Article
Engineering, Chemical
Dominik Schaefer, Larissa Queda, Volker Nischwitz, Qingping Fang, Ludger Blum
Summary: The carryover characteristics of contaminants from the feed-water into the steam phase were evaluated for different types of steam generators supplying feed gases to solid-oxide electrolysis stacks. The study found that steam-soluble species like boric acid completely transfer into the steam phase, while alloying metal species are carried over into the steam during unstable evaporation in the steam generators. The gas preheater may cause the release of silicon into the steam phase under realistic operation conditions.
Article
Chemistry, Multidisciplinary
Beom-Kyeong Park, Dalton Cox, Scott A. Barnett
Summary: The study investigates degradation mechanisms of Ni-YSZ fuel electrodes in SOECs through life testing at different steam contents, showing that GDC infiltrant can reduce electrode polarization resistance and provide more stable electrode polarization under various conditions.
Article
Energy & Fuels
Stephanie E. Wolf, Vaibhav Vibhu, Eric Troester, Izaak C. Vinke, Rudiger-A Eichel, L. G. J. (Bert) de Haart
Summary: This study conducted long-term stability tests on high-temperature solid oxide electrolysis cells under steam and co-electrolysis conditions to understand the degradation process, where it was found that the degradation rate was higher at 800 degrees Celsius compared to 750 degrees Celsius under steam electrolysis conditions, while a lower degradation rate was observed during co-electrolysis operation. Post-test analyses using SEM-EDX and XRD revealed delamination of LSC and Ni depletion and agglomeration on the fuel electrode side.
Article
Chemistry, Physical
Zhe Zhao, Shuai Tang, Zhongbo Liu, Longsheng Cao, Mojie Cheng, Zhigang Shao
Summary: Efficient and durable solid oxide steam electrolysis was achieved by constructing an active La0.8Sr0.2CoO3-$/Gd0.2Ce0.8O2-$ heterointerface in the air electrode using a simple co-impregnation method. The resulting hetero-structured air electrode exhibited outstanding activity for the oxygen evolution reaction, with an exchange current density 69 times higher than that of the traditional LSM-YSZ. The heterostructured cell demonstrated excellent long-term stability for steam electrolysis operation and durability for charge-discharge cycles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Chemistry, Physical
Saheli Biswas, Gurpreet Kaur, Gary Paul, Sarbjit Giddey
Summary: The major technologies for green hydrogen production are PEM and SOE. While PEM technology is being commercialized at MW scale, SOE technology is still under development at kW scale and higher costs. SOE has the potential to reduce energy input by up to 30% for hydrogen production by utilizing low-cost thermal energy. The search for alternative cathode materials for SOE is ongoing, and nanoengineered materials synthesized using infiltration and exsolution techniques show promise. Techno-economic analysis is required for the commercialization of these materials in SOE.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Vaibhav Vibhu, Izaak C. Vinke, Ruediger-A. Eichel, L. G. J. (Bert) de Haart
Summary: In this study, Ni-free LSM-based perovskite oxides were considered as alternative fuel electrodes to address the severe degradation of conventional Ni-YSZ fuel electrodes. The properties of LSM were analyzed and electrolyte-supported single cells were fabricated for electrochemical performance evaluation. The results showed that the cell performance of LSM and LSM + GDC fuel electrodes was superior to that of LSM + YSZ fuel electrodes.
Review
Energy & Fuels
Gyubin Min, Saeyoung Choi, Jongsup Hong
Summary: As the world moves towards a hydrogen society, solid oxide electrolysis cell systems are gaining attention for their thermodynamic advantages. This study reviews the thermal aspects of these systems and introduces standardized thermodynamic indices. The analysis suggests that system thermal integration and operating conditions must consider external thermal energy consumption.
Article
Chemistry, Physical
Hirofumi Sumi, Hiroyuki Shimada, Konosuke Watanabe, Yuki Yamaguchi, Katsuhiro Nomura, Yasunobu Mizutani, Yuji Okuyama
Summary: This study investigates the effect of polarization resistances on current leakage and the distribution of relaxation times (DRT) analysis of electrochemical impedance spectra (EIS) for solid oxide cells (SOCs) with GDC electrolyte and protonic ceramic cells (PCCs) with BZYb electrolyte. The results show that the polarization resistances increase with increasing current density in SOC with GDC electrolyte, but exhibit the opposite tendency in PCC with BZYb electrolyte. This suggests that the effect of current leakage on polarization resistance is related to the conductivity of the electrolyte.
ACS APPLIED ENERGY MATERIALS
(2023)
Review
Energy & Fuels
Mohsen Fallah Vostakola, Hasan Ozcan, Rami S. El-Emam, Bahman Amini Horri
Summary: This review paper examines the recent advancements in hydrogen generation via high-temperature steam electrolysis using solid oxide electrolysis cells powered by nuclear thermal energy. The paper discusses the processes of proton and oxygen-ion conducting solid oxide electrolysis. It covers a wide range of topics such as material development for various components, degradation mechanisms, and measures to mitigate degradation.
