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@ARTICLE{Liu:863205,
      author       = {Liu, Haidong and Zhang, Xiaofei and He, Xin and Senyshyn,
                      Anatoliy and Wilken, Andrea and Zhou, Dong and Fromm, Olga
                      and Niehoff, Philip and Yan, Bo and Li, Jinke and
                      Muehlbauer, Martin and Wang, Jun and Schumacher, Gerhard and
                      Paillard, Elie and Winter, Martin and Li, Jie},
      title        = {{T}runcated {O}ctahedral {H}igh-{V}oltage {S}pinel {L}i{N}i
                      0.5 {M}n 1.5 {O} 4 {C}athode {M}aterials for {L}ithium {I}on
                      {B}atteries: {P}ositive {I}nfluences of {N}i/{M}n
                      {D}isordering and {O}xygen {V}acancies},
      journal      = {Journal of the Electrochemical Society},
      volume       = {165},
      number       = {9},
      issn         = {1945-7111},
      address      = {Pennington, NJ},
      publisher    = {Electrochemical Soc.},
      reportid     = {FZJ-2019-03299},
      pages        = {A1886 - A1896},
      year         = {2018},
      abstract     = {Micron-sized truncated octahedral LiNi0.5Mn1.5O4 (LNMO)
                      samples with different degrees of Ni/Mn disordering have
                      been obtained by controlling the synthesis conditions, such
                      as calcination atmosphere (O2 and air), cooling rate or
                      additional annealing step. The influences of Ni/Mn
                      disordering on the physical properties and electrochemical
                      performance of the truncated octahedral LNMO samples have
                      been systematically investigated. The analyses of
                      thermogravimetry, X-ray photoelectron spectroscopy, X-ray
                      diffraction, powder neutron diffraction, Raman spectroscopy
                      and X-ray absorption spectroscopy reveal that the occurrence
                      and degree of Ni/Mn disordering are closely related with the
                      formation of oxygen vacancies and presence of Mn3+. Slow
                      cooling rate and post-annealing can result in low degrees of
                      Ni/Mn disordering and oxygen vacancies. Electrochemical
                      measurements show that Ni/Mn disordering and oxygen
                      vacancies have no obvious effect on the rate capability
                      since all LNMO samples share a truncated octahedral
                      morphology with the exposed {100} surfaces. However, they
                      play significant roles in improving long-term cycling
                      stability, especially at the elevated temperature of 60°C.
                      This work suggests that the electrochemical performance of
                      LNMO with optimized truncated morphology can be further
                      enhanced through tuning the degrees of Ni/Mn disordering and
                      oxygen vacancies.},
      cin          = {IEK-12},
      ddc          = {660},
      cid          = {I:(DE-Juel1)IEK-12-20141217},
      pnm          = {131 - Electrochemical Storage (POF3-131)},
      pid          = {G:(DE-HGF)POF3-131},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000440924800040},
      doi          = {10.1149/2.1241809jes},
      url          = {https://juser.fz-juelich.de/record/863205},
}