A new iron oxyfluoride cathode active material for Li-ion battery, Fe2OF4

Irina D. Gocheva, Ichiro Tanaka, Takayuki Doi, Shigeto Okada, Jun ichi Yamaki

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The electrochemical properties of iron oxyfluoride of the Fe2OF4 type were investigated. The material exhibits a working potential at 3.0 V with a capacity of 200 mAh/g and cyclic reversibility in the range of 1.5-4.5 V. X-ray photoelectron spectroscopy (XPS) investigation of discharged material showed that iron was reduced to the divalent state. In this study, we report that Fe2OF4 material incorporates 1.4 Li per formula unit.

Original languageEnglish
Pages (from-to)1583-1585
Number of pages3
JournalElectrochemistry Communications
Issue number8
Publication statusPublished - Aug 1 2009


All Science Journal Classification (ASJC) codes

  • Electrochemistry

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