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@ARTICLE{Bauelos:187681,
      author       = {Bañuelos, José Leobardo and Feng, Guang and Fulvio,
                      Pasquale F. and Li, Song and Rother, Gernot and Arend,
                      Nikolas and Faraone, Antonio and Dai, Sheng and Cummings,
                      Peter T. and Wesolowski, David J.},
      title        = {{T}he influence of a hierarchical porous carbon network on
                      the coherent dynamics of a nanoconfined room temperature
                      ionic liquid: {A} neutron spin echo and atomistic simulation
                      investigation},
      journal      = {Carbon},
      volume       = {78},
      issn         = {0008-6223},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2015-01306},
      pages        = {415 - 427},
      year         = {2014},
      abstract     = {The molecular-scale dynamic properties of the room
                      temperature ionic liquid (RTIL) 1-butyl-3-methylimidazolium
                      bis(trifluoromethylsulfonyl)imide, or [C4mim+][Tf2N−],
                      confined in hierarchical microporous–mesoporous carbon,
                      were investigated using neutron spin echo (NSE) and
                      molecular dynamics (MD) simulations. Both NSE and MD reveal
                      pronounced slowing of the overall collective dynamics,
                      including the presence of an immobilized fraction of RTIL at
                      the pore wall, on the time scales of these approaches. A
                      fraction of the dynamics, corresponding to RTIL inside 0.75
                      nm micropores located along the mesopore surfaces, are
                      faster than those of RTIL in direct contact with the walls
                      of 5.8 nm and 7.8 nm cylindrical mesopores. This behavior is
                      ascribed to the near-surface confined-ion density
                      fluctuations resulting from the ion–ion and ion–wall
                      interactions between the micropores and mesopores as well as
                      their confinement geometries. Strong micropore–RTIL
                      interactions result in less-coordinated RTIL within the
                      micropores than in the bulk fluid. Increasing temperature
                      from 296 K to 353 K reduces the immobilized RTIL fraction
                      and results in nearly an order of magnitude increase in the
                      RTIL dynamics. The observed interfacial phenomena underscore
                      the importance of tailoring the surface properties of porous
                      carbons to achieve desirable electrolyte dynamic behavior,
                      since this impacts the performance in applications such as
                      electrical energy storage devices.},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1 /
                      ICS-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)ICS-1-20110106},
      pnm          = {54G - JCNS (POF2-54G24)},
      pid          = {G:(DE-HGF)POF2-54G24},
      experiment   = {EXP:(DE-Juel1)SNS-NSE-20150203},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000341463900044},
      doi          = {10.1016/j.carbon.2014.07.020},
      url          = {https://juser.fz-juelich.de/record/187681},
}