Article
Materials Science, Ceramics
Hyeongwon Jeong, Bharat Sharma, Seungyeon Jo, Yo Han Kim, Jae-ha Myung
Summary: The LSM-ScSZ composite electrode for SOFC cathode shows promising performance in oxygen reduction reaction. A properly controlled composition and sintering temperature improve the microstructure of the electrode, leading to reduced impedance and enhanced active surface area and connectivity. This study suggests an integrated approach in the development of SOFC cathode design using commercial materials.
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
O. Korjus, P. Moller, K. Kooser, T. Kaambre, O. Volobujeva, J. Nerut, S. Kotkas, E. Lust, G. Nurk
Summary: Ni-doping in LSCT fuel electrode significantly influences catalytic activity, stability, and cation mobility, leading to reduced polarization resistance, stabilized structure, suppressed element migration, and avoidance of key issues.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Ceramics
K. H. Tan, H. A. Rahman, M. S. Azami, U. A. Yusop, N. A. Baharuddin, M. I. Nor Ma'arof
Summary: This paper presents the development and characterization of a new composite cathode material BSCF-SDCC for low-temperature solid oxide fuel cell cathode application. The BSCF-SDCC composite cathode demonstrated excellent microstructural, chemical, and electrochemical properties. The composite cathode exhibited low polarization resistance and high conductivity, making it a promising candidate for low-temperature solid oxide fuel cell cathodes.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
L. Thommy, M. Benamira, T. Jardiel, V. Gunes, O. Joubert, M. T. Caldes
Summary: This study presents the synthesis of the LSC0.4MRu0.1 compound and compares its conductivity with LSCM and LSCM0.3Ni0.2. Results show that Ru substitution leads to increased total conductivity, while Ni substitution decreases conductivity. The reduced Ru-substituted compound shows potential for use as an anode material in SOFCs, but the high temperature decomposition and reduction processes should be carefully considered.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Review
Chemistry, Multidisciplinary
Marina Curi, Eduardo da R. Silva, Jose Geraldo de M. Furtado, Helen C. Ferraz, Argimiro R. Secchi
Summary: This paper presents a comprehensive review of different anodes for solid oxide fuel cells (SOFC), focusing on the Y-doped strontium titanate (YST) as a potential alternative to conventional Ni-YSZ anodes. YST demonstrated high conductivity and stability, making it a promising candidate for SOFC applications.
Article
Electrochemistry
Caterina Sanna, Paola Costamagna, Peter Holtappels
Summary: Several core-shell nanofiber electrodes are prepared through electrospinning and tested for application as intermediate-temperature solid oxide fuel cell (IT-SOFC) cathodes. The materials investigated are La0.6Sr0.4MnO3 (LSM), La0.6Sr0.4Cu0.1Mn0.9O3-delta (LSCuM_1), and La0.6Sr0.4Cu0.2Mn0.8O3-delta (LSCuM_2) perovskites, used at the shell side of the nanofibers. Ce0.9Gd0.1O1.95 (GDC10) fluorite is used as the core material. The electrochemical characterization of the core-shell nanofiber electrodes is performed through electrochemical impedance spectroscopy (EIS). The polarization resistance of the core-shell nanofiber electrodes is reported, and the most promising shell perovskite is identified through SEM characterization.
