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@ARTICLE{Du:1024891,
      author       = {Du, Leilei and Hou, Xu and Berghus, Debbie and
                      Frankenstein, Lars and Schmuch, Richard and Wang, Jun and
                      Paillard, Elie and Winter, Martin and Placke, Tobias and Li,
                      Jie},
      title        = {{F}ailure mechanism of {L}i{N}i 0.6 {C}o 0.2 {M}n 0.2 {O} 2
                      cathodes in aqueous/non-aqueous hybrid electrolyte},
      journal      = {Journal of materials chemistry / A},
      volume       = {11},
      number       = {7},
      issn         = {2050-7488},
      address      = {London ˜[u.a.]œ},
      publisher    = {RSC},
      reportid     = {FZJ-2024-02542},
      pages        = {3663 - 3672},
      year         = {2023},
      note         = {Unterstützt durch DFG Projekt Li 2916/2-1 und das MWIDE
                      Projekt "GrEEn" (313-W044A)},
      abstract     = {The urgent need for improving the energy density of aqueous
                      lithium ion batteries (ALIBs) can be addressed by the
                      implementation of advanced electrode materials and
                      electrolytes. The utilization of layered oxide cathodes,
                      particularly Li[NixCoyMnz]O2 (NCM) materials, is an
                      effective strategy, as they can offer high specific
                      capacities in an appropriate voltage range. However, due to
                      the strong effect of humidity on the degradation of Ni-rich
                      layered oxide cathodes, using these materials together with
                      highly concentrated aqueous electrolytes is critical. In
                      this work, the underlying mechanisms responsible for the
                      degradation of Li[Ni0.6Co0.2Mn0.2]O2
                      (NCM622)‖TiO2@LiTi2(PO4)3 (P/N = 1.2 : 1) full-cells
                      are systematically explored by comprehensive studies,
                      involving the evolution of the lattice structure of NCM622
                      and electrochemical impedance dependent on the operating
                      voltage range (0.7–2.8 V or 0.7–2.9 V). It is found that
                      in aqueous/non-aqueous hybrid electrolyte, in addition to
                      the discharge process, proton intercalation into NCM622 also
                      takes place during the charging process, which is
                      dramatically severe at higher upper cut-off voltage (2.9 V),
                      leading to a rapid degradation of the cathode material. The
                      intercalated protons not only aggravate the electrochemical
                      impedance by blocking Li+ diffusion, but also activate the
                      higher potential redox pairs. This experimental study offers
                      an in-depth understanding about the failure mechanism of
                      NCM622 cathode materials in aqueous electrolytes.},
      cin          = {IEK-12},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IEK-12-20141217},
      pnm          = {1221 - Fundamentals and Materials (POF4-122)},
      pid          = {G:(DE-HGF)POF4-1221},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000922078300001},
      doi          = {10.1039/D2TA08650F},
      url          = {https://juser.fz-juelich.de/record/1024891},
}