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@PHDTHESIS{Du:152374,
      author       = {Du, Linnan},
      title        = {{S}tudy on the {C}omplex {L}i-{N}-{H} {H}ydrogen {S}torage
                      {S}ystem},
      volume       = {211},
      school       = {Universität Bochum},
      type         = {Dr.},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {FZJ-2014-01966},
      isbn         = {978-3-89336-952-2},
      series       = {Schriften des Forschungszentrums Jülich Reihe Energie $\&$
                      Umwelt / Energy $\&$ Environment},
      pages        = {132 S.},
      year         = {2014},
      note         = {Universität Bochum, Diss., 2013},
      abstract     = {Nowadays the developments of clean energy technologies
                      become more and more necessary andimportant.
                      Hydrogen-powered vehicles are a promising alternative to the
                      current fossil fuel basedvehicle infrastructure. However, so
                      far there is still no hydrogen storage material which can
                      fit thestandards for an on-board hydrogen storage system. On
                      this background, this work deals with the development of a
                      hydrogen storage material. The focus isput on the Lithium
                      amide + Lithium hydride (LiNH$_{2}$+LiH) hydrogen storage
                      system because of its hightheoretical capacity and
                      relatively low desorption temperature. Moreover, Lithium
                      amide + Magnesiumhydride (LiNH$_{2}$+MgH$_{2}$) as an
                      alternative system was also briefly studied. The aims of
                      this work are to achieve a deeper understanding of the
                      reaction mechanism with the help ofmicrostructural and
                      thermodynamic studies, building a model to describe the
                      sorption process and thento improve the system properties.
                      As the desorption from LiNH$_{2}$ particles is the first
                      step of the desorption process of the LiNH$_{2}$+LiH system,
                      the properties and sorption behavior of LiNH$_{2}$ sample
                      materials were studied separately first. Sothe work in this
                      thesis can be mainly divided into two parts: LiNH$_{2}$
                      samples and LiNH$_{2}$+LiH samples. Inorder to activate the
                      sample materials, both dry ball milling and wet ball milling
                      (with tetrahydrofuran)methods were used. Boron nitride was
                      mainly applied as catalyst. Furthermore, titanium
                      tetrachloride was also used as an alternative additive. The
                      sorption behaviors were studied with the help of avolumetric
                      and a gravimetric system. Further investigation methods
                      include X-ray Diffraction (XRD) method, Scanning Electron
                      Microscope (SEM), Brunauer–Emmett–Teller (BET) method,
                      DifferentialThermal Analysis (DTA)/ Thermo Gravimetric
                      Analysis (TGA)/ Mass Spectrometry (MS), and others.The
                      results obtained in this work show that no obvious
                      microstructure differences have been foundbetween the wet
                      ball milled and dry ball milled samples. Boron nitride (BN)
                      as additive has improved therecyclability of the
                      LiNH$_{2}$+LiH system clearly. The activation energy of the
                      desorption reaction of wetanddry ball milled samples have
                      been reduced with BN as additive. BN did neither influence
                      thecrystallite sizes nor the particle sizes of both of the
                      LiNH$_{2}$ and LiNH$_{2}$+LiH as milled samples clearly.
                      However, it has been found that BN can stabilize the
                      crystallite sizes of LiNH$_{2}$+LiH samples during thehigh
                      temperature desorption and absorption processes. Titanium
                      tetrachloride as alternative additive had also improved the
                      recyclability of LiNH$_{2}$+LiH samples. However, the
                      resulted system pressure wasnot as high as that of the
                      LiNH$_{2}$+LiH samples with BN as additive. BN did not
                      improve the recyclability ofthe LiNH$_{2}$+MgH$_{2}$
                      samples. Apart from the experimental work, a model to
                      describe the desorption behavior of LiNH$_{2}$ particles was
                      developed to understand the desorption process.},
      keywords     = {Dissertation (GND)},
      cin          = {IEK-1},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {122 - Power Plants (POF2-122)},
      pid          = {G:(DE-HGF)POF2-122},
      typ          = {PUB:(DE-HGF)11},
      url          = {https://juser.fz-juelich.de/record/152374},
}