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@ARTICLE{Bernges:907893,
      author       = {Bernges, Tim and Hanus, Riley and Wankmiller, Bjoern and
                      Imasato, Kazuki and Lin, Siqi and Ghidiu, Michael and
                      Gerlitz, Marius and Peterlechner, Martin and Graham, Samuel
                      and Hautier, Geoffroy and Pei, Yanzhong and Hansen, Michael
                      Ryan and Wilde, Gerhard and Snyder, G. Jeffrey and George,
                      Janine and Agne, Matthias and Zeier, Wolfgang G.},
      title        = {{C}onsidering the {R}ole of {I}on {T}ransport in
                      {D}iffuson‐{D}ominated {T}hermal {C}onductivity},
      journal      = {Advanced energy materials},
      volume       = {12},
      number       = {22},
      issn         = {1614-6832},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2022-02272},
      pages        = {2200717},
      year         = {2022},
      abstract     = {Next-generation thermal management requires the development
                      of low lattice thermal conductivity materials, as observed
                      in ionic conductors. For example, thermoelectric efficiency
                      is increased when thermal conductivity is decreased.
                      Detrimentally, high ionic conductivity leads to
                      thermoelectric device degradation. Battery safety and design
                      also require an understanding of thermal transport in ionic
                      conductors. Ion mobility, structural complexity, and
                      anharmonicity have been used to explain the thermal
                      transport properties of ionic conductors. However, thermal
                      and ionic transport are rarely discussed in direct
                      comparison. Herein, the ionic conductivity of Ag+
                      argyrodites is found to change by orders of magnitude
                      without altering the thermal conductivity. Thermal
                      conductivity measurements and two-channel lattice dynamics
                      modeling reveal that the majority of Ag+ vibrations have a
                      non-propagating diffuson-like character, similar to
                      amorphous materials. It is found that high ionic mobility is
                      not a requirement for diffuson-mediated transport. Instead,
                      the same bonding and structural traits that can lead to fast
                      ionic conduction also lead to diffuson-mediated transport.
                      Bridging the fields of solid-state ionics and thermal
                      transport, it is proposed that a vibrational perspective can
                      lead to new design strategies for functional ionic
                      conducting materials. As a first step, the authors relate
                      the so-called Meyer–Neldel behavior in ionic conductors to
                      phonon occupations.},
      cin          = {IEK-12},
      ddc          = {050},
      cid          = {I:(DE-Juel1)IEK-12-20141217},
      pnm          = {1221 - Fundamentals and Materials (POF4-122)},
      pid          = {G:(DE-HGF)POF4-1221},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000787726900001},
      doi          = {10.1002/aenm.202200717},
      url          = {https://juser.fz-juelich.de/record/907893},
}