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@ARTICLE{Shviro:878655,
      author       = {Shviro, Meital and Gocyla, Martin and Polani, Shlomi and
                      Heggen, Marc and Zitoun, David and Dunin‐Borkowski, Rafal
                      E.},
      title        = {{M}orphological, {S}tructural, and {C}ompositional
                      {E}volution of {P}t–{N}i {O}ctahedral {E}lectrocatalysts
                      with {P}t‐{R}ich {E}dges and {N}i‐{R}ich {C}ore:
                      {T}oward the {R}ational {D}esign of {E}lectrocatalysts for
                      the {O}xygen {R}eduction {R}eaction},
      journal      = {Particle $\&$ particle systems characterization},
      volume       = {36},
      number       = {3},
      issn         = {0176-2265},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2020-02976},
      pages        = {1800442 -},
      year         = {2019},
      abstract     = {The progress in colloidal synthesis of Pt–Ni octahedra
                      has been instrumental in rising the oxygen reduction
                      reaction catalytic activity high above the benchmark of Pt
                      catalysts. This impressive catalytic performance is believed
                      to result from the exposure of the most active catalytic
                      sites after an activation process, chemical or
                      electrochemical, which leads to a Pt surface enrichment. A
                      foremost importance is to understand the structure and the
                      elemental distribution of Pt–Ni octahedral, which leads to
                      an optimal catalytic activity and stability. However, the
                      factors governing the synthesis of the Pt–Ni octahedra are
                      not well understood. In this study, unprecedented surface
                      atomic segregation of Pt atoms in a Ni‐rich Pt–Ni
                      octahedral nanoparticle structure is established by advanced
                      electron microscopy. The Pt atoms are almost exclusively
                      located on the edges of the Pt–Ni octahedra. This
                      structure is formed in a pristine form, i.e., prior to any
                      chemical or electrochemical etching. A new growth mechanism
                      is revealed, which involves the transformation from an
                      octahedron with a Pt‐rich core to a Ni‐rich octahedron
                      with Pt‐rich edges. This observation may pave the way for
                      a deeper understanding of this class of Pt–Ni octahedral
                      nanoparticles as an electrocatalyst.},
      cin          = {ER-C-1 / IEK-14},
      ddc          = {660},
      cid          = {I:(DE-Juel1)ER-C-1-20170209 / I:(DE-Juel1)IEK-14-20191129},
      pnm          = {143 - Controlling Configuration-Based Phenomena (POF3-143)
                      / ESTEEM 2 - Enabling Science and Technology through
                      European Electron Microscopy (312483) / DFG project
                      257727131 - Nanoskalige Pt Legierungselektrokatalysatoren
                      mit definierter Morphologie: Synthese, Electrochemische
                      Analyse, und ex-situ/in-situ
                      Transmissionselektronenmikroskopische (TEM) Studien
                      (257727131) / 1231 - Electrochemistry for Hydrogen
                      (POF4-123)},
      pid          = {G:(DE-HGF)POF3-143 / G:(EU-Grant)312483 /
                      G:(GEPRIS)257727131 / G:(DE-HGF)POF4-1231},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000461878400005},
      doi          = {10.1002/ppsc.201800442},
      url          = {https://juser.fz-juelich.de/record/878655},
}