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@INPROCEEDINGS{Bladt:1021024,
      author       = {Bladt, Eva and Pivak, Yevheniy and Park, Junbeom and Weber,
                      Dieter and Jo, Janghyun and Basak, Shibabrata and Eichel,
                      Rüdiger-A. and Sun, Hongyu},
      title        = {{M}etal {E}lectroplating/{S}tripping and 4{D} {STEM}
                      {A}nalysis{R}evealed by {L}iquid {P}hase {T}ransmission
                      {E}lectron{M}icroscopy},
      journal      = {Microscopy and microanalysis},
      volume       = {29},
      number       = {$Supplement_1$},
      issn         = {1079-8501},
      address      = {Oxford},
      publisher    = {Oxford University Press},
      reportid     = {FZJ-2024-00484},
      pages        = {1304 - 1305},
      year         = {2023},
      abstract     = {Aqueous zinc ion and metal-based batteries have attracted
                      much attention towards the development of an alternative
                      electrochemical energy storage technology beyond lithium ion
                      batteries [1]. There are several advantages of metal-based
                      batteries, including high volumetric capacity (∼8000
                      mAh/L), low anode potential (∼0.7 V vs. SHE), safety and
                      electrode abundance.However, the problem of metallic
                      dendrite growth during cycling can cause battery short
                      circuit failure, which can result in safetyhazards and
                      severely limit the progress and further commercialization
                      [2, 3]. To this end, direct visualization of dendrite
                      evolutionunder operando conditions is a prerequisite for
                      battery safety and longevity. Among the many operando/in
                      situ techniques, the useof liquid phase transmission
                      electron microscopy (LPTEM) [4] has been very effective in
                      enabling a more detailed understandingof metal plating and
                      stripping, where the ability to locally probe and visualize
                      the key processes governing the dendrite formation.However,
                      it remains challenging to perform high resolution and
                      analytical electron microscopy studies in a liquid cell,
                      especiallyunder liquid flow conditions.In this work, we use
                      LPTEM [5, 6] to directly visualize the electroplating and
                      stripping of metals on micro-electrodes of dedicated MEMS
                      (micro-electro-mechanical system) chips at the nanoscale. By
                      comparing the plating/stripping under different chemical
                      and/or electrochemical environments, including static or
                      flow electrolyte conditions and varying current densities,
                      we showhow metal dendrites can be effectively controlled on
                      electrochemical cycling of the battery, as revealed by our
                      operando LPTEMobservations. In addition, we recently
                      developed a liquid purging approach, which is based on the
                      DENSsolutions unique LiquidSupply System and the on-chip
                      liquid flow capability (Figure 1). This approach enables one
                      to perform 4D STEM electron diffraction analysis on the
                      plating (Figure 2). Following the experimental results, the
                      growth of zinc dendrites can be effectively mitigated and
                      directly minimized by flowing electrolyte into the cell and
                      adjusting the current density, thus, providing new
                      insightsinto the aqueous metal battery’s chemistry and the
                      pathways for further optimization.},
      month         = {Jul},
      date          = {2023-07-23},
      organization  = {Microscopy and Microanalysis 2023,
                       Minneapolis (USA), 23 Jul 2023 - 27 Jul
                       2023},
      cin          = {IEK-9},
      ddc          = {500},
      cid          = {I:(DE-Juel1)IEK-9-20110218},
      pnm          = {1232 - Power-based Fuels and Chemicals (POF4-123)},
      pid          = {G:(DE-HGF)POF4-1232},
      typ          = {PUB:(DE-HGF)16 / PUB:(DE-HGF)8},
      doi          = {10.1093/micmic/ozad067.667},
      url          = {https://juser.fz-juelich.de/record/1021024},
}