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@ARTICLE{Kim:867278,
      author       = {Kim, Un‐Hyuck and Ryu, Hoon‐Hee and Kim, Jae‐Hyung
                      and Mücke, Robert and Kaghazchi, Payam and Yoon, Chong S.
                      and Sun, Yang‐Kook},
      title        = {{M}icrostructure‐{C}ontrolled {N}i‐{R}ich {C}athode
                      {M}aterial by {M}icroscale {C}ompositional {P}artition for
                      {N}ext‐{G}eneration {E}lectric {V}ehicles},
      journal      = {Advanced energy materials},
      volume       = {9},
      number       = {15},
      issn         = {1614-6840},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2019-06036},
      pages        = {1803902 -},
      year         = {2019},
      abstract     = {A multicompositional particulate Li[Ni0.9Co0.05Mn0.05]O2
                      cathode in which Li[Ni0.94Co0.038Mn0.022]O2 at the particle
                      center is encapsulated by a 1.5 µm thick concentration
                      gradient (CG) shell with the outermost surface composition
                      Li[Ni0.841Co0.077Mn0.082]O2 is synthesized using a
                      differential coprecipitation process. The microscale
                      compositional partitioning at the particle level combined
                      with the radial texturing of the refined primary particles
                      in the CG shell layer protracts the detrimental H2 → H3
                      phase transition, causing sharp changes in the unit cell
                      dimensions. This protraction, confirmed by in situ X‐ray
                      diffraction and transmission electron microscopy, allows
                      effective dissipation of the internal strain generated upon
                      the H2 → H3 phase transition, markedly improving cycling
                      performance and thermochemical stability as compared to
                      those of the conventional single‐composition
                      Li[Ni0.9Co0.05Mn0.05]O2 cathodes. The compositionally
                      partitioned cathode delivers a discharge capacity of 229 mAh
                      g−1 and exhibits capacity retention of $88\%$ after 1000
                      cycles in a pouch‐type full cell (compared to $68\%$ for
                      the conventional cathode). Thus, the proposed cathode
                      material provides an opportunity for the rational design and
                      development of a wide range of multifunctional cathodes,
                      especially for Ni‐rich Li[NixCoyMn1‐x‐y]O2 cathodes,
                      by compositionally partitioning the cathode particles and
                      thus optimizing the microstructural response to the internal
                      strain produced in the deeply charged state.},
      cin          = {IEK-1},
      ddc          = {050},
      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:000465464500010},
      doi          = {10.1002/aenm.201803902},
      url          = {https://juser.fz-juelich.de/record/867278},
}