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@ARTICLE{Baeumer:891112,
      author       = {Baeumer, Christoph and Li, Jiang and Lu, Qiyang and Liang,
                      Allen Yu-Lun and Jin, Lei and Martins, Henrique Perin and
                      Duchoň, Tomáš and Glöß, Maria and Gericke, Sabrina M.
                      and Wohlgemuth, Marcus A. and Giesen, Margret and Penn,
                      Emily E. and Dittmann, Regina and Gunkel, Felix and Waser,
                      R. and Bajdich, Michal and Nemšák, Slavomír and Mefford,
                      J. Tyler and Chueh, William C.},
      title        = {{T}uning electrochemically driven surface transformation in
                      atomically flat {L}a{N}i{O}3 thin films for enhanced water
                      electrolysis},
      journal      = {Nature materials},
      volume       = {20},
      issn         = {1476-4660},
      address      = {Basingstoke},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2021-01373},
      pages        = {674–682},
      year         = {2021},
      abstract     = {Structure–activity relationships built on descriptors of
                      bulk and bulk-terminated surfaces are the basis for the
                      rational design of electrocatalysts. However,
                      electrochemically driven surface transformations complicate
                      the identification of such descriptors. Here we demonstrate
                      how the as-prepared surface composition of (001)-terminated
                      LaNiO3 epitaxial thin films dictates the surface
                      transformation and the electrocatalytic activity for the
                      oxygen evolution reaction. Specifically, the Ni termination
                      (in the as-prepared state) is considerably more active than
                      the La termination, with overpotential differences of up to
                      150 mV. A combined electrochemical, spectroscopic and
                      density-functional theory investigation suggests that this
                      activity trend originates from a thermodynamically stable,
                      disordered NiO2 surface layer that forms during the
                      operation of Ni-terminated surfaces, which is kinetically
                      inaccessible when starting with a La termination. Our work
                      thus demonstrates the tunability of surface transformation
                      pathways by modifying a single atomic layer at the surface
                      and that active surface phases only develop for select
                      as-synthesized surface terminations.},
      cin          = {PGI-7 / PGI-10 / JARA-FIT / PGI-6 / ER-C-1},
      ddc          = {610},
      cid          = {I:(DE-Juel1)PGI-7-20110106 / I:(DE-Juel1)PGI-10-20170113 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)PGI-6-20110106 /
                      I:(DE-Juel1)ER-C-1-20170209},
      pnm          = {523 - Neuromorphic Computing and Network Dynamics
                      (POF4-523)},
      pid          = {G:(DE-HGF)POF4-523},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {33432142},
      UT           = {WOS:000607023400007},
      doi          = {10.1038/s41563-020-00877-1},
      url          = {https://juser.fz-juelich.de/record/891112},
}