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@ARTICLE{Bhm:866000,
      author       = {Böhm, Daniel and Beetz, Michael and Schuster, Maximilian
                      and Peters, Kristina and Hufnagel, Alexander G. and
                      Döblinger, Markus and Böller, Bernhard and Bein, Thomas
                      and Fattakhova‐Rohlfing, Dina},
      title        = {{E}fficient {OER} {C}atalyst with {L}ow {I}r {V}olume
                      {D}ensity {O}btained by {H}omogeneous {D}eposition of
                      {I}ridium {O}xide {N}anoparticles on {M}acroporous
                      {A}ntimony‐{D}oped {T}in {O}xide {S}upport},
      journal      = {Advanced functional materials},
      volume       = {30},
      number       = {1},
      issn         = {1616-3028},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2019-05260},
      pages        = {1906670 -},
      year         = {2019},
      abstract     = {A multistep synthesis procedure for the homogeneous coating
                      of a complex porous conductive oxide with small Ir
                      nanoparticles is introduced to obtain a highly active
                      electrocatalyst for water oxidation. At first, inverse opal
                      macroporous Sb doped SnO2 (ATO) microparticles with defined
                      pore size, composition, and open‐porous morphology are
                      synthesized that reach a conductivity of ≈3.6 S
                      cm$^{−1}$ and are further used as catalyst support.
                      ATO‐supported iridium catalysts with a controlled amount
                      of active material are prepared by solvothermal reduction of
                      an IrO$_x$ colloid in the presence of the porous ATO
                      particles, whereby homogeneous coating of the complete outer
                      and inner surface of the particles with nanodispersed
                      metallic Ir is achieved. Thermal oxidation leads to the
                      formation of ATO‐supported IrO$_2$ nanoparticles with a
                      void volume fraction of ≈89\% calculated for catalyst thin
                      films based on scanning transmission electron microscope
                      tomography data and microparticle size distribution. A
                      remarkably low Ir bulk density of ≈0.08 g cm$^{−3}$ for
                      this supported oxide catalyst architecture with 25 wt\% Ir
                      is determined. This highly efficient oxygen evolution
                      reaction catalyst reaches a current density of 63 A
                      g$_{Ir}$$^{−1}$ at an overpotential of 300 mV versus
                      reversible hydrogen electrode, significantly exceeding a
                      commercial TiO$_2$‐supported IrO$_2$ reference catalyst
                      under the same measurement conditions.},
      cin          = {IEK-1},
      ddc          = {530},
      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:000492384200001},
      doi          = {10.1002/adfm.201906670},
      url          = {https://juser.fz-juelich.de/record/866000},
}