Article
Chemistry, Physical
Zhe Zhang, Sigeng Chen, Haixia Zhang, Chuangang Yao, Wenwen Zhang, Tingting Qu, Tan Wang, Haocong Wang, Xiaoshi Lang, Kedi Cai
Summary: Novel composite cathode materials prepared through a one-pot strategy showed improved oxygen reduction activity and CO2 tolerance in solid oxide fuel cells, leading to enhanced performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Chuangang Yao, Jixing Yang, Haixia Zhang, Sigeng Chen, Xiaoshi Lang, Jian Meng, Kedi Cai
Summary: The introduction of Ba deficiency in PB0.5-xSCO perovskites promotes the formation of additional oxygen vacancies, leading to a decrement in electrical conductivity and an improvement in electrochemical performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Gaurav Chasta, U. Bhakar, D. Suthar, Himanshu, R. Lamba, M. S. Dhaka
Summary: This study investigates the physical and electrochemical properties of slurry spin coated Yttria Stabilized Zirconia (YSZ) electrolyte thin films for solid oxide fuel cell (SOFC) applications. The concentration of ethyl cellulose (EC) in EC/YSZ/terpineol slurry is varied from 3.5 wt% to 6.5 wt%. The prepared YSZ thin films show polycrystalline nature with cubic phased prominent reflection corresponding to plane (111), and the crystallite size is determined to be in the range of 18-26 nm. The electrochemical properties confirm electrolytic response and the conductivity varies in the range of 10 4-10(-5) S/cm with the increase in EC content.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
K. Cwieka, A. Lysik, T. Wejrzanowski, T. Norby, W. Xing
Summary: This paper demonstrates the influence of modifications in microstructure and chemical composition on the electrochemical behavior of cathodes for molten carbonate fuel cells (MCFCs). By designing new three-layer cathode structures, combining porous silver, nickel oxide, and nickel foam layers, it is possible to enhance cell performance, decrease internal resistance, and improve charge transfer and mass transport efficiency.
JOURNAL OF POWER SOURCES
(2021)
Article
Nanoscience & Nanotechnology
Ruiyun Huang, Connor G. Carr, Chirranjeevi Balaji Gopal, Sossina M. Haile
Summary: In this study, a general electrochemical method for determining nonstoichiometry in thin film MIECs was demonstrated via measurement of the chemical capacitance. Impedance spectra measurements were conducted on ceria and ceria-zirconia materials under different oxygen partial pressures and temperatures. The results showed that nonstoichiometry values can be accurately determined from the chemical capacitance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Qin-Chao Wang, Zulipiya Shadike, Xun-Lu Li, Jian Bao, Qi-Qi Qiu, Enyuan Hu, Seong-Min Bak, Xianghui Xiao, Lu Ma, Xiao-Jing Wu, Xiao-Qing Yang, Yong-Ning Zhou
Summary: The study successfully improved the sodium ion transport and electrochemical performance by adjusting the occupancy ratio of two different sodium sites in P2 layered cathode materials. In situ X-ray absorption spectroscopy revealed charge compensation provided by Mn and Ni redox couples. Sb substitution suppressed phase transition in the high voltage region, ensuring structural stability.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Fatima Melit, Nedjemeddine Bounar, Shabana P. S. Shaikh, Manish Deshpande, Marlu Cesar Steil
Summary: This study investigated the synthesis and analysis of lanthanum and tin pyrochlores electrolytes for solid oxide fuel cell (SOFC) applications. Ceramic samples with different compositions were synthesized and characterized. The doping of strontium had a positive effect on the structural and electrical properties, leading to an increase in ionic conductivity and a decrease in activation energy. The La2-xSrxSn2O7-delta electrolyte shows potential for intermediate temperature SOFC applications.
Article
Materials Science, Ceramics
Chuangang Yao, Jixing Yang, Haixia Zhang, Xiaoshi Lang, Kedi Cai
Summary: The Ca-doped perovskite oxide PBCCCO was investigated as an SOFC cathode material. Ca doping significantly enhanced the electrical conductivity and electrochemical catalytic activity of the material, resulting in reduced ASR values.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Caterina Sanna, Wenjing Zhang, Paola Costamagna, Peter Holtappels
Summary: The study reports the synthesis and electrochemical characterization of composite cathodes made from a mixture of LSCF and GDC nanofibers. The electrodes showed low polarization resistance at 650 degrees C, indicating promising potential for practical applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Applied
Xianfa Zhang, Liancai Xun, Shan Gao, Yingming Xu, Xiaoli Cheng, Hui Zhao, Lihua Huo
Summary: The novel hierarchically structured V2O3@N-doped carbon nanosheet arrays on nickel foam exhibit superior electrochemical performance as a free-standing anode for lithium-ion batteries, with a high reversible capacity and long cycling life. The hierarchical structure and uniform N-doped carbon coated network contribute to the enhanced conductivity and reduced volume expansion of the electrode, leading to improved overall electrochemical performance.
