Reversible type solid oxide fuel cells using Ni-Fe-CeO2 based cermet fuel electrode and applied for metal-air rechargeable battery

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Abstract

Effects of mixed conducting oxide added for Ni-Fe were studied as fuel electrode of Solid Oxide Reversible Cells (SORC). For SOFC operation, power density is larger as the following order, Ce(Mn,Fe)O2<NiFe=La(Sr)Ga(Mg)O3<Ce0.8Sm0.2O2<La(Sr)Fe (Mn)O3. On the other hand, for electrolysis operation, the electrolysis current density is increased in the following order, Ce(Mn,Fe)O2<<NiFe<La(Sr)Ga(Mg)O3<< La(Sr)Fe(Mn)O3 <Ce0.8 Sm0.2O2. Therefore, for reversible operation, NiFe-Ce0.8Sm0.2O2 (SDC) seems to be the most active. Degradation of the cell using NiFe-SDC and Sm0.5Sr0.5CoO3 for fuel and air electrode, respectively, was studied at 1073 K, 100mA/cm2. The observed terminal potential was 1.13 and 1.025 V for SOEC and SOFC respectively at initial cycle and the observed potential slightly increased for SOFC and decreased for SOEC with increasing cycle number, however, after 50 cycles; the observed terminal potential was 1.15 and 1.0 V for SOFC and SOFC, respectively. Therefore, the degradation is hardly observed for the reversible operation of the cell. Combination of SORC with metal oxidation could open a new application area for fuel cell. In this study, application of SORC for reversible metal-air battery has been studied.

Original languageEnglish
Title of host publicationSolid Oxide Fuel Cells 14, SOFC 2015
EditorsS. C. Singhal, K. Eguchi
PublisherElectrochemical Society Inc.
Pages3279-3288
Number of pages10
Edition1
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - Jan 1 2015
Event14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage - Glasgow, United Kingdom
Duration: Jul 26 2015Jul 31 2015

Publication series

NameECS Transactions
Number1
Volume68
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Other

Other14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage
CountryUnited Kingdom
CityGlasgow
Period7/26/157/31/15

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Ishihara, T., Inoishi, A., Kim, H., & Ida, S. (2015). Reversible type solid oxide fuel cells using Ni-Fe-CeO2 based cermet fuel electrode and applied for metal-air rechargeable battery. In S. C. Singhal, & K. Eguchi (Eds.), Solid Oxide Fuel Cells 14, SOFC 2015 (1 ed., pp. 3279-3288). (ECS Transactions; Vol. 68, No. 1). Electrochemical Society Inc.. https://doi.org/10.1149/06801.3279ecst