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@ARTICLE{Chan:20180,
      author       = {Chan, W.K. and Haverkate, L.A. and Borghols, W.J.H. and
                      Wagemaker, M. and Picken, S.J. and van Exk, E.R.H. and
                      Kentgens, A.P.M. and Johnson, M.R. and Kearley, G.J.Ü and
                      Mulder, F.M.},
      title        = {{D}irect {V}iew on {N}anoionic {P}roton {M}obility},
      journal      = {Advanced functional materials},
      volume       = {21},
      issn         = {1616-301X},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {PreJuSER-20180},
      pages        = {1364 - 1374},
      year         = {2011},
      note         = {Financial support for ISIS beam time was obtained from the
                      Netherlands Organization for Scientific Research (NWO). NWO
                      is furthermore thanked for financial support of the
                      solid-state NMR facility for advanced materials science at
                      the Radboud University in Nijmegen. This article is the
                      result of joint research in the Delft Research Centre for
                      Sustainable Energy and the 3TU. Centre for Sustainable
                      Energy Technologies. J. van Os, G. Janssen, and H. Janssen
                      are acknowledged for technical support with the NMR
                      measurements. The Institute Laue-Langevin is acknowledged
                      for QENS measurement time on IN5.},
      abstract     = {The field of nanoionics is of great importance for the
                      development of superior materials for devices that rely on
                      the transport of charged ions, like fuel cells, batteries,
                      and sensors. Often nanostructuring leads to enhanced ionic
                      mobilities due to the induced space-charge effects. Here
                      these large space-charge effects occurring in composites of
                      the proton-donating solid acid CsHSO4 and the
                      proton-accepting TiO2 or SiO2 are studied. CsHSO4 is chosen
                      for this study because it can operate effectively as a
                      fuel-cell electrolyte at elevated temperature while its
                      low-temperature conductivity is increased upon
                      nanostructuring. The composites have a negative enthalpy of
                      formation for defects involving the transfer of protons from
                      the acid to the acceptor. Very high defect densities of up
                      to $10\%$ of the available sites are observed by neutron
                      diffraction. The effect on the mobility of the protons is
                      observed directly using quasielastic neutron scattering and
                      nuclear magnetic resonance spectroscopy. Surprisingly large
                      fractions of up to $25\%$ of the hydrogen ions show
                      orders-of-magnitude enhanced mobility in the nanostructured
                      composites of TiO2 or SiO2, both in crystalline CsHSO4 and
                      an amorphous fraction.},
      keywords     = {J (WoSType)},
      cin          = {PGI-4 / JCNS (München) ; Jülich Centre for Neutron
                      Science JCNS (München) ; JCNS-FRM-II / JCNS-2},
      ddc          = {620},
      cid          = {I:(DE-Juel1)PGI-4-20110106 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-2-20110106},
      pnm          = {Grundlagen für zukünftige Informationstechnologien /
                      Großgeräte für die Forschung mit Photonen, Neutronen und
                      Ionen (PNI)},
      pid          = {G:(DE-Juel1)FUEK412 / G:(DE-Juel1)FUEK415},
      experiment   = {EXP:(DE-MLZ)External-20140101},
      shelfmark    = {Chemistry, Multidisciplinary / Chemistry, Physical /
                      Nanoscience $\&$ Nanotechnology / Materials Science,
                      Multidisciplinary / Physics, Applied / Physics, Condensed
                      Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000289638500003},
      doi          = {10.1002/adfm.201001933},
      url          = {https://juser.fz-juelich.de/record/20180},
}