% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Pfrang:845932,
      author       = {Pfrang, A. and Kersys, A. and Kriston, A. and Sauer, Dirk
                      Uwe and Rahe, Christiane and Käbitz, Stefan and Figgemeier,
                      Egbert},
      title        = {{L}ong-term cycling induced jelly roll deformation in
                      commercial 18650 cells},
      journal      = {Journal of power sources},
      volume       = {392},
      issn         = {0378-7753},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2018-03130},
      pages        = {168-175},
      year         = {2018},
      abstract     = {The effects of extended charge/discharge cycling on the
                      morphology of the jelly roll of commercial 18650 lithium-ion
                      battery cells (Sanyo UR18650E) are shown and discussed.
                      Using micro X-ray computed tomography combined with
                      post-mortem analysis it is shown that the jelly roll
                      exhibits significant deformations after charge/discharge
                      cycling. This effect appears despite the presence of a solid
                      inner pin, which had been suggested in literature as
                      prohibitive for jelly roll deformation. The effect is
                      related to an inhomogeneous architecture of the cells caused
                      mainly by the cathode tab in the vicinity of which
                      deformations were observed most often. While it is shown
                      here that such deformations eventually lead to delamination
                      of the otherwise rather stable cathode coating and cause a
                      rapid capacity fade, jelly roll deformation has also been
                      observed after more than 1700 equivalent full cycles on
                      cells which show a typical, non-accelerated ageing behavior
                      for this cell type. A correlation between occurrence of
                      delamination and occurrence of deformation was clearly
                      identified by combining post-mortem and computed tomography
                      analysis. It is discussed, if the well-documented
                      deformation is caused by thickness variations of the anode
                      and cathode during charge/discharge cycles. Furthermore, an
                      in-depth characterization of the cell design is documented.},
      cin          = {IEK-12},
      ddc          = {620},
      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:000435055500019},
      doi          = {10.1016/j.jpowsour.2018.03.065},
      url          = {https://juser.fz-juelich.de/record/845932},
}