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@ARTICLE{Li:605338,
      author       = {Li, Yongchun and Mazzio, Katherine and Yaqoob, Najma and
                      Sun, Yanan and Freytag, Annica I. and Wong, Deniz and
                      Schulz, Christian and Baran, Volodymyr and San Jose Mendez,
                      Alba and Schuck, Götz and Zając, Marcin and Kaghazchi,
                      Payam and Adelhelm, Philipp},
      title        = {{C}ompeting {M}echanisms {D}etermine {O}xygen {R}edox in
                      {D}oped {N}i–{M}n {B}ased {L}ayered {O}xides for
                      {N}a‐{I}on {B}atteries},
      journal      = {Advanced materials},
      volume       = {36},
      number       = {18},
      issn         = {0935-9648},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {PUBDB-2024-01425},
      pages        = {2309842},
      year         = {2023},
      abstract     = {Cation doping is an effective strategy for improving the
                      cyclability of layered oxide cathode materials through
                      suppression of phase transitions in the high voltage region.
                      In this study, Mg and Sc are chosen as dopants in
                      P2-Na$_{0.67}$Ni$_{0.33}$Mn$_{0.67}$O$_2$, and both have
                      found to positively impact the cycling stability, but
                      influence the high voltage regime in different ways. Through
                      a combination of synchrotron-based methods and theoretical
                      calculations it is shown that it is more than just
                      suppression of the P2 to O2 phase transition that is
                      critical for promoting the favorable properties, and that
                      the interplay between Ni and O activity is also a critical
                      aspect that dictates the performance. With Mg doping, the Ni
                      activity can be enhanced while simultaneously suppressing
                      the O activity. This is surprising because it is in contrast
                      to what has been reported in other Mn-based layered oxides
                      where Mg is known to trigger oxygen redox. This
                      contradiction is addressed by proposing a competing
                      mechanism between Ni and Mg that impacts differences in O
                      activity in Na$_{0.67}$MgxNi$_{0.33-x}$Mn$_{0.67}$O$_2$ (x <
                      0 < 0.33). These findings provide a new direction in
                      understanding the effects of cation doping on the
                      electrochemical behavior of layered oxides.},
      cin          = {FS-PETRA-D / DOOR ; HAS-User},
      ddc          = {660},
      cid          = {I:(DE-H253)FS-PETRA-D-20210408 /
                      I:(DE-H253)HAS-User-20120731},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3},
      experiment   = {EXP:(DE-H253)P-P02.1-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:38269958},
      UT           = {WOS:001150573000001},
      doi          = {10.1002/adma.202309842},
      url          = {https://bib-pubdb1.desy.de/record/605338},
}