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@ARTICLE{Javed:1025002,
      author       = {Javed, Atif and Makvandi, Ardavan and Demelash, Feleke and
                      Adhitama, Egy and Heidrich, Bastian and Peterlechner, Martin
                      and Wilde, Gerhard and Winter, Martin and Börner, Markus},
      title        = {{I}nterphase design of {L}i{N}i 0.6 {M}n 0.2 {C}o 0.2 {O} 2
                      as positive active material for lithium ion batteries via
                      {A}l 2 {O} 3 coatings using magnetron sputtering for
                      improved performance and stability},
      journal      = {Batteries $\&$ supercaps},
      volume       = {7},
      number       = {6},
      issn         = {2566-6223},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2024-02596},
      pages        = {e202300580},
      year         = {2024},
      note         = {Unterstützt durch DFG Major Research Instrumentation
                      Program(INST 211/719-1 FUGG)},
      abstract     = {LiNixMnyCozO2 (x+y+z=1) is one of the most present and
                      versatile positive active materials for lithium ion
                      batteries due to comparatively high specific capacity and
                      high operating potential. However, NMC materials are prone
                      to various degradation effects including moisture uptake,
                      formation of impurities at the particle surface and
                      transition metal dissolution during charge/discharge cycling
                      and/or at elevated temperatures. Beyond that, cation mixing
                      can lead to phase transformation, oxygen evolution, particle
                      cracking and particle disintegration. Therefore, an alumina
                      coating was applied and optimized as protective interphase
                      on LiNi0.6Mn0.2Co0.2O2 (NMC622) powders, using a
                      specifically in-house developed RF-magnetron sputtering
                      technique. The alumina coated NMC622 showed a $13 \%$
                      improvement in capacity retention after 200 charge/discharge
                      cycles in lab-scale cells, compared to pristine uncoated
                      NMC622. Using electrochemical impedance spectroscopy, the
                      interfacial/interphasial resistance of pristine and alumina
                      coated NCM622 based electrodes were explored to study the
                      impact of the coating on lithium ion transport. Furthermore,
                      the structural and thermal stability of cyclic aged NMC622
                      were analyzed via TEM, EELS and TGA. Therein, alumina coated
                      samples demonstrated enhanced thermal stability, less
                      structural degradation, and reduced particle cracking.},
      cin          = {IEK-12},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-12-20141217},
      pnm          = {1221 - Fundamentals and Materials (POF4-122) / BACCARA -
                      Battery and superCapacitor ChARActerization and testing
                      (608491)},
      pid          = {G:(DE-HGF)POF4-1221 / G:(EU-Grant)608491},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001150557400001},
      doi          = {10.1002/batt.202300580},
      url          = {https://juser.fz-juelich.de/record/1025002},
}