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@ARTICLE{Zhang:885752,
      author       = {Zhang, Yufan and Ye, Ting and Chen, Ming and Goodwin,
                      Zachary A. H. and Feng, Guang and Huang, Jun and Kornyshev,
                      Alexei A.},
      title        = {{E}nforced {F}reedom: {E}lectric‐{F}ield‐{I}nduced
                      {D}eclustering of {I}onic‐{L}iquid {I}ons in the
                      {E}lectrical {D}ouble {L}ayer},
      journal      = {Energy $\&$ Environmental Materials},
      volume       = {3},
      number       = {3},
      issn         = {2575-0356},
      address      = {Hoboken},
      publisher    = {Wiley},
      reportid     = {FZJ-2020-04064},
      pages        = {414 - 420},
      year         = {2020},
      abstract     = {Ions in the bulk of solvent‐free ionic liquids bind into
                      ion pairs and clusters. The competition between the
                      propensity of ions to stay in a bound state, and the
                      reduction of the energy when unbinding in electric field,
                      determines the portion of free ions in the electrical double
                      layer. We present the simplest possible mean‐field theory
                      to study this effect. “Cracking” of ion pairs into free
                      ions in electric field is accompanied by the change of the
                      dielectric response of the ionic liquid. The predictions
                      from the theory are verified and further explored by
                      molecular dynamics simulations. A particular finding of the
                      theory is that the differential capacitance vs potential
                      curve displays a bell shape, despite the low concentration
                      of free charge carriers, because the dielectric response
                      reduces the threshold concentration for the bell‐ to
                      camel‐shape transition. The presented theory does not take
                      into account overscreening and oscillating charge
                      distributions in the electrical double layer. But in spite
                      of the simplicity of the model, its findings demonstrate a
                      clear physical effect: a preference to be a charged monopole
                      rather than a dipole (or higher order multipole) in strong
                      electric field.},
      cin          = {IEK-13},
      ddc          = {333.7},
      cid          = {I:(DE-Juel1)IEK-13-20190226},
      pnm          = {113 - Methods and Concepts for Material Development
                      (POF3-113)},
      pid          = {G:(DE-HGF)POF3-113},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000565990500001},
      doi          = {10.1002/eem2.12107},
      url          = {https://juser.fz-juelich.de/record/885752},
}