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@ARTICLE{Wagner:829003,
      author       = {Wagner, Ralf and Streipert, Benjamin and Kraft, Vadim and
                      Reyes Jiménez, Antonia and Röser, Stephan and
                      Kasnatscheew, Johannes and Gallus, Dennis Roman and Börner,
                      Markus and Mayer, Christoph and Arlinghaus, Heinrich Franz
                      and Korth, Martin and Amereller, Marius and Cekic-Laskovic,
                      Isidora and Winter, Martin},
      title        = {{C}ounterintuitive {R}ole of {M}agnesium {S}alts as
                      {E}ffective {E}lectrolyte {A}dditives for {H}igh {V}oltage
                      {L}ithium-{I}on {B}atteries},
      journal      = {Advanced materials interfaces},
      volume       = {3},
      number       = {15},
      issn         = {2196-7350},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2017-02820},
      pages        = {1600096 -},
      year         = {2016},
      abstract     = {Further development of high voltage lithium-ion batteries
                      requires electrolyte formulations stable against oxidation
                      or measures to generate a protective cathode/electrolyte
                      interface (CEI) film. In the frame of this work, the
                      actually counterintuitive concept of using metal ions as
                      electrolyte additives to stabilize the CEI has proven to be
                      successful. The addition of 1 $wt\%$ magnesium
                      bis(trifluoromethanesulfonyl)imide (Mg(TFSI)2) as
                      electrolyte additive to a conventional LiPF6/organic
                      carbonate electrolyte suppresses the oxidative decomposition
                      of the bulk electrolyte as displayed in improved capacity
                      retention, increased Coulombic efficiencies, and reduced
                      self-discharge of LiNi1/3Mn1/3Co1/3O2 (NMC111)/Li half cells
                      charged to the elevated upper cutoff potential of 4.6 V
                      versus Li/Li+ at 20 °C. Moreover, the addition of Mg(TFSI)2
                      shows no adverse effect on the cycling performance of
                      graphite anodes, as observed by good long-term cycling
                      results of NMC111/graphite full cells. Ex situ analysis via
                      X-ray photoelectron spectroscopy, scanning electron
                      microscopy, time-of-flight secondary ion mass spectrometry,
                      and electron energy loss spectroscopy of the harvested
                      NMC111 electrodes after cycling indicate that the addition
                      of Mg2+ ions leads to the formation of a CEI layer as a
                      result of an increased hydrolysis reaction of the PF6 –
                      anion.},
      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},
      UT           = {WOS:000383782400005},
      doi          = {10.1002/admi.201600096},
      url          = {https://juser.fz-juelich.de/record/829003},
}