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@ARTICLE{Brmann:902902,
      author       = {Bärmann, Peer and Winter, Martin and Gonzalez-Julian,
                      Jesus},
      collaboration = {Placke, Tobias},
      title        = {{S}olvent {C}o‐{I}ntercalation‐{I}nduced {A}ctivation
                      and {C}apacity {F}ade {M}echanism of
                      {F}ew‐/{M}ulti‐{L}ayered {MX}enes in {L}ithium {I}on
                      {B}atteries},
      journal      = {Small},
      volume       = {17},
      number       = {47},
      issn         = {1613-6810},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2021-04657},
      pages        = {2104130 -},
      year         = {2021},
      abstract     = {MXenes attract tremendous research efforts since their
                      discovery in 2011 due to their unique physical and chemical
                      properties, allowing for application in various fields. One
                      of them is electrochemical energy storage due to their
                      pseudocapacitive (=redox) behavior, high electronic
                      conductivity, and charge storage versatility regarding the
                      cationic species (e.g., Li+). MXenes typically display
                      stable charge/discharge cycling behavior over hundreds of
                      cycles in numerous electrolytes, however, a drastic loss of
                      reversible capacity is detectable during the initial cycles.
                      Furthermore, an electrochemical “activation” is also
                      reported in the literature, especially for free-standing
                      electrodes. Here, these electrochemical phenomena are
                      investigated by electrochemical and analytical means to
                      decipher the responsible mechanism by comparing few-layered
                      and multi-layered Ti3C2Tx. A change in the pseudocapacitive
                      behavior of MXenes during cycling can be explained by in
                      situ X-ray diffraction studies, revealing solvent
                      co-intercalation in the first cycle for the morphologically
                      different MXenes. This co-intercalation is responsible for
                      the capacity decay detected in the first cycles and is also
                      responsible for the ongoing “activation” occurring in
                      later cycles.},
      cin          = {IEK-1 / IEK-12},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-12-20141217},
      pnm          = {1221 - Fundamentals and Materials (POF4-122)},
      pid          = {G:(DE-HGF)POF4-1221},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:34636147},
      UT           = {WOS:000705988100001},
      doi          = {10.1002/smll.202104130},
      url          = {https://juser.fz-juelich.de/record/902902},
}