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@ARTICLE{Klein:892524,
      author       = {Klein, Sven and Harte, Patrick and Henschel, Jonas and
                      Bärmann, Peer and Borzutzki, Kristina and Beuse, Thomas and
                      Wickeren, Stefan and Heidrich, Bastian and Kasnatscheew,
                      Johannes and Nowak, Sascha and Winter, Martin and Placke,
                      Tobias},
      title        = {{O}n the {B}eneficial {I}mpact of {L}i 2 {CO} 3 as
                      {E}lectrolyte {A}dditive in {NCM}523 ∥ {G}raphite
                      {L}ithium {I}on {C}ells {U}nder {H}igh‐{V}oltage
                      {C}onditions},
      journal      = {Advanced energy materials},
      volume       = {11},
      number       = {10},
      issn         = {1614-6840},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2021-02132},
      pages        = {2003756 -},
      year         = {2021},
      abstract     = {Lithium ion battery cells operating at high‐voltage
                      typically suffer from severe capacity fading, known as
                      ‘rollover’ failure. Here, the beneficial impact of
                      Li2CO3 as an electrolyte additive for state‐of‐the‐art
                      carbonate‐based electrolytes, which significantly improves
                      the cycling performance of NCM523 ∥ graphite full‐cells
                      operated at 4.5 V is elucidated. LIB cells using the
                      electrolyte stored at 20 °C (with or without Li2CO3
                      additive) suffer from severe capacity decay due to parasitic
                      transition metal (TM) dissolution/deposition and subsequent
                      Li metal dendrite growth on graphite. In contrast, NCM523
                      ∥ graphite cells using the Li2CO3‐containing electrolyte
                      stored at 40 °C display significantly improved capacity
                      retention. The underlying mechanism is successfully
                      elucidated: The rollover failure is inhibited, as Li2CO3
                      reacts with LiPF6 at 40 °C to in situ form lithium
                      difluorophosphate, and its decomposition products in turn
                      act as ‘scavenging’ agents for TMs (Ni and Co), thus
                      preventing TM deposition and Li metal formation on
                      graphite.},
      cin          = {IEK-12},
      ddc          = {050},
      cid          = {I:(DE-Juel1)IEK-12-20141217},
      pnm          = {122 - Elektrochemische Energiespeicherung (POF4-122)},
      pid          = {G:(DE-HGF)POF4-122},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000611080200001},
      doi          = {10.1002/aenm.202003756},
      url          = {https://juser.fz-juelich.de/record/892524},
}