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@ARTICLE{Lewerenz:866895,
      author       = {Lewerenz, Meinert and Sauer, Dirk Uwe},
      title        = {{E}valuation of cyclic aging tests of prismatic automotive
                      {L}i{N}i{M}n{C}o{O}2-{G}raphite cells considering influence
                      of homogeneity and anode overhang},
      journal      = {Journal of energy storage},
      volume       = {18},
      issn         = {2352-152X},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2019-05955},
      pages        = {421 - 434},
      year         = {2018},
      abstract     = {Cyclic aging tests of 20 compressed prismatic automotive
                      Li(NiMnCo)O2|Graphite cells are evaluated. The shallow
                      cyclic aging tests are conducted around five average SOCs
                      with respect to the anode. The cells are cycled at two DODs
                      and two C-rates. The irreversible capacity loss is evaluated
                      by the slope of the near-linear part at the end of aging
                      test. The homogeneity of lithium distribution (HLD) is
                      associated with peak height of differential voltage analysis
                      (DVA) and to capacity difference analysis (CDA). The
                      evaluations of DVA, CDA and capacity fade curve are
                      depending mainly on the average SOC and hardly on DOD or
                      C-rate. The trends correlate with the volume expansion
                      originated from the graphite. The highest HLD and the lowest
                      capacity fade are reached around $50\%$ SOC where hardly any
                      additional volume expansion occurs. In the SOC regions with
                      high volume expansion of the graphite the HLD reduces
                      dramatically and the capacity fade rises towards $0\%$ and
                      $100\%,$ respectively. Due to smeared characteristics in
                      DVA, capacity loss cannot be directly separated into shares
                      related to anode overhang, HLD, loss of active material and
                      residual irreversible losses. The combination of cell
                      compression and high gradients of volume expansion during
                      shallow cycling is found to be the root cause for the
                      flattening of DVA curves.},
      cin          = {IEK-12},
      ddc          = {333.7},
      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:000439496500043},
      doi          = {10.1016/j.est.2018.06.003},
      url          = {https://juser.fz-juelich.de/record/866895},
}