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@ARTICLE{Roering:1026619,
      author       = {Roering, Philipp and Overhoff, Gerrit Michael and Liu, Kun
                      Ling and Winter, Martin and Brunklaus, Gunther},
      title        = {{E}xternal {P}ressure in {P}olymer-{B}ased {L}ithium
                      {M}etal {B}atteries: {A}n {O}ften-{N}eglected {C}riterion
                      {W}hen {E}valuating {C}ycling {P}erformance?},
      journal      = {ACS applied materials $\&$ interfaces},
      volume       = {16},
      number       = {17},
      issn         = {1944-8244},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {FZJ-2024-03473},
      pages        = {21932 - 21942},
      year         = {2024},
      abstract     = {Solid-state batteries based on lithium metal anodes, solid
                      electrolytes, and composite cathodes constitute a promising
                      battery concept for achieving high energy density. Charge
                      carrier transport within the cells is governed by solid−
                      solid contacts, emphasizing the importance of well-designed
                      interfaces. A key parameter for enhancing the interfacial
                      contacts among electrode active materials and electrolytes
                      comprises externally applied pressure onto the cell stack,
                      particularly in the case of ceramic electrolytes. Reports
                      exploring the impact of external pressure on polymer-based
                      cells are, however, scarce due to overall better wetting
                      behavior. In this work, the consequences of externally
                      applied pressure in view of key performance indicators,
                      including cell longevity, rate capability, and limiting
                      current density in single-layer pouch-type NMC622||Li cells,
                      are evaluated employing cross-linked poly(ethylene oxide),
                      xPEO, and cross-linked cyclodextrin grafted
                      poly(caprolactone), xGCD-PCL. Notably, externally applied
                      pressure substantially changes the cell's electrochemical
                      cycling performance, strongly depending on the mechanical
                      properties of the considered polymers. Higher external
                      pressure potentially enhances electrode− electrolyte
                      interfaces, thereby boosting the rate capability of
                      pouch-type cells, despite the fact that the cell longevity
                      may be reduced upon plastic deformation of the polymer
                      electrolytes when passing beyond intrinsic thresholds of
                      compressive stress. For the softer xGCD-PCL membrane,
                      cycling of cells is only feasible in the absence of external
                      pressure, whereas in the case of xPEO, a trade-off between
                      enhanced rate capability and minimal membrane deformation is
                      achieved at cell pressures of ≤0.43 MPa, which is
                      considerably lower and more practical compared to cells
                      employing ceramic electrolytes with ≥5 MPa external
                      pressure.},
      cin          = {IEK-12},
      ddc          = {600},
      cid          = {I:(DE-Juel1)IEK-12-20141217},
      pnm          = {1222 - Components and Cells (POF4-122) / 1223 - Batteries
                      in Application (POF4-122) / FB2-POLY - Zellplattform
                      Polymere (BMBF-13XP0429A)},
      pid          = {G:(DE-HGF)POF4-1222 / G:(DE-HGF)POF4-1223 /
                      G:(DE-Juel1)BMBF-13XP0429A},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {38649156},
      UT           = {WOS:001242182900001},
      doi          = {10.1021/acsami.4c02095},
      url          = {https://juser.fz-juelich.de/record/1026619},
}