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Materials for SOFC technologies

Scientific network: Sustainable Energy Systems. Partners:Warsaw University of Technology (PW), Warszawa- Faculty of Physics (WF PW)- Faculty of Chemistry (WCh PW)Academy of Mining and Metallurgy (AGH), Krak?w- Faculty of Materials Science and Ceramics (WIMiC AGH)Technical University

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Materials for SOFC technologies

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    7. SOFC

    9. HT SOFC (~1000oC) electrolyte Zr(Y)O2 (YSZ) cathode La(Sr)MnO3 (LSM) anode Ni - YSZ interconector La(Sr)CrO3    IT SOFC (500 – 700oC) 1) Based on YSZ electrolyte: thin layer YSZ (eg.15µm?0.15 O cm2 at 700oC) 2) Based on alternative electrolyte materials: a) Ce(Gd)O2 – (CGO) (15 µm?0.15 O cm2 at 500oC) problems: reduction ( Ce4+?Ce3+ ) ? electronic conductivity matching (eg. anode Ni – CGO) b) La(Sr)Ga(Mg)O3 – (LSGM) problems: difficulties to get single phase c) Bi2O3 based oxide ion conductors problems: reduction at low pO2 atmosphere

    10. Bi - based oxide ion conductors

    11. Fluoryte type cubic structure

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