Article
Chemistry, Physical
Yifeng Li, Shihang Guo, Donglin Han
Summary: In this study, researchers found that there was good chemical compatibility between NiO and BaZr0.8Yb0.2O3 or BaZr0.8Tm0.2O3 at 1500 degrees Celsius. Additionally, BaZr0.8Y0.1Yb0.1O3 and BaZr0.8Y0.12Yb0.08O3 showed good chemical compatibility with NiO at 1350 and 1500 degrees Celsius. The co-doped BaZrzYxYb0.2-xO3 electrolyte exhibited higher conductivity compared to BaZr0.8Y0.2O3, with BaZr0.8Y0.1Yb0.1O3 showing the highest conductivity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
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
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
Materials Science, Ceramics
D. Ciria, M. Jimenez-Melendo, V. Aubin, G. Dezanneau
Summary: The high-temperature mechanical properties of yttrium-doped barium zirconate obtained by two different routes are investigated in this study. The material shows a gradual transition from brittle-to-ductile behavior as temperature increases and/or strain rate decreases during compression tests.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
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
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
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
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
L. Spiridigliozzi, G. Accardo, E. Audasso, S. P. Yoon, G. Dell'Agli
Summary: Orthorhombic perovskite materials BaCe0.85Gd0.15O3-& delta; (BCGO) doped with variable amounts of CuO (0-5 mol%) were synthesized and exhibited high total ionic conductivities. Various characterization techniques were used to analyze the samples, including X-ray Diffraction (XRD), Rietveld refinement, Scanning Electron Microscopy (SEM), Raman spectroscopy, and Electrochemical Impedance Spectroscopy analysis (EIS). The addition of copper as a sintering aid improved the density and conductivity of BCGO, with the optimal content being around 2 mol%.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Amir Masoud Dayaghi, Jonathan M. Polfus, Ragnar Strandbakke, Anuj Pokle, Laura Almar, Sonia Escolastico, Einar Vollestad, Jose M. Serra, Reidar Haugsrud, Truls Norby
Summary: The effects of NiO, ZnO, and CuO sintering additives on proton conducting electrolytes were studied. The additives decreased the effective acceptor concentration, with NiO having the largest impact. NiO and CuO were found to optimize both sintering and hydration.
SOLID STATE IONICS
(2023)
Review
Green & Sustainable Science & Technology
Arpan Kumar Nayak, Ananta Sasmal
Summary: Recently, Perovskite oxides have been widely used in electrochemical conversion devices like Proton conducting Ceramic Fuel Cells (PCFC). Among them, barium zirconate (BaZrO3) is considered as a promising PCFC electrolyte material due to its excellent chemical stability and rapid proton diffusion. By altering the synthesis parameters and conditions, various novel synthesis techniques have been employed to prepare barium zirconate (BaZrO3) with enhanced material properties. Doping with trivalent impurities improves proton mobility and increases proton conductivity at reduced temperature, thereby expanding the scope of PCFC application with optimized output performance.
JOURNAL OF CLEANER PRODUCTION
(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)
Review
Chemistry, Physical
Giulia Winterhoff, Steffen Neitzel-Grieshammer
Summary: Barium zirconate doped with trivalent oxides, such as yttria, shows high protonic conductivity and holds potential as a solid electrolyte in ceramic fuel cells. This review summarizes the available literature data on the interaction energies between protons and dopant ions, as well as the migration barriers of proton motion in bulk BaZrO3.
SOLID STATE IONICS
(2023)
Article
Chemistry, Multidisciplinary
Akanksha Yadav, Ram Pyare, Thandavarayan Maiyalagan, Preetam Singh
Summary: Ceramic fuel cells offer more advantages over PMFCs due to their fuel flexibility and high performance at elevated temperature. Simultaneous substitution of K and Ga can improve the low ionic conductivity issues of BaZrO3 based materials at high temperature.
Article
Chemistry, Physical
Amir Masoud Dayaghi, Reidar Haugsrud, Marit Stange, Yngve Larring, Ragnar Strandbakke, Truls Norby
Summary: Proton conducting oxide electrolytes with increased thermal expansion coefficient by partially substituting Ba and Zr with Sr and Ce while maintaining a cubic structure and minor n-type conduction, have potential applications in proton ceramic electrochemical cells at intermediate temperatures.
SOLID STATE IONICS
(2021)
Article
Chemistry, Physical
Jisu Shin, Jung Hoon Park, Junseok Kim, Kyung Joong Yoon, Ji-Won Son, Jong-Ho Lee, Hae-Weon Lee, Ho-Il Ji
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Nanoscience & Nanotechnology
Mingi Choi, Ismail A. M. Ibrahim, Kyeounghak Kim, Ja Yang Koo, Seo Ju Kim, Ji-Won Son, Jeong Woo Han, Wonyoung Lee
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Physical
Cam-Anh Thieu, Sungeun Yang, Ho-Il Ji, Hyoungchul Kim, Kyung Joong Yoon, Jong-Ho Lee, Ji-Won Son
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
Chemistry, Multidisciplinary
Ki-Young Lee, Sujin Jo, Aik Jun Tan, Mantao Huang, Dongwon Choi, Jung Hoon Park, Ho-Il Ji, Ji-Won Son, Joonyeon Chang, Geoffrey S. D. Beach, Seonghoon Woo
Article
Materials Science, Multidisciplinary
Jung Hoon Park, Jong-Ho Lee, Kyung Joong Yoon, Hyoungchul Kim, Ho-Il Ji, Sungeun Yang, Sangbaek Park, Seung Min Han, Ji-Won Son
Summary: By reducing the Ni content to 2 vol% and uniformly dispersing nano-sized Ni particles in a mixed ionic-electronic conducting matrix using a thin-film technique, remarkable stability and performance enhancement were achieved for the optimized nanostructured anodes. The study provides valuable insights for improving the durability, performance, and productivity of SOFCs.
