Article
Nanoscience & Nanotechnology
Muhammad Zubair Khan, Muhammad Taqi Mehran, Amjad Hussain, Seung-Bok Lee, Tak-Hyoung Lim, Rak-Hyun Song
Summary: This study aims to predict the degradation in the performance of a solid oxide fuel cell cathode due to cation interdiffusion and surface segregation. The study evaluates cation migration in the composite cathode using scanning transmission electron microscopy-energy-dispersive X-ray spectroscopy. The resulting insulating phase formed within the cathode is quantified and the corresponding performance degradation is predicted. Mathematical relationships are established for the estimation of degradation due to surface segregation. The study provides a systematic understanding of the time-dependent cation migration and segregation behavior.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Materials Science, Ceramics
Muhammad Zubair Khan, Rak-Hyun Song, Muhammad Taqi Mehran, Seung-Bok Lee, Tak-Hyoung Lim
Summary: Solid oxide fuel cells (SOFCs) are a potential way to achieve efficient and clean electrochemical energy conversion, but commercialization is hindered by material degradation, especially at the cathode-electrolyte interface. Understanding cation migration and interdiffusion is crucial for improving SOFC durability, with perovskite-based oxides showing promising results. Control measures for interdiffusion in the cathode/electrolyte/interlayer are key to designing highly efficient and stable SOFCs.
CERAMICS INTERNATIONAL
(2021)
Article
Electrochemistry
Fiammetta Rita Bianchi, Aiswarya Krishnakumar Padinjarethil, Anke Hagen, Barbara Bosio
Summary: Nickel based fuel electrodes are commonly used in solid oxide fuel cells, with high catalytic activity but reduced system lifetime. By comparing the behavior of two state-of-the-art planar cells, a detailed understanding of the microstructural changes and degradation mechanisms was obtained. Experimental observations and a physics-based model predicted the cell operation under different conditions, with nickel-based electrode degradation identified as the main cause due to instability and resulting changes in catalytic activity and conductivity.
ELECTROCHIMICA ACTA
(2023)
Article
Engineering, Chemical
Michele Gibelli, Giulio Cordaro, Alessandro Donazzi
Summary: In this study, symmetric electrolyte-supported YSZ cells infiltrated with LSF were prepared, characterized, and tested in the oxygen reduction reaction. The effects of calcination temperature and precursors load on the ORR activity were investigated, with optimal performance achieved at 750 degrees C and with LSF loads between 20% and 40%. Equivalent circuit analysis of the EIS results indicated that the reactivity at the LSF/gas interface is rate-determining.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Energy & Fuels
Nor Anisa Arifin, Abd Halim Shamsuddin, Robert Steinberger-Wilckens
Summary: This study evaluates the influence of carbon deposition on the performance of Ni/YSZ and Ni/ScSZ solid oxide fuel cells operating in simulated biogas. The results show that carbon deposition affects performance, with Ni/ScSZ cells having higher carbon content but better performance than Ni/YSZ cells.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Electrochemistry
A. A. Solovyev, K. A. Kuterbekov, S. A. Nurkenov, A. S. Nygymanova, A. V. Shipilova, E. A. Smolyanskiy, S. V. Rabotkin, I. V. Ionov
Summary: The multilayer thin film cathode of the SOFC with different thickness of the layers is obtained by magnetron sputtering. The optimal thickness of the layers provides maximum power density for SOFCs, leading to improved efficiency. The performance of the SOFC with the multilayer cathode is significantly enhanced in the investigated temperature range.