Article
Materials Science, Ceramics
Shuai Tang, Zhe Zhao, Chao Zhang, Kun Wang, Zhigang Shao
Summary: This study reports a high-performance oxygen electrode LNF-LDC nano-composite for solid oxide electrolysis cells (SOECs) driven by renewable energy to produce hydrogen. Compared with traditional oxygen electrodes, the LNF-LDC nano-composite has more oxygen vacancies and higher oxygen mobility, providing higher electrochemical performance.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Guangdong Li, Yunjie Gou, Rongzheng Ren, Chunming Xu, Jinshuo Qiao, Wang Sun, Zhenhua Wang, Kening Sun
Summary: A novel tubular SOEC with YSZ and Ni-doped Sr(Ti, Fe)O3 as support and fuel electrode respectively has been proposed and fabricated. The as-fabricated cell showed the ability to electrolyze steam under a hydrogen-free atmosphere and exhibited stable performance during the start-pause cycle test. This work highlights the potential of SOEC devices in future power-to-hydrogen technology.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
P. Kazempoor, J. Asadi, R. J. Braun
Summary: This study addresses the challenges in modeling solid oxide electrolysis cells (SOECs) with feed gases containing low steam-to-CO2 concentration ratios. The common approach of neglecting the CO2 electrochemical reduction reaction in SOEC modeling is validated against experimental results. The validation results show that the model deviation with experimental data increases at certain current densities. It is also shown that when the steam flow supplied to the cell is high enough to support the water-gas shift reaction, the electrochemical reaction involving CO2 can be neglected.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Electrochemistry
Daniel B. Drasbaek, Peter Blennow, Thomas Heiredal-Clausen, Jeppe Rass-Hansen, Giovanni Perin, Jens V. T. Hogh, Anne Hauch
Summary: In this study, the degradation and failure mechanisms in a SOEC stack were identified using electrochemical impedance spectroscopy (EIS). By quantifying different electrochemical contributions and plotting the data in a degradation space format, the cause of degradation was successfully determined.
Article
Chemistry, Physical
P. Prasopchokkul, P. Seeharaj, P. Kim-Lohsoontorn
Summary: The study investigates the effect of substituting part of BSCF with higher valence Ta5+ on its chemical stability and electrochemical performance. It shows that doping with Ta5+ enhances both the chemical stability and electrochemical performance of BSCF. BSCFTa0.10 exhibits the best performance, with improved electronic conductivity and balanced ionic and electronic conductivity in the anode.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
E. Da Rosa Silva, G. Sassone, M. Prioux, M. Hubert, B. Morel, J. Laurencin
Summary: A physical-based model has been developed and validated to understand the relationship between solid oxide cell response and electrode reaction mechanisms. This model combines three length-scale modules to compute reaction rates, current densities, and gas composition. An experimental setup was developed to measure local polarization curves and showed good agreement with simulated data. The validated model was used to analyze cell operation in electrolysis and fuel cell modes, investigating the activated reaction pathways along the cell length.
JOURNAL OF POWER SOURCES
(2023)
Article
Electrochemistry
Josef Schefold, Annabelle Brisse, Hendrik Poepke
ELECTROCHIMICA ACTA
(2015)
Article
Electrochemistry
Jaroslaw Sar, Josef Schefold, Annabelle Brisse, Elisabeth Djurado
ELECTROCHIMICA ACTA
(2016)
Article
Chemistry, Physical
Alexander Surrey, Christian Bonatto Minella, Nina Fechler, Markus Antonietti, Hans-Joachim Grafe, Ludwig Schultz, Bernd Rellinghaus
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2016)
Article
Electrochemistry
G. Rinaldi, S. Diethelm, E. Oveisi, P. Burdet, J. Van Herle, D. Montinaro, Q. Fu, A. Brisse
Article
Chemistry, Physical
Josef Schefold, Annabelle Brisse, Hendrik Poepke
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2017)
Article
Microscopy
Alexander Surrey, Ludwig Schultz, Bernd Rellinghaus
Editorial Material
Multidisciplinary Sciences
Alexander Surrey, Kornelius Nielsch, Bernd Rellinghaus
SCIENTIFIC REPORTS
(2017)
Article
Chemistry, Physical
L. Allidieres, A. Brisse, P. Millet, S. Valentin, M. Zeller
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Thermodynamics
Regis Anghilante, Christian Mueller, Max Schmid, David Colomar, Felix Ortloff, Reinhold Sporl, Annabelle Brisse, Frank Graf
ENERGY CONVERSION AND MANAGEMENT
(2019)
Article
Chemistry, Physical
Julie Villanova, Sabine Schlabach, Annabelle Brisse, Aline Leon
JOURNAL OF POWER SOURCES
(2019)
Article
Electrochemistry
A. Brisse, M. Zeller, B. Ludwig, J. Brabandt
Article
Microscopy
Alexander Surrey, Ludwig Schultz, Bernd Rellinghaus
ADVANCED STRUCTURAL AND CHEMICAL IMAGING
(2016)
Proceedings Paper
Engineering, Environmental
Floriane Petipas, Annabelle Brisse, Chakib Bouallou
PRES15: PROCESS INTEGRATION, MODELLING AND OPTIMISATION FOR ENERGY SAVING AND POLLUTION REDUCTION
(2015)