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@ARTICLE{Lewerenz:866900,
      author       = {Lewerenz, Meinert and Käbitz, Stefan and Knips, Marcus and
                      Münnix, Jens and Schmalstieg, Johannes and Warnecke,
                      Alexander and Sauer, Dirk Uwe},
      title        = {{N}ew method evaluating currents keeping the voltage
                      constant for fast and highly resolved measurement of
                      {A}rrhenius relation and capacity fade},
      journal      = {Journal of power sources},
      volume       = {353},
      issn         = {0378-7753},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2019-05960},
      pages        = {144 - 151},
      year         = {2017},
      abstract     = {The evaluation of floating currents is a powerful method to
                      characterize capacity fade induced by calendaric aging and
                      enables a highly resolved representation of the Arrhenius
                      relation. The test arrangement is simple and could
                      constitute a cheap alternative to state-of-the-art
                      calendaric aging tests including check-up tests. Therefore
                      the currents to maintain a constant voltage are evaluated.
                      This method is validated by analyzing nine cylindrical 8 Ah
                      LiFePO4|Graphite battery cells during calendaric aging at 25
                      °C, 40 °C and 60 °C at 3.6 V $(100\%$ SOC). The 3.6 V are
                      kept by applying constant voltage while the floating
                      currents are logged. The floating currents correlate with
                      the rate of capacity loss measured during capacity tests.
                      The floating currents reveal to be rather constant at 25
                      °C, linearly increasing at 40 °C and decreasing from a
                      higher level at 60 °C. Additional tests with three test
                      cells, with the temperature rising from 40 to 60 °C in
                      steps of 5 K, exhibit non-constant currents starting from 50
                      °C on with high variations amongst the tested cells. Once
                      stored above 50 °C, the cells exhibit increased floating
                      currents compared to the measurement at the same temperature
                      before exceeding 50 °C.},
      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:000401208100017},
      doi          = {10.1016/j.jpowsour.2017.03.136},
      url          = {https://juser.fz-juelich.de/record/866900},
}