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Development and Performance of MnFeCrO 4 ‐Based Electrodes for Solid Oxide Fuel Cells
Author(s) -
Stefan Elena,
Tsekouras George,
Irvine John T.S.
Publication year - 2013
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201300361
Subject(s) - materials science , spinel , yttria stabilized zirconia , electrode , ceramic , solid oxide fuel cell , cubic zirconia , electrolyte , oxide , chemical engineering , porosity , fuel cells , metallurgy , composite material , chemistry , engineering
Important advances have been made in SOFC development utilizing a ceramic framework based upon yttria zirconia (YSZ) electrolytes supported upon porous YSZ electrode skeletons. This ceramic framework is sintered at high temperatures with subsequent impregnation and low temperature processing of the active electrode materials. Here we seek to develop this impregnated electrode concept by investigating a novel scaffold material similar to the main corrosion product of ferritic stainless steel. The chromium rich spinel (MnFeCrO 4 ) was used as an electrode support material, either alone or impregnated with (La 0.75 Sr 0.25 ) 0.97 Cr 0.5 Mn 0.5 O 3‐δ , La 0.8 Sr 0.2 FeO 3‐δ , Ce 0.9 Gd 0.1 O 2‐δ , CeO 2 and/or Pd. In these initial studies it was found that all of the impregnated phases adhere very well to the spinel and considerably enhance performance and stability to a level sufficient for SOFC applications.