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@ARTICLE{Hou:999182,
      author       = {Hou, An-Yuan and Huang, Chih-Yang and Tsai, Chih-Long and
                      Huang, Chun-Wei and Schierholz, Roland and Lo, Hung-Yang and
                      Tempel, Hermann and Kungl, Hans and Eichel, Rüdiger-A. and
                      Chang, Jeng-Kuei and Wu, Wen-Wei},
      title        = {{A}ll‐{S}olid‐{S}tate {G}arnet‐{B}ased {L}ithium
                      {B}atteries at {W}ork–{I}n {O}perando {TEM}
                      {I}nvestigations of {D}elithiation/{L}ithiation {P}rocess
                      and {C}apacity {D}egradation {M}echanism},
      journal      = {Advanced science},
      volume       = {10},
      number       = {5},
      issn         = {2198-3844},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2023-01216},
      pages        = {2205012 -},
      year         = {2023},
      abstract     = {Li7La3Zr2O12 (LLZO)-based all-solid-state Li batteries
                      (SSLBs) are very attractive next-generation energy storage
                      devices owing to their potential for achieving enhanced
                      safety and improved energy density. However, the rigid
                      nature of the ceramics challenges the SSLB fabrication and
                      the afterward interfacial stability during electrochemical
                      cycling. Here, a promising LLZO-based SSLB with a high areal
                      capacity and stable cycle performance over 100 cycles is
                      demonstrated. In operando transmission electron microscopy
                      (TEM) is used for successfully demonstrating and
                      investigating the delithiation/lithiation process and
                      understanding the capacity degradation mechanism of the SSLB
                      on an atomic scale. Other than the interfacial delamination
                      between LLZO and LiCoO2 (LCO) owing to the stress evolvement
                      during electrochemical cycling, oxygen deficiency of LCO not
                      only causes microcrack formation in LCO but also partially
                      decomposes LCO into metallic Co and is suggested to
                      contribute to the capacity degradation based on the
                      atomic-scale insights. When discharging the SSLB to a
                      voltage of ≈1.2 versus Li/Li+, severe capacity fading from
                      the irreversible decomposition of LCO into metallic Co and
                      Li2O is observed under in operando TEM. These observations
                      reveal the capacity degradation mechanisms of the LLZO-based
                      SSLB, which provides important information for future
                      LLZO-based SSLB developments.},
      cin          = {IEK-9},
      ddc          = {624},
      cid          = {I:(DE-Juel1)IEK-9-20110218},
      pnm          = {1223 - Batteries in Application (POF4-122)},
      pid          = {G:(DE-HGF)POF4-1223},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {36529956},
      UT           = {WOS:000899651100001},
      doi          = {10.1002/advs.202205012},
      url          = {https://juser.fz-juelich.de/record/999182},
}