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@ARTICLE{Xu:887829,
      author       = {Xu, Pengyu and Rheinheimer, Wolfgang and Shuvo, Shoumya
                      Nandy and Qi, Zhimin and Levit, Or and Wang, Haiyan and
                      Ein‐Eli, Yair and Stanciu, Lia A.},
      title        = {{O}rigin of {H}igh {I}nterfacial {R}esistances in
                      {S}olid‐{S}tate {B}atteries: {I}nterdiffusion and
                      {A}morphous {F}ilm {F}ormation in {L}i 0.33 {L}a 0.57
                      {T}i{O} 3 /{L}i{M}n 2 {O} 4 {H}alf {C}ells},
      journal      = {ChemElectroChem},
      volume       = {6},
      number       = {17},
      issn         = {2196-0216},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2020-04455},
      pages        = {4576 - 4585},
      year         = {2019},
      abstract     = {The large interfacial resistance between electrolyte and
                      electrodes poses a significant roadblock for the application
                      of all‐solid‐state batteries. The formation of
                      interfacial phases (interphases) has been identified as one
                      of the most significant sources for such high resistance.
                      Therefore, studying the mechanism of interphase formation,
                      along with investigating its effect on ionic conductivity,
                      could lead to the discovery of avenues towards designing
                      high‐performance all‐solid‐state batteries. In this
                      work, we studied the interphase formation in the perovskite
                      electrolyte Li0.33La0.57TiO3 (LLTO) and spinel cathode
                      LiMn2O4 (LMO) pair by co‐sintering experiments via spark
                      plasma sintering (SPS), as well as conventional sintering.
                      Although the processing method has an influence on the
                      electrode/electrolyte contact, the formation of an
                      interphase could not be avoided. At the LLTO/ LMO interface,
                      we observed both an interphase formed by interdiffusion, as
                      well as a complexion‐like amorphous layer. We directly
                      characterized the complexion layer morphology by using
                      HRTEM. Analytical TEM and SEM were used to reveal the
                      elemental composition of the interphase and the
                      interdiffusion layer. Furthermore, we used impedance
                      spectroscopy to measure the electrical properties of the
                      LLTO/LMO interphase and identified the interfacial
                      resistance from the interdiffusion induced interphase to be
                      larger than the individual phases by a factor of 40, whereas
                      the amorphous layer was not visible in the impedance.},
      cin          = {IEK-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000485947800030},
      doi          = {10.1002/celc.201901068},
      url          = {https://juser.fz-juelich.de/record/887829},
}