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@INPROCEEDINGS{Uhlenbruck:202507,
      author       = {Uhlenbruck, Sven and Tsai, Chih-Long and Dellen, Christian
                      and Ma, Qianli and Lobe, Sandra and Guillon, Olivier},
      title        = {{T}he {E}ffect of {C}athode {M}icrostructure on the
                      {P}erformance of {A}ll {S}olid-{S}tate {L}i {B}attery},
      reportid     = {FZJ-2015-04711},
      year         = {2015},
      abstract     = {All solid-state Li batteries based on oxide-class solid
                      electrolyte are considered to be out-standing from the other
                      electrolytes due to their high safety and higher energy
                      density. Among the Li-ion conductive oxides, materials with
                      garnet structure such as Ta-substituted Li7La3Zr2O12
                      (LLZ:Ta) have been attracting most of attention due to their
                      high total Li-ion conductivity, wide electrochemical
                      stability window, stability against metallic Li and easy
                      handling for fabrication (i.e. inertness to oxygen). The use
                      of LLZ as solid electrolyte for solid-state battery had been
                      reported in several papers. However, the reported
                      solid-state batteries were all constructed with a thin film
                      cathode which was made either by physical vapor or sol-gel
                      deposition. The thin film cathodes were usually under or
                      around 1 m in thickness which made the energy density of
                      these SSBs useful for small scale applications.Electrolyte
                      supported solid-state batteries using LLZ:Ta with thick
                      cathodes (> 50 m) have been constructed in our laboratory
                      by screen-printing process. A proper sintering process was
                      invested for well bonding the thick cathode layer to the
                      supporting electrolyte. The constructed solid-state Li
                      batteries exhibited good charge-discharge utilization of
                      active material of more than $80\%$ which is equal to a
                      capacity density of more than 1 mAh cm-2 at 100 oC. It also
                      exhibited good cycle ability so that one hundred of cycles
                      were achieved. However, the reduction of high internal
                      resistance of the cell is still the major challenge for
                      further improvement of the battery performance, especially
                      if the application of this all solid state Li battery is
                      toward room temperature. During this presentation, results
                      from material chemical stability, cell morphology,
                      electrochemical performance and the challenges of building
                      up Li battery by using LLZ:Ta will be discussed.},
      month         = {Jun},
      date          = {2015-06-14},
      organization  = {20th International Conference on Solid
                       State Ionics, Keystone (USA), 14 Jun
                       2015 - 19 Jun 2015},
      cin          = {IEK-1},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {131 - Electrochemical Storage (POF3-131) / HITEC -
                      Helmholtz Interdisciplinary Doctoral Training in Energy and
                      Climate Research (HITEC) (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF3-131 / G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)1},
      url          = {https://juser.fz-juelich.de/record/202507},
}