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@INPROCEEDINGS{Teucher:202230,
      author       = {Teucher, Georg and Krott, Manuel and Van Gestel, Tim and
                      Uhlenbruck, Sven and Guillon, Olivier and Eichel,
                      Rüdiger-A. and Beltrop, Kolja},
      title        = {{A}nodic {D}issolution in {D}ual-{I}on {B}atteries:
                      {D}evelopment of {P}rotection {L}ayers for {C}urrent
                      {C}ollectors},
      school       = {RWTH Aachen},
      reportid     = {FZJ-2015-04519},
      year         = {2015},
      abstract     = {One aspect of the current research on lithium ion batteries
                      is the increase of the cell voltage to improve the energy
                      density. In innovative dual-ion cells, graphite
                      intercalation compounds are used for both electrodes.
                      Consequently, a simultaneous intercalation of lithium ions
                      into the anode and the corresponding salt anions into the
                      cathode is possible and enables voltage values above 5 V vs.
                      Li/Li+. Established liquid electrolytes, consisting of
                      carbonates and lithium hexafluorophosphate, do not resist
                      these conditions. Therefore, we replace this mixture by
                      ethyl methanesulfonate and organic lithium salts, having a
                      good electrochemical performance also at higher
                      temperatures. Now, it is the challenge to overcome the
                      anodic dissolution of the aluminum current collector
                      triggered by fluorinated anions like
                      bis(trifluoromethylsulfonyl)imide (TFSI-). Our approach to
                      protect the metal against anodic dissolution is the
                      deposition of an only electronically conductive, defect-free
                      and mechanically as well as electrochemically stable layer.
                      We test different material compositions in the range of
                      oxidic ceramics. First of all semiconductors like alumina
                      doped zinc oxide show promising results to meet the
                      requirements. The preparation is based on a sol-gel route
                      combined with several wet-chemical coating methods, because
                      these are easily adjustable to different substrate
                      dimensions. Ceramic thin layers of around 100 nm thickness
                      are deposited on aluminum foil and mainly investigated by
                      scanning electron microscopy, X-ray diffraction and
                      secondary ion mass spectrometry. Additionally, we present
                      conductivity measurements and the electrochemical
                      performance tested with cyclic voltammetry.},
      month         = {May},
      date          = {2015-05-24},
      organization  = {227th ECS Meeting der Electrochemical
                       Society, Chicago (USA), 24 May 2015 -
                       28 May 2015},
      subtyp        = {After Call},
      cin          = {IEK-1 / IEK-9},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-9-20110218},
      pnm          = {131 - Electrochemical Storage (POF3-131) / HITEC -
                      Helmholtz Interdisciplinary Doctoral Training in Energy and
                      Climate Research (HITEC) (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF3-131 / G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/202230},
}