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@ARTICLE{Vibhu:884210,
      author       = {Vibhu, Vaibhav and Vinke, I. C. and Eichel, R.-A. and de
                      Haart, L. G. J.},
      title        = {{C}obalt substituted {P}r2{N}i1-{C}o {O}4+ (x = 0, 0.1,
                      0.2) oxygen electrodes: {I}mpact on electrochemical
                      performance and durability of solid oxide electrolysis
                      cells},
      journal      = {Journal of power sources},
      volume       = {482},
      issn         = {0378-7753},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2020-03123},
      pages        = {228909 -},
      year         = {2021},
      abstract     = {This study is focused on the development of layered
                      perovskites based alternative oxygen electrodes for high
                      temperature Solid Oxide Electrolysis Cells (SOECs). In this
                      respect, rare earth nickelates Ln2NiO4+δ (Ln = La, Pr or
                      Nd) have taken considerable attention due to their good
                      electrochemical properties resulting from high oxide ion
                      diffusivity and a large surface exchange rate. Among them,
                      Pr2NiO4+δ (PNO) shows the best electrochemical properties,
                      however, it displays relatively higher degradation rate
                      under SOEC operation at high current density. Therefore, in
                      this work, we perform further modification by substituting
                      nickel by cobalt in order to enhance the physico-chemical
                      properties, electrochemical performance and most importantly
                      the durability of SOECs. Three compositions (x = 0.0, 0.1
                      and 0.2) are prepared and characterized using different
                      techniques. The electrochemical measurements are performed
                      with symmetrical as well as single cells using DC- and
                      AC-techniques in the 700–900 °C temperature range. The
                      electrode reaction mechanism is also examined by recording
                      the impedance spectra at different pO2. An improvement in
                      electrochemical performance as well as lower degradation
                      rate is observed with cobalt substitution, during short term
                      SOEC operation at −1 A⋅cm−2 current density at 800 °C
                      with $50\%$ H2 and $50\%$ H2O feed gas mixture.},
      cin          = {IEK-9},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-9-20110218},
      pnm          = {131 - Electrochemical Storage (POF3-131)},
      pid          = {G:(DE-HGF)POF3-131},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000597272900004},
      doi          = {10.1016/j.jpowsour.2020.228909},
      url          = {https://juser.fz-juelich.de/record/884210},
}