Article
Electrochemistry
Jiashen Tian, Ryan J. Milcarek
Summary: The study found that the impact of siloxane on the anode of solid oxide fuel cells is irreversible, and carbon is also an important factor in siloxane contamination.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Review
Materials Science, Ceramics
Teruhisa Horita
Summary: This paper discusses the crucial challenge of prolonged durability in Solid Oxide Fuel Cell systems, focusing on volatile chromium species poisoning. Through chemical reactions and electrochemical reduction, the interactions between perovskite oxide cathode surface and volatile Cr species are studied. The paper proposes solutions and analyzes recovery mechanisms, providing insights for new material combinations in next-generation SOFCs.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Mtabazi Geofrey Sahini, Samwel Daud Lupyana
Summary: The occurrence of cation interdiffusion in solid oxide fuel cells (SOFCs) during sintering and operation is inevitable due to high temperatures and chemical potential gradients. This can lead to the formation of secondary phases through solid state reactions. Understanding the factors that trigger cation interdiffusion and interface reactions is crucial for controlling their occurrences. Various methods, such as the use of diffusion barriers, strontium-free cathode materials, and lower sintering and operating temperatures, can be used to minimize or control cation interdiffusion.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Chemistry, Physical
Yinkai Lei, Yueh-Lin Lee, William K. Epting, Jerry H. Mason, Tian-Le Cheng, Harry Abernathy, Gregory Hackett, You -Hai Wen
Summary: Ni redistribution in the hydrogen electrodes of solid oxide cells is an important degradation mechanism. This study investigates the interplay between Ni(OH)2 diffusion and Ni-YSZ wettability change, and identifies the driving force of Ni spreading/detachment and the factors affecting Ni redistribution. Two missing pieces in current theory of Ni redistribution are also identified.
JOURNAL OF POWER SOURCES
(2022)
Article
Energy & Fuels
Jiashen Tian, Ryan J. Milcarek
Summary: The degradation of nickel-yttria stabilized zirconia (Ni-YSZ) anode in solid oxide fuel cells (SOFC) due to different types of siloxane contamination was investigated. It was found that cyclic siloxane, D4, caused more severe degradation with higher deposition on YSZ. The high adsorption and low desorption rates of cyclic siloxane were identified as the main factors contributing to the degradation.
FRONTIERS IN ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Yusuke Morino
Summary: This study analyzed the degradation rate of the cathode in all-solid-state lithium-ion batteries with sulfide-based solid electrolytes. The results showed that the degradation was controlled by two side reactions, and the cathode's performance was influenced by the decomposition of the solid electrolyte and the involvement of a coating material.
JOURNAL OF POWER SOURCES
(2022)
Article
Nanoscience & Nanotechnology
Meisam Hasanpoor, Damien Saurel, Rosalia Cid Barreno, Kilian Fraysse, Maria Echeverria, Maria Jauregui, Francisco Bonilla, George W. Greene, Robert Kerr, Maria Forsyth, Patrick C. Howlett
Summary: This study investigated the use of highly concentrated ionic liquid electrolyte for high-voltage Ni-rich cathodes, achieving a stable electrode/electrolyte interface and efficient long-term cycling performance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Energy & Fuels
Xirui Zhang, Lingting Ye, Kui Xie
Summary: This study presents a method of electrochemically reducing carbon dioxide into valuable chemicals and fuels to achieve emission reduction. By engineering the interfaces, the length and composition of the active interfaces are increased to promote CO2 reduction. The experiment shows that the best performance can be achieved with an applied voltage of 0.8 V under the composition of Ni0.5Cu0.5-NTMO.
Article
Energy & Fuels
Nadezhda S. S. Tsvetkova, Dmitry A. A. Malyshkin, Ivan L. L. Ivanov, Dmitry S. S. Tsvetkov, Andrey Yu. Zuev
Summary: Chemical compatibility and cation interdiffusion between RBaCo2O6-delta (R = Gd, Pr) and BaZr0.8Y0.2O3-delta were studied. The study found that chemical interaction occurs at 1100 degrees C, leading to partial dissolution of RBaCo2O6-delta (R = Gd, Pr) in BaZr0.8Y0.2O3-delta. Cation interdiffusion, with cobalt being the most mobile, was observed along the cross sections of the diffusion couples. Addition of NiO as a sintering aid promoted cation diffusion, increasing the diffusion depth of Co. The implications of cation interdiffusion on proton-conducting solid oxide fuel cells were discussed based on the results obtained.
