% 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”.
@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},
}