Article
Chemistry, Analytical
Ping Wang, Lili Sui, Haixia Yu, Xianfa Zhang, Xiaoli Cheng, Shan Gao, Hui Zhao, Lihua Huo, Yingming Xu, Hongyuan Wu
Summary: Monodisperse alpha-Fe2O3 hollow ellipsoids were successfully fabricated with the addition of [C(12)mim][PF6] (IL) using a simple one-pot method, revealing the significant influence of calcination temperature and IL content on the structures. Gas sensors based on IL-loaded alpha-Fe2O3 hollow ellipsoids exhibited high response, sensitivity, and low detection limit to n-butanol, showing their potential as promising candidates for highly sensitive gas sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
M. Legree, V Charbonnier, S. Al Bacha, K. Asano, K. Sakaki, I Aubert, F. Mauvy, J-L Bobet
Summary: In this study, the hydrogen generation performance of LPSO compounds and LPSO + Mg alloys in simulated seawater solution was investigated. Results showed that LPSO compounds, especially the single phase LPSO Mg(87.6N)i(5.5)Y(6.9), exhibited improved H2 generation features compared to pure Mg. Alloys containing both Mg and LPSO benefited from galvanic coupling between the two phases, leading to higher reactivity and lower activation energies.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
Thomas Herisson de Beauvoir, Zakaria Ghomari, Geoffroy Chevallier, Andreas Flaureau, Alicia Weibel, Catherine Elissalde, Fabrice Mauvy, Rachman Chaim, Claude Estournes
Summary: Yttria stabilized zirconia ceramics prepared by Flash-SPS exhibit rapid densification and high hardness, providing new opportunities for the fabrication of porous lightweight ceramics with good mechanical properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Zhao Shijie, Li Na, Sun Liping, Li Qiang, Huo Lihua, Zhao Hui
Summary: This paper investigates the synthesis of Pr2CuO4-Pr6O11 composites using a one-pot method and characterizes their phase evolution and oxygen reduction reaction properties. The decoration of Pr6O11 effectively enhances the oxygen adsorption capability of the composite cathode. The composite exhibits promising performance as a cathode material for solid oxide fuel cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
J. Y. Wang, L. P. Sun, Q. Li, L. H. Huo, H. Zhao
Summary: Replacing the sluggish oxygen evolution reaction with methanol oxidation reaction is an effective strategy to improve the efficiency of hydrogen evolution reaction while obtaining valuable by-products.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Materials Science, Ceramics
Guihua Zou, Liping Sun, Lihua Huo, Hui Zhao
Summary: Cu-SnO2 is evaluated as a dual mode-sensing material for fast and accurate detection of H2O2. The material shows peroxidase-like behavior consistent with the Michaelis-Menten equation. An electrochemical sensor based on this material exhibits wide working range, low detection limit, and promising sensitivity for H2O2 detection. It can successfully detect H2O2 released from human liver cancer cells.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Sainan Zhang, Yingming Xu, Xiaoli Cheng, Shan Gao, Xianfa Zhang, Hui Zhao, Lihua Huo
Summary: In this work, flower-like Mn-based coordination polymers constructed by nanosheets were designed and synthesized, and hierarchical structured MnO/NC composites were successfully obtained through calcination. The composites exhibited a unique yolk-shell structure composed of micro-flowers assembled from nitrogen-doped carbon nanosheets uniformly loaded with MnO nanoparticles as the outer shell and MnO/NC nanoparticle aggregates as the inner core. The composites demonstrated high specific capacity and excellent long cycle stability, attributed to the synergistic effect of the yolk-shell structure and continuous nitrogen-doped carbon coating.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Electrochemistry
L. Guesnet, E. Bonnet, J. -m. Heintz, E. Chadourne, J. -c. Grenier, T. Chartier, P. -m. Geffroy, J. -m. Bassat
Summary: This study successfully sintered Pr6O11, a recently developed promising oxygen electrode for Solid Oxide Cells (SOCs). Dense pellets or thin films were used to accurately measure the ionic transport properties via the isotopic oxygen exchange method. Dilatometry experiments and sintering tests with different thermal cycles resulted in overcoming phase changes and achieving a sintered relative density of 95% for Pr6O11. The ionic transport properties of Pr6O11 were determined through Isotopic Exchange Depth Profiling (IEDP) measurements in the temperature range of 400 < T degrees C < 800.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Lina Sun, Liping Sun, Lihua Huo, Hui Zhao
Summary: A study has successfully synthesized porous carbon catalysts co-doped with nitrogen and oxygen by pyrolysis and oxidation. The catalyst exhibits high selectivity and generation rate for 2e(-) ORR, and the introduction of -COOH functional group enhances its performance. The study provides new insights for the production of H2O2 using MOF-derived carbon catalysts via electrocatalytic oxygen reduction.
