% 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{Zngler:1023118,
author = {Zängler, Wibke Victoria},
othercontributors = {Wessling, Matthias and Seger, Brian},
title = {{E}lectrochemical hydrogen compression toward operation in
hydrogen distribution systems},
volume = {60},
school = {Rheinisch-Westfälische Technische Hochschule Aachen},
type = {Dissertation},
address = {Aachen},
publisher = {Aachener Verfahrenstechnik},
reportid = {RWTH-2025-10510},
series = {Aachener Verfahrenstechnik series. AVT.CVT - chemical
process engineering},
pages = {1 Online-Ressource : Illustrationen},
year = {2025},
note = {Veröffentlicht auf dem Publikationsserver der RWTH Aachen
University 2026; Dissertation, Rheinisch-Westfälische
Technische Hochschule Aachen, 2025},
abstract = {Hydrogen will be a key component of a zero-emission energy
system, enhancing resilience and aiding in decarbonizing
hard-to-abate sectors. For mid-term hydrogen distribution
and storage, blending hydrogen into the natural gas grid
presents a viable option that necessitates decentralized
compression and separation technologies, as hydrogen must be
compressed to achieve competitive volumetric energy density.
Existing technologies, such as mechanical compression and
pressure swing adsorption, are not well suited for
distributed hydrogen compression and separation and often
entail high footprints and capital costs. Electrochemical
hydrogen compression is an evolving technology combining
separation and compression, delivering high hydrogen purity
and operational flexibility. This thesis aims to advance
electrochemical hydrogen compression applicability in
natural gas mixtures by increasing process robustness
against impurities and reducing costs through innovative
reactor design. Low- and high-temperature electrochemical
hydrogen compressor (EHC) systems are compared in this work,
assessing their performance and poisoning tolerance in the
presence of single impurities (CO2, CO, NH3, H2S) at natural
gas concentrations. In the low-temperature EHC, detrimental
performance reductions due to impurities were observed. With
impurity/hydrogen mixtures, the high-temperature EHC
demonstrated stable operation, minimal potential increase,
and higher product gas purity compared to the
low-temperature EHC. However, diluting the H2S/ hydrogen
feed with methane resulted in severe potential oscillations.
Several mitigation strategies were implemented to address
H2S poisoning in the high-temperature EHC, with repetitive
cyclic voltammetry proving the most effective and efficient.
Furthermore, an innovative tubular reactor design was
developed alongside a 2D numerical model. This work
established a proof-of-concept for the tubular EHC design.
The modelling results indicated the process competitiveness
of EHC technology compared to state-of-the-art separation
and compression methods, highlighting its potential for
integration into future hydrogen distribution systems. This
research demonstrates the capability of high-temperature
EHCs to simultaneously compress and separate hydrogen from
natural gas mixtures containing critical impurities. By
developing innovative reactor designs and demonstrating
effective mitigation strategies for poisoning effects, this
work advances EHC technology, paving the way for its
integration into hydrogen distribution systems.},
cin = {416110},
ddc = {620},
cid = {$I:(DE-82)416110_20140620$},
pnm = {BMBF 03ZU1115CA - HyInnoSep (03ZU1115CA) / EFRE 0500077 -
ELECTRA - Kompetenzzentrum Industrielle Elektrochemie
(0500077)},
pid = {G:(BMBF)03ZU1115CA / G:(EFRE)0500077},
typ = {PUB:(DE-HGF)11 / PUB:(DE-HGF)3},
doi = {10.18154/RWTH-2025-10510},
url = {https://publications.rwth-aachen.de/record/1023118},
}
guest ::