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@INPROCEEDINGS{Tokariev:189479,
      author       = {Tokariev, O. and Berger, C. M. and Orzessek, P. and
                      Quadakkers, W. J. and Fang, Q. and Blum, L. and Menzler, N.
                      H. and Guillon, O.},
      title        = {{I}mplementation of developed storage material for first
                      prototypes of high-temperature rechargeable oxide batteries
                      ({ROB})},
      reportid     = {FZJ-2015-02639},
      year         = {2015},
      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) mode. The stagnant atmosphere in
                      the battery, consisting of H2 and H2O vapor, is used as
                      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) as well as reactive oxides (Al2O3,
                      CaO) 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
                      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.After all, as proof of concept
                      the first prototypes of high-temperature rechargeable planar
                      batteries were successfully operated with current densities
                      of 150 mA/cm2 and full cycle durations (charge-discharge) of
                      up to 100 minutes (200 cycles).},
      month         = {Mar},
      date          = {2015-03-15},
      organization  = {90th DKG Annual Conference $\&$
                       Symposium on High-Performance Ceramics
                       2015, Bayreuth (Germany), 15 Mar 2015 -
                       18 Mar 2015},
      subtyp        = {Plenary/Keynote},
      cin          = {IEK-1 / IEK-2 / IEK-3},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-2-20101013 /
                      I:(DE-Juel1)IEK-3-20101013},
      pnm          = {135 - Fuel Cells (POF3-135)},
      pid          = {G:(DE-HGF)POF3-135},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/189479},
}