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@ARTICLE{Bhm:890551,
      author       = {Böhm, Daniel and Beetz, Michael and Kutz, Christopher and
                      Zhang, Siyuan and Scheu, Christina and Bein, Thomas and
                      Fattakhova-Rohlfing, Dina},
      title        = {{V}({III})-{D}oped {N}ickel {O}xide-{B}ased {N}anocatalysts
                      for {E}lectrochemical {W}ater {S}plitting: {I}nfluence of
                      {P}hase, {C}omposition, and {D}oping on the
                      {E}lectrocatalytic {A}ctivity},
      journal      = {Chemistry of materials},
      volume       = {32},
      number       = {24},
      issn         = {1520-5002},
      address      = {Washington, DC},
      publisher    = {American Chemical Society},
      reportid     = {FZJ-2021-01033},
      pages        = {10394 - 10406},
      year         = {2020},
      abstract     = {Doped nickel oxide-based compounds are attracting great
                      interest as very efficient and abundant catalysts and were
                      thoroughly investigated as battery materials in the past.
                      However, there is still no clear understanding of the
                      influence of dopants on the complex dynamic character of
                      their chemically and potentially driven transformations. We
                      have developed a synthesis procedure enabling the controlled
                      formation of nanosized nickel hydroxide and nickel oxide
                      polymorphs substituted with vanadium(III) [V(III)] ions and
                      further investigated their structure–activity correlation
                      for electrochemical water oxidation. This work therefore
                      primarily focuses on an in-depth structural characterization
                      of the homogeneously doped nanosized α- and β-Ni(OH)2
                      polymorphs. It could be shown that concentrations of 10 at.
                      $\%$ V(III) and higher can effectively inhibit a spontaneous
                      phase transformation known as chemical aging of the
                      turbostratic α-phase to the more crystalline β-Ni(OH)2
                      phase in neutral aqueous media. The Fe-impurity-biased
                      electrocatalytic activity determined for
                      α-/β-Ni1–xVx(OH)2 showed only a minor increase of $10\%$
                      oxygen evolution reaction (OER) activity for an 1 at. $\%$
                      doped nonaged sample resembling the α-phase, while a 5 at.
                      $\%$ V(III)-doped sample chemically aged over 24 h led to a
                      doubled OER activity versus the undoped reference which
                      transformed into β-Ni(OH)2 over that period of time.},
      cin          = {IEK-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {131 - Electrochemical Storage (POF3-131)},
      pid          = {G:(DE-HGF)POF3-131},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000603288800009},
      doi          = {10.1021/acs.chemmater.0c02851},
      url          = {https://juser.fz-juelich.de/record/890551},
}