Ni-Fe-Ce(Mn,Fe)O2 cermet anode for rechargeable Fe-Air battery using LaGaO3 oxide ion conductor as electrolyte

Atsushi Inoishi, Shintaro Ida, Shouichi Uratani, Takayuki Okano, Tatsumi Ishihara

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

There is a strong demand for the development of a large capacity rechargeable battery in various fields. Recently, we proposed the combination of solid oxide fuel cell technology with Fe-air battery concepts using H 2/H2O as a redox mediator and a LaGaO3-based oxide as an electrolyte. Because large internal resistance and large degradation during charge and discharge cycles were observed on the anode, there is a strong demand for improvements in discharge potential and cycle stability. This study investigates the use of a cermet anode consisting of a Ni-Fe alloy combined with an oxide ion conductor. It was observed that by using a cermet anode of Ni-Fe combined with Ce0.6Mn0.3Fe 0.1O2 (CMF), the observed capacity of the cell was improved to 1163 mAh g-1 Fe-1 at 10 mA cm-2 and 873 K. This is about 97% of the theoretical capacity by assuming the formation of Fe3O4 (1200 mAh g-1 Fe-1). Cycle stability of the cell was also considerably improved with the use of a Ni-Fe-CMF anode compared to a Ni-Fe anode because of the suppressed aggregation provided by the mixing of Ni with CMF.

Original languageEnglish
Pages (from-to)3024-3030
Number of pages7
JournalRSC Advances
Volume3
Issue number9
DOIs
Publication statusPublished - Mar 5 2013

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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