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@INPROCEEDINGS{Tokariev:155754,
      author       = {Tokariev, O. and Berger, Cornelius and Orzessek, P. and
                      Fang, Q. and Menzler, N. H. and Buchkremer, H. P.},
      title        = {{STUDY} {OF} {STORAGE} {MATERIAL} {FOR} {A}
                      {HIGH}-{TEMPERATURE} {RECHARGEABLE} {OXIDE} {BATTERY}
                      ({ROB})},
      reportid     = {FZJ-2014-04761},
      year         = {2014},
      abstract     = {This work focuses on the fundamental research of porous
                      storage materials for a novel high temperature rechargeable
                      oxide battery (ROB). In the battery, a solid oxide cell
                      (SOC) runs alternately in fuel cell (discharge cycle) and
                      electrolyzer (charge cycle) modes. The hydrogen produced in
                      the electrolyzer mode makes the utilization of the battery
                      safer, by avoiding external hydrogen storage systems. The
                      stagnant atmosphere in the battery, consisting of H2 and H2O
                      vapor, is used as a reducing and oxidizing agent for a
                      metal-metal oxide material, which serves as the integrated
                      energy storage unit. The storage components have to meet
                      requirements such as; good kinetics of redox reactions, high
                      oxygen storage capacity, and high lifetime, in order to
                      assure a continuous ROB operation for at least 10,000
                      hours.Storage components are manufactured by type casting or
                      extrusion using iron oxide based slurries or pastes. Because
                      of long-term redox cycling at 800 °C, the structure of the
                      Fe/FeO storage material degrades, making the material
                      incapable of storing oxygen for continuous redox reactions.
                      Hence, to prevent storage degradation, the Fe/FeO matrix was
                      supplemented by “inert” (ZrO2, 8YSZ, Al2O3, MgAl2O4) as
                      well as reactive oxides (Mn2O3, CeO2, Cr2O3, TiO2, CuO,
                      Y2O3, SrO, SiO2, CaO, MgO) which are capable of promoting
                      and/or inhibiting ageing and the kinetics of redox
                      reactions.Thermogravimetric, XRD, and microstructural
                      analysis after redox cycling in the redox furnace (420 h)
                      show that the “inert” oxides hinder to some extent
                      structural degradation, whereas reactive mixed oxides are
                      fully capable of preventing sintering for several redox
                      cycles. The influence of the powder parameters on the
                      thermochemical processes in the ROB were also revealed as
                      significant characteristics.},
      month         = {Jun},
      date          = {2014-06-15},
      organization  = {6th Forum on New Materials,
                       Montecatini Terme (Italy), 15 Jun 2014
                       - 19 Jun 2014},
      subtyp        = {Other},
      cin          = {IEK-1 / IEK-3},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-3-20101013},
      pnm          = {123 - Fuel Cells (POF2-123) / SOFC - Solid Oxide Fuel Cell
                      (SOFC-20140602) / HITEC - Helmholtz Interdisciplinary
                      Doctoral Training in Energy and Climate Research (HITEC)
                      (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF2-123 / G:(DE-Juel1)SOFC-20140602 /
                      G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/155754},
}