% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@INPROCEEDINGS{Ma:890958,
      author       = {Ma, Qianli and Tsai, Chih-Long and Lan, Tu and Tietz, Frank
                      and Guillon, Olivier},
      title        = {{R}oadmap shifting? {S}ome technological advances of
                      solid-state sodium batteries compared to their lithium
                      counterpart},
      reportid     = {FZJ-2021-01274},
      year         = {2021},
      abstract     = {Roadmap shifting? Some technological advances of
                      solid-state sodium batteries compared to their lithium
                      counterpartQianli Ma1, Chih-Long Tsai1, Tu Lan1, Frank
                      Tietz1, Olivier Guillon1,2 1. Forschungszentrum Jülich
                      GmbH, Institute of Energy and Climate Research, Materials
                      Synthesis and Processing (IEK-1), 52425 Jülich, Germany2.
                      Jülich Aachen Research Alliance, JARA-Energy, 52425
                      Jülich, Germanye-mail address: q.ma@fz-juelich.deCompared
                      to their lithium counterpart, solid-state sodium battery
                      (SSNB) is regarded to have similar properties but is a much
                      less mature technology because it is much less addressed.
                      Besides their well-known natural endowment like high element
                      abundance, low price etc., in the present study, some
                      technological advantages of SSNBs are discussed in
                      comparison with solid-state lithium batteries (SSLBs). Very
                      recently, Na3.4Zr2Si2.4P0.6O12 (NZSP) ceramics were reported
                      to have total conductivity of 5 × 10-3 S cm-1 at 25 °C,
                      higher than previously reported polycrystalline Na-ion
                      conductors.[1] Inhibition of dendrite growth in SSLBs and
                      SSNBs has long been a challenge to the field. In the present
                      study, with simply sticking sodium metal to NZSP ceramic
                      pellets and without external pressure applied during
                      operation, the critical current density of Na/NZSP/Na
                      symmetric SSNBs reaches 9 mA cm-2 at 25°C. The cells can be
                      stably operated at areal capacity of 5 mAh cm-2 (per half
                      cycle, with 1.0 mA cm-2) at 25°C for 300 h in a
                      galvanostatic cycling measurement without any dendrite
                      formation. This critical current density is much higher than
                      those of existing SSLBs operated at similar conditions. The
                      influence of metal self-diffusion on the dendritic plating
                      is the main explanation of the high dendrite tolerance of
                      SSNBs. In this report, the inter-ceramic contact problems in
                      the cathode are also solved by combining the infiltration of
                      a porous electrolyte scaffold by precursor solution with in
                      situ synthesis of electrode active material.[2] The
                      resulting full cells using Na3V2P3O12, NZSP and Na as the
                      positive electrode, electrolyte and negative electrode
                      materials, respectively, can be stably operated with a
                      capacity of 0.55 mAh cm-2 at high rate of 0.5 mA cm-2. This
                      is the first successful example showing that contact
                      problems between rigid electrolyte and electrode materials
                      can be solved without using any soft phase (liquid,
                      polymers, ionic liquids etc.) as an accommodation or wetting
                      medium. Since SSNBs have these advantages while SSLBs have
                      not, the future roadmap of the development of solid-state
                      batteries may shift from SSLBs towards SSNBs despite the
                      higher molar weight of the sodium compounds in comparison to
                      the Li analogues.[1] Q. Ma, C.-L. Tsai, X.-K. Wei, M.
                      Heggen, F. Tietz, J. T. S. Irvine, J. Mater. Chem. A, 2019,
                      7, 7766–7776.[2] T. Lan, C.-L. Tsai, F. Tietz, X.-K. Wei,
                      M.Heggen, R. E. Dunin-Borkowski, R.Wang, Y. Xiao, Q. Ma, O.
                      Guillon, Nano Energy, 2019, 65, 104040.},
      month         = {Jan},
      date          = {2021-01-13},
      organization  = {electronicallyInternational Sodium
                       Battery Symposium 2021, online
                       (Germany), 13 Jan 2021 - 14 Jan 2021},
      subtyp        = {After Call},
      cin          = {IEK-1},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {122 - Elektrochemische Energiespeicherung (POF4-122)},
      pid          = {G:(DE-HGF)POF4-122},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/890958},
}