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@ARTICLE{Schalenbach:904178,
      author       = {Schalenbach, Maximilian and Durmus, Yasin Emre and
                      Robinson, Shay Alexander and Tempel, Hermann and Kungl, Hans
                      and Eichel, Rüdiger-A.},
      title        = {{P}hysicochemical {M}echanisms of the {D}ouble-{L}ayer
                      {C}apacitance {D}ispersion and {D}ynamics: {A}n {I}mpedance
                      {A}nalysis},
      journal      = {The journal of physical chemistry / C},
      volume       = {125},
      number       = {10},
      issn         = {1932-7447},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {FZJ-2021-05748},
      pages        = {5870 - 5879},
      year         = {2021},
      abstract     = {Gold, as the noblest metal, is an appropriate model
                      electrode to study electrochemical double layers. This study
                      examines the frequency dispersion of the double layer of
                      polished gold electrodes in perchloric acid with impedance
                      spectroscopy under amplitude, electrolyte concentration, and
                      potential variation. The dynamic perturbation of the double
                      layer equilibrium by impedance measurements shows a constant
                      phase (CP) response (phase angle of approximately −75°),
                      which is responsible for a frequency dispersion of the
                      capacitance. The response is almost independent of the
                      excitation amplitude, for which the CP behavior is ascribed
                      to resistive–capacitive (RC) contributions of the electric
                      field-driven ion separation instead of the previously
                      reported diffusion-limited adsorption processes. The RC
                      character of the double layer in combination with the
                      electrolyte resistance is accompanied by a relaxation that
                      can damp the ion movement and the related ion separation. At
                      the relaxation frequency, the capacitance is found to be
                      independent of the electrolyte concentration, which is
                      attributed to a constant ratio of the contributions of
                      damped ion movement and dielectric polarization of water
                      molecules.},
      cin          = {IEK-9},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IEK-9-20110218},
      pnm          = {1232 - Power-based Fuels and Chemicals (POF4-123)},
      pid          = {G:(DE-HGF)POF4-1232},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000631433100046},
      doi          = {10.1021/acs.jpcc.0c11335},
      url          = {https://juser.fz-juelich.de/record/904178},
}