Article
Energy & Fuels
Jianmin Zheng, Liusheng Xiao, Mingtao Wu, Shaocheng Lang, Zhonggang Zhang, Ming Chen, Jinliang Yuan
Summary: In this study, a 3D multi-physics coupled model was developed to analyze the temperature and thermal stress distribution in a planar solid oxide fuel cell stack. The effects of different flow channels and electrolyte thickness were investigated. The results show that the co-flow mode has higher power generation and lower thermal stress compared to the cross-flow mode.
Article
Chemistry, Physical
Steven Pirou, Qingjie Wang, Peyman Khajavi, Xanthi Georgolamprou, Sandrine Ricote, Ming Chen, Ragnar Kiebach
Summary: Proton-conducting ceramics have significant potential in the hydrogen market. Symmetrical cells based on barium zirconate/cerate materials demonstrate excellent electrochemical performance and stability for H2 extraction applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Electrochemistry
Qingjie Wang, Sandrine Ricote, Yu Wang, Peter Vang Hendriksen, Jianqiang Wang, Ming Chen
Summary: In this study, a composite oxygen electrode was prepared by infiltrating a protonic-electronic conducting material into a proton-conducting backbone. The electrode performance was characterized using EIS and three electrode reaction processes were observed. The developed electrode showed low polarization resistance under varying operating conditions.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Shenglan Yang, Jianbao Gao, Martina Trini, Salvatore De Angelis, Peter Stanley Jorgensen, Jacob R. Bowen, Lijun Zhang, Ming Chen
Summary: In this paper, quantitative modeling of Ni coarsening in Ni-YSZ electrodes was achieved through 3D phase-field simulation supported by ex-situ ptychographic nano-tomography. The success of this work is expected to pave the way for accurate prediction of the service life and even design of high-performance Ni-YSZ electrodes.
Article
Electrochemistry
Yun Xie, Nai Shi, Xueyu Hu, Kang Zhu, Ranran Peng, Changrong Xia, Ming Chen
Summary: This study demonstrates that the novel electrochemical catalyst improves the stability and electrochemical performance of R-PCCs. The enhanced stability and performance of the air electrode catalyst may be attributed to the higher electronegativity of La, which reduces basicity and improves chemical stability in acidic atmospheres; the smaller ionic radius of La, which alleviates lattice distortion; and the stronger interaction between La and lattice oxygen, inhibiting structural degradation caused by Sr segregation.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Electrochemistry
Lea Rorato, Yijing Shang, Shenglan Yang, Maxime Hubert, Karine Couturier, Lijun Zhang, Julien Vulliet, Ming Chen, Jerome Laurencin
Summary: A long-term test of 2000 h has revealed a strong Ni depletion at the electrolyte interface in a typical solid oxide cell operated in electrolysis mode at -1 A.cm(-2) and 750 degrees C. To explain this phenomenon, an electrochemical and phase-field model has been developed, proposing a mechanism that accounts for the impact of polarization on the Ni/YSZ wettability. The simulations based on this model have demonstrated a strong Ni depletion at the electrolyte interface during electrolysis operation, confirming the relevance of the proposed mechanism.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Materials Science, Ceramics
Leszek Ajdys, Agnieszka Zurawska, Magdalena Kosiorek, Yevgeniy Naumovich, Magdalena Zybert, Paulina Wiecinska, Ming Chen
Summary: This paper analyzes the effect of particle size distribution on the quality of electrophoretic deposition coating. The results show that increasing the fine powder fraction can improve the density of the coating and slow down the growth rate of oxides, leading to a decrease in surface resistance. Samples prepared with admixed powder exhibit the lowest resistivity. Post-test analysis indicates no diffusion of chromium through the fabricated layers, indicating the reliability of the protective barrier.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Wei -Wei Zhang, Erwin Povoden-Karadeniz, Yijing Shang, Peter Vang Hendriksen, Ming Chen
