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@PHDTHESIS{Lan:897113,
author = {Lan, Tu},
title = {{I}nfiltrated {P}ositive {E}lectrodes for
{A}ll-{S}olid-{S}tate {S}odium {B}atteries},
volume = {551},
school = {RWTH Aachen},
type = {Dissertation},
address = {Jülich},
publisher = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
reportid = {FZJ-2021-03611},
isbn = {978-3-95806-576-5},
series = {Schriften des Forschungszentrums Jülich. Reihe Energie
$\&$ Umwelt / Energy $\&$ Environment},
pages = {vi, 104 S.},
year = {2021},
note = {Dissertation, RWTH Aachen, 2020},
abstract = {All-solid-state batteries (ASSBs) are regarded as promising
candidates for nextgeneration energy storage systems due to
several superior properties in comparison to
state-of-the-art batteries using liquid electrolytes. ASSBs
have advantages with respect to no-leaking electrolytes,
wider temperature window, and potentially higher volumetric
energy density than those batteries using liquid
electrolyte. In addition, ceramic ion-conducting oxides, as
electrolyte materials, offer further benefit from their high
conductivity, as well as good mechanical, chemical, and
thermodynamic stability. Though great achievements have been
made in the development of all-solid-state batteries, there
are still a number of problems to be solved, especially with
respect to the positive electrodes. The rigid nature of
solid-state electrolyte materials restricts the
electrolyte-electrode contact and causes problems during the
fabrication of components. In the positive electrodes,
contacts between randomly-arranged grains of Na-ion
conductors and electrode active materials are not efficient
for both ion conduction and electrochemical reaction. These
rigid contacts are further damaged by volume changes of
electrode active materials during electrochemical cycling.
These electrode problems above are reported to be more
severe in Na-based ASSBs (Na-ASSBs) due to the larger ionic
radius of Na$^{+}$ and thus larger volume changes of the
electrode materials. In order to solve the problems
associated with the positive electrodes of Na-ASSBs, a new
electrode design is needed together with a practical
preparation method. In this thesis, Na-ASSBs have been built
using NaSICON-type
Na$_{3.4}$Zr$_{2}$Si$_{2.4}$P$_{0.6}$O$_{12}$ as the
electrolyte material. A material with similar structure as
the electrolyte, Na$_{3}$V$_{2}$P$_{3}$O$_{12}$, was chosen
as the positive electrode material.
Na$_{3}$V$_{2}$P$_{3}$O$_{12}$ has been widely studied as
the electrode material for batteries with liquid
electrolyte, but only a few unsuccessful attempts have been
made to apply the material in ASSBs.},
cin = {IEK-1},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {1221 - Fundamentals and Materials (POF4-122)},
pid = {G:(DE-HGF)POF4-1221},
typ = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
url = {https://juser.fz-juelich.de/record/897113},
}