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@ARTICLE{Soundaraj:1024171,
      author       = {Soundaraj, Pradhyun Veerapanaicker and Dashjav, Enkhtsetseg
                      and Grüner, Daniel and Prünte, Stephan and Dellen,
                      Christian and Tietz, Frank},
      title        = {{I}nfluence of carbon content on the ionic and electronic
                      conductivities of dense {N}a3{V}2({PO}4)3/{C} composites},
      journal      = {Journal of power sources advances},
      volume       = {26},
      issn         = {2666-2485},
      address      = {[Amsterdam]},
      publisher    = {Elsevier ScienceDirect},
      reportid     = {FZJ-2024-02002},
      pages        = {100144 -},
      year         = {2024},
      abstract     = {Sodium vanadium triphosphate (Na3V2(PO4)3, NVP) is a
                      promising cathode material for Na-ion batteries. Due to its
                      intrinsically low electronic conductivity, it is usually
                      mixed or coated with carbon. However, so far there have been
                      no systematic studies on the ionic and electronic
                      conductivity of carbon-coated NVP particles. In this work,
                      NVP with varying carbon contents are prepared. The powders
                      are sintered as single pellets or sandwiched between a solid
                      electrolyte for measurements in an ion blocking and non-ion
                      blocking configuration. In these two different
                      configurations, two different electrodes are attached and
                      several electrochemical characterization techniques are
                      applied such as impedance spectroscopy, chronoamperometry,
                      and four-point measurements. The NVP/C composites with
                      carbon content >0.1 $wt\%$ show a high degree of
                      densification and an amorphous carbon network. The
                      conductivity of NVP in composites with carbon content <0.1
                      $wt\%$ shows dominating ionic conduction with an average
                      value of ∼2 × 10−6 S cm−1. NVP/C samples with carbon
                      contents >0.1 $wt\%$ show a dominance of electronic
                      conduction in the range of 0.01–0.2 mS cm−1 because of
                      the percolated carbon network at the grain boundaries. The
                      ionic conductivity, however, remains almost constant in the
                      same order of magnitude (∼6 × 10−6 S cm−1).},
      cin          = {IEK-1 / IEK-2},
      ddc          = {621.3},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-2-20101013},
      pnm          = {1222 - Components and Cells (POF4-122)},
      pid          = {G:(DE-HGF)POF4-1222},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001206190600001},
      doi          = {10.1016/j.powera.2024.100144},
      url          = {https://juser.fz-juelich.de/record/1024171},
}