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@ARTICLE{Gao:1024808,
      author       = {Gao, Ping and Zhang, Fei and Wang, Xingchao and Wu,
                      Miaomiao and Xiang, Qian and Yang, Aikai and Sun, Ying and
                      Guo, Jixi and Huang, Yudai},
      title        = {{U}ltrastable {D}endrite-{F}ree {P}otassium {M}etal
                      {B}atteries {E}nabled by {W}eakly-{S}olvated {E}lectrolyte},
      journal      = {ACS nano},
      volume       = {17},
      number       = {20},
      issn         = {1936-0851},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {FZJ-2024-02474},
      pages        = {20325 - 20333},
      year         = {2023},
      abstract     = {Potassium (K) metal is considered one of the most promising
                      anodes for potassium metal batteries (PMBs) because of its
                      abundant and low-cost advantages but suffers from serious
                      dendritic growth and parasitic reactions, resulting in poor
                      cyclability, low Coulombic efficiency (CE), and safety
                      concerns. In this work, we report a localized
                      high-concentration electrolyte (LHCE) consisting of
                      potassium bis(fluorosulfonyl)imide (KFSI) in a cosolvent of
                      1,2-dimethoxyethane (DME) and
                      1,1,2,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether
                      (TTE) to solve the problems of PMBs. TTE as a diluent not
                      only endows LHCE with advantages of low viscosity, good
                      wettability, and improved conductivity but also solves the
                      dendrite problem pertaining to K metal anodes. Using the
                      formulation of LHCE, a CE of $98\%$ during 800 cycles in the
                      K||Cu cell and extremely stable cycling of over 2000 h in
                      the K||K symmetric cell are achieved at a current density of
                      0.1 mA cm–2. In addition, the LHCE shows good
                      compatibility with a Prussian Blue cathode, allowing almost
                      $99\%$ CE for the K||KFeIIFeIII(CN)6 full cell during 100
                      cycles. This promising electrolyte design realizes
                      high-safety and energy-dense PMBs.},
      cin          = {IEK-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {1222 - Components and Cells (POF4-122)},
      pid          = {G:(DE-HGF)POF4-1222},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {37830495},
      UT           = {WOS:001090952700001},
      doi          = {10.1021/acsnano.3c06368},
      url          = {https://juser.fz-juelich.de/record/1024808},
}