Article
Chemistry, Physical
Zhen Wang, Luyao Ding, Shenglong Yu, Huan Xu, Xiaohui Hao, Yi Sun, Tianmin He
Summary: A comparative study was conducted to investigate the effect of different addition strategies for a sintering aid of ZnO on the performance of the BaZr0.4Ce0.4Y0.2O3-delta electrolyte. The results showed that the internally-doped sample exhibited higher relative density and lower grain boundary core barrier height, leading to higher power density and better ion transport performance.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Donglin Han, Kazuhiro Goto, Masatoshi Majima, Tetsuya Uda
Summary: The addition of NiO in Y-doped BaZrO3, BaCeO3, and BaZr1-xCexO3 decreases dehydration temperature and proton concentration, leading to reduced ionic conductivity and transport number. This results in worse ion conductivity and brittle electrolyte in Ce-rich samples containing Ni.
Article
Materials Science, Ceramics
L. S. Hagy, K. Ramos, M. V. Gelfuso, A. L. Chinelatto, A. S. A. Chinelatto
Summary: The reduction of sintering time and temperature for BaCe0.2Zr0.7Y0.1O3-delta was investigated using unconventional route and sintering aid. Effects of ZnO addition and microwave sintering on structure, sinterability, microstructure, and electrical conductivity were explored. Both ZnO addition and microwave sintering improved the density and conductivity, with microwave sintering providing a rapid alternative for sintering.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Tomohiro Kuroha, Yoshiki Niina, Mizuki Shudo, Go Sakai, Naoki Matsunaga, Takehito Goto, Kosuke Yamauchi, Yuichi Mikami, Yuji Okuyama
Summary: This study investigates ceramic tape-casting and anode electrolyte co-firing for large-scale manufacturing of protonic ceramic fuel cells. It confirms the reactivity of certain metal elements with the anode material and reveals that NiO doping decreases the proton conductivity of all materials. The research identifies the suitable material BZYb20 for this fabrication technique.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Donglin Han, Xin Liu, Tor Svendsen Bjorheim, Tetsuya Uda
Summary: Increasing Ce content in Y-doped BaZrO3, BaCeO3, and their solid solutions stabilizes protons, increases oxide ion conductivity, and decreases hole conduction, thereby enhancing the ionic conduction of BZCY20 for improved performance in fuel cells and electrolysis cells.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Donglin Han, Lulu Jiang, Peng Zhong
Summary: This study improved the phase compatibility between BaZrO3-based electrolyte and NiO electrode substrate by adjusting the electrolyte composition and selecting proper dopants. However, high temperature heat treatment during co-sintering led to Ni diffusion into the electrolyte layer, negatively impacting performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
Meilong Chen, Mingyang Zhou, Zhijun Liu, Jiang Liu
Summary: This paper compares the performance of two proton-conducting ceramic fuel cell electrolyte materials, BZY and BZCY. The results show that while BZCY has higher conductivity, BZY exhibits greater stability in a CO2-containing environment.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Elisa Mercadelli, Angela Gondolini, Daniel Montaleone, Paola Pinasco, Alessandra Sanson
Summary: This study presents the use of Dynamic Mechanical Analysis to characterize the thermo-mechanical behavior of green tapes, with a focus on the impact of rice starch pore former content on the tape properties and lamination process. It identified an optimal lamination viscosity (10(10) Pa s) required for suitable adhesion among the layers, regardless of the tape formulation. The study also highlighted the increase in temperature required for proper lamination with higher rice starch content in the tapes.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Electrochemistry
Yuji Okuyama, Yoshiaki Harada, Yuichi Mikami, Kosuke Yamauchi, Tomohiro Kuroha, Hiroyuki Shimada, Yuki Yamaguchi, Yasunobu Mizutani
Summary: A proton current detector was developed using a proton conducting oxide to measure the proton current in a PCFC. An apparatus based on the electromotive force of an electrochemical cell was used to measure the amount of proton current flowing in the PCFC. The hydrogen ion current was determined by monitoring the water vapor pressure.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Energy & Fuels
Huayang Zhu, Sandrine Ricote, Robert J. Kee
Summary: This study develops a model that predicts the behavior of faradaic efficiency as a function of operating conditions for proton-conducting ceramic cells. The study focuses on a cell based on a BCZYYb membrane and predicts the effects of temperature, pressure, and gas compositions on the efficiency.
JOURNAL OF PHYSICS-ENERGY
(2022)
Article
Electrochemistry
Dan Cao, Mingyang Zhou, Xiaomin Yan, Zhijun Liu, Jiang Liu
Summary: A tubular protonic ceramic fuel cell with BaCe0.7Zr0.1Y0.2O3-δ electrolyte was fabricated using the dip-coating technique. The cell showed good electrochemical performance, with output power even at a temperature as low as 200°C. Stability testing at 600°C showed that the cell's operating power density gradually stabilized over 30 hours of testing.
ELECTROCHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Donglin Han, Kazuaki Toyoura, Tetsuya Uda
Summary: This study investigates the hydration behavior of acceptor-doped BaZrO3 under varying water vapor pressure and reveals that hydration process increases proton concentration and lattice constants. The chemical expansion due to water incorporation influences the local crystal structure and can effectively suppress hole conduction in BaZrO3, showing a feasible strategy to enhance the performance of electrochemical devices.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Ceramics
Zidai Fan, Dan Cao, Mingyang Zhou, Ziyi Zhu, Meilong Chen, Jiang Liu
Summary: Proton-conducting perovskite oxide BaCe0.7Zr0.1Y0.2O3-delta (BZCY) is prepared using carbonate coprecipitation method with Tween-80 as the surfactant, resulting in well dispersed particles with an average size of 200 nm. The BZCY powder is used as the electrolyte material in a Ni-based anode-supported protonic ceramic fuel cell (PCFC). The electrolyte can be densified without any sintering aids at 1400 degrees C in open air, and the PCFC exhibits a peak power density of 1050 mW cm-2 at 700 degrees C, with a conducting activation energy of 0.36 eV. The superiority of the BZCY powder prepared using the coprecipitation method is demonstrated by comparing it with a BZCY powder made by conventional solid-state reaction method.
CERAMICS INTERNATIONAL
(2023)
Review
Materials Science, Multidisciplinary
Hanchen Tian, Zheyu Luo, Yufei Song, Yucun Zhou, Mingyang Gong, Wenyuan Li, Zongping Shao, Meilin Liu, Xingbo Liu
Summary: In recent years, the hydrogen economy has gained strong support from governments and industrial bodies worldwide. Protonic ceramic electrochemical cells (PCECs) have attracted significant attention due to their lower operation temperature, reversible operation, and potential for further development. However, there are still many challenges that need to be addressed. This review aims to provide insightful perspectives on the critical challenges facing PCEC development, prioritize future efforts, and propose promising directions for advancement.
INTERNATIONAL MATERIALS REVIEWS
(2023)
Article
Materials Science, Ceramics
J. Wallis, S. Ricote, K-D Weltmann, E. Burkel, A. Kruth
Summary: In this study, BaZr0?7Ce0?2Y0?1O3-? (BZCY72) proton-conducting ceramics were prepared using Spark Plasma Sintering. The sintering temperature was found to have a significant impact on the microstructural, crystallographic, and electrochemical properties of BZCY72, with the best results achieved at 1450°C. The increase in temperature resulted in denser samples, larger crystallite and grain sizes, and higher GB conductivities.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Long Q. Le, Carolina Herradon Hernandez, Marcos Hernandez Rodriguez, Liangzhu Zhu, Chuancheng Duan, Hanping Ding, Ryan P. O'Hayre, Neal P. Sullivan
Summary: This study demonstrates the scaling up of proton-conducting ceramic fuel cells (PCFCs) into small, multi-cell stacks with reasonable performance and low degradation through material tuning, fabrication procedures, and operating condition adjustments. Specific materials such as the BCZYYb electrolyte and the BCFZY cathode, as well as packaging with ferritic-steel interconnects and macor frames, contribute to the long-term durability and performance of the fuel cell stacks.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Ceramics
Michael Knight, Dylan Jennings, Sandrine Ricote, Ivar Reimanis
Summary: This study investigated the valence state of Ni in solid-state reactive sintered BZY with different Ni concentrations. The results showed the presence of transient BaY2NiO5 phase and confirmed that low-spin Ni3+ predominantly substitutes for Zr4+ in the microstructure.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Dylan Jennings, Sandrine Ricote, Jose Manuel Caicedo, Jose Santiso, Ivar Reimanis
Summary: The study investigates the effects of Ni and Fe on the evolution of BZY thin films in high temperature, reducing environments, showing that Ni promotes film decomposition while Fe prevents it. This is consistent with thermodynamic predictions indicating Fe addition diminishes the Gibbs free energy change for decomposition.
SCRIPTA MATERIALIA
(2021)
Editorial Material
Crystallography
Sebastian Wachowski, Gilles Gauthier, Jong-Sook Lee, Sandrine Ricote
Article
Biochemistry & Molecular Biology
Kasra Taghikhani, Alexis Dubois, John R. Berger, Sandrine Ricote, Huayang Zhu, Robert J. Kee
Summary: This paper presents an extended Nernst-Planck computational model that couples charged-defect transport and stress in a tubular electrochemical cell with a ceramic proton-conducting membrane. The model predicts transient and steady-state defect concentrations, fluxes, and stresses within a thin BZY20 membrane, and can be used to predict the performance as a fuel cell or an electrolyzer depending on the polarization. A sensitivity analysis reveals the significance of thermodynamic and transport properties which are often not readily available.