Article
Chemistry, Multidisciplinary
Sung Soo Shin, Jeong Hun Kim, Hyeseong Jeong, Mi Young Park, Kyung Joong Yoon, Ji-Won Son, Mansoo Choi, Hyoungchul Kim
Summary: The article introduces a novel two-step precursor infiltration process for fabricating high-performance LT-SOFCs with homogeneous and robust nanocatalysts. The infiltration technique reduces cathodic polarization resistance and achieves an enhanced peak power density in LT-SOFC technology.
Article
Chemistry, Physical
Cam-Anh Thieu, Sungeun Yang, Ho-Il Ji, Hyoungchul Kim, Kyung Joong Yoon, Jong-Ho Lee, Ji-Won Son
Summary: The use of low-cost catalysts, Cu and CeO2, in TF-SOFCs can significantly increase performance and efficiency of solid oxide fuel cells, especially at lower operating temperatures, while also reducing costs and improving resistance to carbon deposition.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Multidisciplinary Sciences
Junseok Kim, Seunghyeok Im, Seol Hee Oh, Ji Yeong Lee, Kyung Joong Yoon, Ji-Won Son, Sungeun Yang, Byung-Kook Kim, Jong-Heun Lee, Hae-Weon Lee, Jong-Ho Lee, Ho-Il Ji
Summary: Solid oxide cells with a bilayer electrolyte structure have been successfully fabricated at lower sintering temperature, demonstrating high performance and defect-free characteristics. The resulting cells show minimal ohmic loss and remarkable performance in both fuel cell and electrolysis operations.
Article
Energy & Fuels
Dong Hwan Kim, Sungeun Yang, Deok-Hwang Kwon, Ho-Il Ji, Ji-Won Son, Joon Hyung Shim
Summary: This study aimed to improve the stability of solid oxide fuel cell cathodes by surface modification to overcome performance degradation during high-temperature fabrication. Wet chemical etching was used to remove segregated elements and atomic layer deposition was employed to prevent further element separation. The modified cathodes showed improved stability and performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Han Gil Seo, Dong Hwan Kim, Jongsu Seo, Seung Jin Jeong, Jinwook Kim, Harry L. Tuller, Ji-Won Son, WooChul Jung
Summary: This study demonstrates high-performance and durable solid oxide fuel cells (SOFCs) by employing a cobalt/strontium-free fluorite-based mixed conducting cathode. The developed PCO electrode shows remarkable low electrode resistance and exceptional long-term stability, outperforming conventional perovskite cathodes.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Hyegsoon An, Seunghyeok Im, Junseok Kim, Byung-Kook Kim, Ji-Won Son, Kyung Joong Yoon, Hyoungchul Kim, Sungeun Yang, Hyungmook Kang, Jong-Ho Lee, Ho-Il Ji
Summary: This study reveals a new mechanism of sintering activation, in which the release of vapor-phase BaNiOx accelerates the sintering of refractory proton-conducting oxides.
ACS ENERGY LETTERS
(2022)
Article
Multidisciplinary Sciences
Seongkook Oh, Min Jun Oh, Jongsup Hong, Kyung Joong Yoon, Ho-Il Ji, Jong-Ho Lee, Hyungmook Kang, Ji-Won Son, Sungeun Yang
Summary: The study focused on utilizing NH3 fuel in SOFCs, with findings indicating that lowering operating temperatures can diversify application areas and that efficient ammonia decomposition catalysts are crucial for enhancing the performance of low-temperature DA-SOFCs.
Article
Chemistry, Physical
Seunghyeok Im, Muhammet Ali Berk, Sungeun Yang, Byung-Kook Kim, Kyung Joong Yoon, Ji-Won Son, Jong-Ho Lee, Ho-Il Ji
Summary: This study investigates the proton uptake mechanism in the triple ionic-electronic conducting oxide PBSCF and discusses the correlations between the proton uptake mechanisms and properties such as mass and conductivity changes.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Sung Soo Shin, Jeong Hun Kim, Kyung Taek, Kang-Taek Lee, Sang Moon Kim, Ji-Won Son, Mansoo Choi, Hyoungchul Kim
ENERGY & ENVIRONMENTAL SCIENCE
(2020)
Article
Chemistry, Physical
Channyung Lee, Sung Soo Shin, Jiwoo Choi, Jinhyeon Kim, Ji-Won Son, Mansoo Choi, Hyun Ho Shin
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
