discharge with 89% capacity retention after 20 cycles and demonstrates superior rate capability with micron sized particles, in which discharge capacity at 30 C is 80mAh/g. Our results indicate that the Ti-containing quaternary material can be a potential cathode composition for Na-ion batteries.

Original languageEnglish
Pages (from-to)A3484-A3486
JournalJournal of the Electrochemical Society
Volume164
Issue number14
DOIs
StatePublished - 2017

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