Review
Energy & Fuels
Clarita Y. Regalado Vera, Hanping Ding, David Peterson, William T. Gibbons, Meng Zhou, Dong Ding
Summary: Doped barium zirconate is a material with high proton conductivity and chemical stability, considered promising for proton-conducting solid oxide electrochemical cells. While its proton conduction has been extensively studied, the specific phenomena behind its conduction properties are not fully understood. Specialized techniques and computational tools are beginning to elucidate the phenomena governing the material's conduction properties.
JOURNAL OF PHYSICS-ENERGY
(2021)
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
Medical Laboratory Technology
Hui Shen, Dan Wang, Mengyun Zhan, Hanping Ding, Hongbo Zhao
Summary: MiR-146a and MiR-146b are decreased in psoriasis patients and negatively correlated with PASI scores; their gradually elevated expressions during etanercept treatment are associated with PASI75 response.
JOURNAL OF CLINICAL LABORATORY ANALYSIS
(2022)
Article
Biochemistry & Molecular Biology
Sandrine Ricote, Robert J. Kee, William G. Coors
Summary: Slip casting was used to prepare BCZY-NiO tubes with different diameters for use as hydrogen electrodes. The study found that the sintered BCZY layer adhered well to the support layer, and gas tightness was achieved through a sealing layer. Short tubes were found to have advantages in reactor design.
Review
Chemistry, Multidisciplinary
Jun Zhang, Sandrine Ricote, Peter Vang Hendriksen, Yunzhong Chen
Summary: Solid oxide fuel cells (SOFCs) are efficient electrochemical energy conversion devices that have the potential to become low cost. However, their high operating temperatures have hindered their widespread commercialization. This review summarizes the recent progress in developing materials to lower the operating temperature of SOFCs and discusses the new opportunities and challenges. The focus is on thin film SOFCs, sub-micrometer SOFCs based on microelectromechanical systems, and devices based on proton-conducting oxide electrolyte.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Electrochemistry
Robert J. Kee, Sandrine Ricote, Huayang Zhu, Robert J. Braun, George Carins, Joshua E. Persky
Summary: Proton-conducting ceramics play a crucial role in intermediate-temperature fuel cells, electrolyzers, and membrane reactors. Despite being primarily proton conductors, these materials also exhibit mixed ionic-electronic conduction. This paper focuses on steam-electrolysis applications using tubular cell configurations and discusses the scale-up considerations from laboratory demonstrations to deployable technology.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Multidisciplinary Sciences
Wenjuan Bian, Wei Wu, Baoming Wang, Wei Tang, Meng Zhou, Congrui Jin, Hanping Ding, Weiwei Fan, Yanhao Dong, Ju Li, Dong Ding
Summary: Researchers improved the electrochemical performance and stability of protonic ceramic fuel cells by acid treatment, enabling exceptional performance at lower temperatures.
Article
Chemistry, Physical
Emir Dogdibegovic, Sergio Ibanez, Anila Wallace, David Kopechek, Gene Arkenberg, Scott Swartz, John M. Funk, Michael Reisert, Muhammad Anisur Rahman, Ashish Aphale, Prabhakar Singh, Hanping Ding, Wei Tang, Michael Glazoff, Dong Ding, Theis L. Skafte, Michael C. Tucker
Summary: In this study, a Mn,Co-based oxide coating was applied to stainless steel interconnects and evaluated for use in solid oxide electrolyzer stacks. The experimental results showed that the coating significantly reduced the oxidation and Cr evaporation rates of the stainless steel, thereby improving the stack lifetime and degradation rate.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Wei Tang, Hanping Ding, Wenjuan Bian, Clarita Y. Regalado Vera, Joshua Y. Gomez, Yanhao Dong, Ju Li, Wei Wu, WeiWei Fan, Meng Zhou, Colin Gore, Bryan M. Blackburn, Hongmei Luo, Dong Ding
Summary: By engineering non-equivalent B-site Ni/Co occupancy in praseodymium cobaltite perovskite, this work promotes triple conduction by facilitating proton conduction, replacing conventional electrodes with sluggish kinetics in protonic ceramic electrochemical cells. Surface infrared spectroscopy is used to study the dehydration behavior and proves the existence of protons in the perovskite lattice. The increased nickel replacement on the B-site positively impacts proton defect stability, catalytic activity, and electrochemical performance, making it a promising pathway for increasing catalytic activity in oxygen reduction and water splitting reactions.
Article
Chemistry, Physical
Sandrine Ricote, William Grover Coors
Summary: This paper describes the fabrication of kaolinite spherical bulbs and their potential applications in hydrocarbon steam reforming. The bisque-fired parts exhibit submicron porosity with plate-like grains and channels. After nickel infiltration, nanosized Ni particles cover the channels' surfaces, resulting in improved permeation properties. Permeation tests conducted at elevated temperatures and pressure gradients showed promising flux values.