Article
Chemistry, Physical
Wenzhuo Yu, Lihua Huo, Liping Sun, Hui Zhao
Summary: The study demonstrates the successful construction of a heterogeneous structure Cu3P@CoFe-LDH/CF, which shows promising electrocatalytic activity for overall water splitting. The p-n heterojunction between Cu3P and CoFe-LDH contributes to the enhanced charge-transfer reaction. This work provides a facile method to improve electrocatalytic activity and holds significant promise for renewable energy technology.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Yue Xin, Liping Sun, Lihua Huo, Hui Zhao
Summary: In this study, a self-supported cobalt nickel bimetallic phosphide nanoneedle array (Co-Ni-P/NF) is designed to achieve excellent bifunctional activity for the hydrogen evolution reaction (HER) and methanol electro-oxidation reaction (MOR). The p-n heterogeneous junctions formed between nickel phosphide and cobalt phosphide promote electron accumulation on CoP, enhancing HER activity, while the increased MOR activity is attributed to in situ generated holes in Ni2P. Benefiting from optimized interface/surface electronic structures, Co-Ni-P/NF exhibits a high current density of 100 mAcm(-2) at a low voltage of 1.45 V in a two-electrode electrolyzer. The faradic efficiency for both HER and MOR reaches 100%, demonstrating the excellent bifunctional catalytic activity of Co-Ni-P/NF nanoneedle arrays. This work provides insights into the development of novel bifunctional electrocatalysts for value-added chemical production and highly efficient hydrogen evolution.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Analytical
Chunjiao Liu, Liping Sun, Qiang Li, Lihua Huo, Hui Zhao
Summary: The phase structure, direct current conductivity, oxygen mobility characteristics, and electrochemical properties of cobalt-based high-entropy perovskite oxides with different alkaline earth metal contents were studied in this paper. It was found that by continuously substituting rare earth elements with alkaline earth elements in high-entropy materials, the content of oxygen vacancies increased and the electrochemical performance was enhanced. The high-entropy oxide La0.2Pr0.2Ba0.2Sr0.2Ca0.2CoO3 exhibited a chemical oxygen diffusion coefficient (Dchem) of 2.8 x 10-6 cm2 s-1 and a surface exchange coefficient (Kchem) of 9.1 x 10-3 cm s-1 at 700 degrees C. The anode-supported fuel cell using this high-entropy oxide achieved a peak power density of 792 mW cm-2 at 700 degrees C, showing excellent long-term stability and CO2 resistance.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Xu Yang, Sun Liping, Li Qiang, Huo Lihua, Zhao Hui
Summary: A high entropy spinel oxide was synthesized via the solvothermal method and its electrocatalytic properties for the oxygen evolution reaction (OER) were evaluated. The results showed that the multi-metallic element doping strategy in high entropy spinel oxide can enhance the adsorption ability of the catalyst, increase the covalency of the metal-oxygen bond, and improve the catalytic activity for OER.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
L. Guesnet, G. Aubert, S. Hubert, P. M. Geffroy, C. Aymonier, J. M. Bassat
Summary: This study presents an original method for shaping composite solid oxide fuel cell (SOFC) anodes using nickel or copper as metal. It compares the traditional infiltration method with the supercritical infiltration method and explains how the latter can improve the electrochemical performance of the cells.
SUSTAINABLE ENERGY & FUELS
(2022)