Summary: This study aims to identify the phase stability of LSC by thermodynamic modeling and experimental validation. The calculated results show good agreement with experimental data. Furthermore, other properties of the LSC perovskite are predicted based on the developed database. These calculations provide guidance for designing LSC-based materials for various applications.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Yijing Shang, Anne Lyck Smitshuysen, Miao Yu, Yuliang Liu, Xiaofeng Tong, Peter Stanley Jorgensen, Lea Rorato, Jerome Laurencin, Ming Chen
Summary: Solid oxide electrolysis cells (SOECs) are highly efficient and flexible energy conversion devices, but their long-term operation is limited by the degradation of Ni/yttria-stabilized zirconia (YSZ) fuel electrodes, which is recognized as one of the main causes for cell performance loss. This study investigates the microstructure evolution of Ni/YSZ electrodes after long-term operation in a CO/CO2 atmosphere. Results show significant loss of Ni in the active electrode and increased Ni fraction in the support layer after 1000 hours of operation at -1 A cm(-2). Ni coarsening was also observed. Similarly, Ni migration away from the electrode/electrolyte interface occurs during long-term CO2 electrolysis.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Hua Liu, Lasse Rongaard Clausen, Ligang Wang, Ming Chen
Summary: This study investigates the heat balance and degradation process of solid oxide electrolysis cell (SOEC) at the system level, comparing the Levelized Cost of Hydrogen (LCOH) at different locations under three scenarios: heat integration, super grid connection, and SOEC development. It is found that SOEC generates additional ohmic heat and reduces the external heat demand significantly after degradation. Through heat integration, the LCOH is reduced to $3.60 per kg, further lowered to $2.59 per kg with the super grid connection. SOEC development breaks the trade-off between current density and degradation, resulting in an LCOH of $2.18 per kg. By 2035, green hydrogen is expected to achieve an LCOH of $1.40 per kg, surpassing gray hydrogen.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Zhenjun Jiao, Yunpeng Su, Wenyue Yang, Jianli Zhou, Jin Zhang, Xiaofeng Tong, Yijing Shang, Ming Chen
Summary: Numerical modeling plays a crucial role in understanding the multi-physics coupling in solid oxide fuel/electrolysis cells (SOFCs/SOECs). By integrating the phase-field method and finite element method, a unified numerical model quantitatively investigates the microstructure evolution of hydrogen electrodes in different modes, revealing the impact of nickel migration on microstructure and electrode durability.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Multidisciplinary
Junwei Wang, Hua Liu, Yuliang Liu, Ming Chen
Summary: The corrosion behavior of SUS 441, Crofer 22 APU, and Canthal APM in molten Na2CO3-K2CO3 at 800 degrees C was studied. The results showed that due to the oxidation of Cr in the steel to NaCrO2, 441 and APU corroded heavily, while the APM alloy exhibited excellent corrosion resistance due to the formation of a protective Al2O3 layer.
Article
Chemistry, Multidisciplinary
Xiaofeng Tong, Chen Li, Kaikuo Xu, Ningling Wang, Karen Brodersen, Zhibin Yang, Ming Chen
Summary: This study reports the development of large, commercially relevant solid oxide fuel cells (SOFCs) with two nanoengineered electrodes, demonstrating excellent performance. The use of self-assembled nanocomposites in the cathode and nanometer-scale Ce0.8Gd0.2O2-delta in the anode enables a larger electrochemically active region and improved oxygen exchange kinetics and electronic conductivity.
Article
Materials Science, Ceramics
Hua Hu, Zhijun Liu, Zhangfa Huang, Baohua Cao, Ming Chen, Qin Wang, Wanbing Guan, Jun Yang, Jianxin Wang, Yu Su
Summary: A novel acetic-acrylic method was developed to synthesize high-performance La0.6Sr0.4CoO3-δ (LSC) powders, which were used in cathode and anode materials.
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
(2023)
Article
Materials Science, Multidisciplinary
Qingjie Wang, Xiaofeng Tong, Sandrine Ricote, Rokas Sazinas, Peter Vang Hendriksen, Ming Chen
Summary: This study addresses the poor performance and insufficient long-term durability of the oxygen electrode in protonic ceramic electrolysis cell (PCEC) technology through the design of a LaCoO3 (LC) catalyst infiltrated porous BaZr0.8Y0.2O3-δ (BZY20) backbone electrode (LC-BZY20). Results show that the LC-BZY20 electrode exhibits good electrochemical performance and stability.
ADVANCED POWDER MATERIALS
(2022)
