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@ARTICLE{Fischer:1007151,
      author       = {Fischer, Liudmila and Ran, Ke and Schmidt, Christina and
                      Neuhaus, Kerstin and Baumann, Stefan and Behr, Patrick and
                      Mayer, Joachim and Bouwmeester, Henny J. M. and Nijmeijer,
                      Arian and Guillon, Olivier and Meulenberg, Wilhelm A.},
      title        = {{R}ole of {F}e/{C}o {R}atio in {D}ual {P}hase
                      {C}e0.8{G}d0.2{O}2−δ–{F}e3−x{C}ox{O}4 {C}omposites
                      for {O}xygen {S}eparation},
      journal      = {Membranes},
      volume       = {13},
      number       = {5},
      issn         = {2077-0375},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {FZJ-2023-01968},
      pages        = {482 -},
      year         = {2023},
      abstract     = {Dual-phase membranes are increasingly attracting attention
                      as a solution for developing stable oxygen permeation
                      membranes. Ce0.8Gd0.2O2−δ–Fe3−xCoxO4
                      (CGO-F(3−x)CxO) composites are one group of promising
                      candidates. This study aims to understand the effect of the
                      Fe/Co-ratio, i.e., x = 0, 1, 2, and 3 in Fe3−xCoxO4, on
                      microstructure evolution and performance of the composite.
                      The samples were prepared using the solid-state reactive
                      sintering method (SSRS) to induce phase interactions, which
                      determines the final composite microstructure. The Fe/Co
                      ratio in the spinel structure was found to be a crucial
                      factor in determining phase evolution, microstructure, and
                      permeation of the material. Microstructure analysis showed
                      that all iron-free composites had a dual-phase structure
                      after sintering. In contrast, iron-containing composites
                      formed additional phases with a spinel or garnet structure
                      which likely contributed to electronic conductivity. The
                      presence of both cations resulted in better performance than
                      that of pure iron or cobalt oxides. This demonstrated that
                      both types of cations were necessary to form a composite
                      structure, which then allowed sufficient percolation of
                      robust electronic and ionic conducting pathways. The maximum
                      oxygen flux is jO2 = 0.16 and 0.11 mL/cm2·s at 1000 °C and
                      850 °C, respectively, of the 85CGO-FC2O composite, which is
                      comparable oxygen permeation flux reported previously.},
      cin          = {IEK-1 / ER-C-2 / IEK-12},
      ddc          = {570},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)ER-C-2-20170209 /
                      I:(DE-Juel1)IEK-12-20141217},
      pnm          = {1232 - Power-based Fuels and Chemicals (POF4-123) / 1221 -
                      Fundamentals and Materials (POF4-122) / 5353 - Understanding
                      the Structural and Functional Behavior of Solid State
                      Systems (POF4-535) / DFG project 387282673 - Die Rolle von
                      Grenzflächen in mehrphasigen Ceroxid-basierten Membranen
                      für den Einsatz in Membranreaktoren (387282673)},
      pid          = {G:(DE-HGF)POF4-1232 / G:(DE-HGF)POF4-1221 /
                      G:(DE-HGF)POF4-5353 / G:(GEPRIS)387282673},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {37233543},
      UT           = {WOS:000997997600001},
      doi          = {10.3390/membranes13050482},
      url          = {https://juser.fz-juelich.de/record/1007151},
}