Novel synthesis and electrochemical properties of perovskite-type NaFeF3 for a sodium-ion battery

Ayuko Kitajou, Hideyuki Komatsu, Kuniko Chihara, Irina D. Gocheva, Shigeto Okada, Jun Ichi Yamaki

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Highly crystallized perovskite-type NaFeF3 has been investigated as the cathode for sodium-ion batteries through the roll-quench method. In the charge-discharge measurement, the first discharge capacity was 197 mAh g ?1 at a rate of 0.076 mA cm?2 between 1.5 V and 4.5 V. Reversible Fe2+/Fe3+ redox reaction on cycle was confirmed by XPS. The ex situ XRD measurements for charged or discharged NaFeF 3 pellets revealed the reversible vibration on cycle, due to the structure strength and flexibility of the corner-sharing matrix. The peak intensities of (1 1 2) and (0 0 4) were changed with accompanying insertion/extraction of sodium, suggesting the extracted sodium has returned to the original 4c site on discharge.

Original languageEnglish
Pages (from-to)389-392
Number of pages4
JournalJournal of Power Sources
Volume198
DOIs
Publication statusPublished - Jan 15 2012

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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