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@ARTICLE{Kpers:866200,
      author       = {Küpers, Verena and Kolek, Martin and Bieker, Peter and
                      Winter, Martin and Brunklaus, Gunther},
      title        = {{I}n situ 7 {L}i-{NMR} analysis of lithium metal surface
                      deposits with varying electrolyte compositions and
                      concentrations},
      journal      = {Physical chemistry, chemical physics},
      volume       = {21},
      number       = {47},
      issn         = {1463-9076},
      address      = {Cambridge},
      publisher    = {RSC Publ.},
      reportid     = {FZJ-2019-05371},
      pages        = {26084 - 26094},
      year         = {2019},
      abstract     = {A major challenge of lithium metal electrodes, in theory a
                      suitable choice for rechargeable high energy density
                      batteries, comprises non-homogeneous lithium deposition and
                      the growth of reactive high surface area lithium, which
                      eventually yields active material losses and safety risks.
                      While it is hard to fully avoid inhomogeneous deposits, the
                      achievable morphology of the occurring lithium deposits
                      critically determines the long-term cycling behaviour of the
                      cells. In this work, we focus on a combined scanning
                      electron microscopy (SEM) and 7Li nuclear magnetic resonance
                      spectroscopy (7Li-NMR) study to unravel the impact of the
                      choice of conducting salts (LiPF6 and LiTFSI), solvents
                      (EC : DEC, 3 : 7, DME : DOL, 1 : 1), as well
                      as their respective concentrations (1 M, 3 M) on the
                      electrodeposition process, demonstrating that lithium
                      deposition morphologies may be controlled to a large extent
                      by proper choice of cycling conditions and electrolyte
                      constituents. In addition, the applicability of 7Li-NMR
                      spectroscopy to assess the resulting morphology is
                      discussed. It was found, that lithium deposition analysis
                      based on the 7Li chemical shift and intensity should be used
                      carefully, as various morphologies can lead to similar
                      results. Still, our case study reveals that the combination
                      of SEM and NMR data is rather advantageous and offers
                      complementary insights that may provide pathways for the
                      future design of tailored electrolytes.},
      cin          = {IEK-12},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-12-20141217},
      pnm          = {131 - Electrochemical Storage (POF3-131)},
      pid          = {G:(DE-HGF)POF3-131},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:31746873},
      UT           = {WOS:000501356000013},
      doi          = {10.1039/C9CP05334D},
      url          = {https://juser.fz-juelich.de/record/866200},
}