Article
Chemistry, Inorganic & Nuclear
Daniel Munoz Gil, Khalid Boulahya, Maria Santamaria Santoyo, M. Teresa Azcondo, Ulises Amador
Summary: The study investigates the effects of iron and cobalt content on various properties of Eu2SrCoxFe2-xO7-delta materials, finding that the low cobalt content Eu2SrCo0.50Fe1.50O7-delta exhibits higher total conductivity and lower area-specific resistance, making it a suitable candidate as a cathode material for solid oxide fuel cells.
INORGANIC CHEMISTRY
(2021)
Article
Engineering, Multidisciplinary
Hongxia Gu, Meigui Xu, Yufei Song, Chuan Zhou, Chao Su, Wei Wang, Ran Ran, Wei Zhou, Zongping Shao
Summary: A new perovskite SrCo0.8Ti0.1Ta0.1O3-delta (SCTT) with high electrical conductivities, appropriate oxygen vacancy concentrations, and high bulk diffusion capability has been developed, showing favorable oxygen reduction reaction (ORR) activity at intermediate temperatures. The SCTT material exhibits high peak power density and durability in solid oxide fuel cells and protonic ceramic fuel cells, potentially accelerating the commercialization of IT-SOFC technology.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Chemistry, Physical
Na Li, Liping Sun, Qiang Li, Tian Xia, Lihua Huo, Hui Zhao
Summary: The spinel oxide CuBi2O4 (CBO) is prepared and characterized as a cathode material for intermediate temperature solid oxide fuel cells (IT-SOFCs). CBO shows better oxygen transport properties and lower polarization resistance values compared to traditional cathodes like LSM and LSCF. By forming a composite cathode with GDC, the polarization resistance of CBO can be further reduced, demonstrating its viability as a cathode material for IT-SOFC.
JOURNAL OF POWER SOURCES
(2021)
Article
Electrochemistry
Andrei Klyndyuk, Dzmitry S. Kharytonau, Michal Mosialek, Ekaterina A. Chizhova, Anna Komenda, Robert P. Socha, Malgorzata Zimowska
Summary: Double-doped NdBa(Fe, Co, Cu) (2)O5+delta layered perovskites were prepared and examined in this study. The physicochemical analysis showed that these materials have good electrical conductivity and linear thermal expansion coefficient, making them suitable as cathode materials for solid-oxide fuel cells.
ELECTROCHIMICA ACTA
(2022)
Review
Chemistry, Physical
Idris Temitope Bello, Shuo Zhai, Qijiao He, Qidong Xu, Meng Ni
Summary: Solid oxide fuel cells (SOFCs) have the potential to replace conventional thermal power plants due to their high efficiency and low emission. The development of high-performance and durable cathode materials is essential for improving SOFC performance. Research in cathode development for intermediate to low-temperature SOFCs has shown significant growth since 2000, with about 29% of countries globally involved in the research.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Changkun Cai, Manyi Xie, Ke Xue, Yu Shi, Shuting Li, Yuanyuan Liu, Shengli An, Hong Yang
Summary: This study successfully synthesized Ba2+-doped LBSCF materials and found that compared to undoped LSCF, Ba2+-doped LBSCF exhibits higher electrical conductivity and lower polarization resistance at 500-800 degrees Celsius, leading to a higher maximum power density for IT-SOFC technology.
Article
Materials Science, Multidisciplinary
Imdadullah Thaheem, Shamshad Ali, Muhammad Waqas, Ayaz Hussain, Afaque Manzoor Soomro, Zuhaibuddin Bhutto, Syed Ali Raza Shah, Wazir Muhammad, Jalal Shah
Summary: In this study, NiCo2O4 spinel was developed as a cathode material for IT SOFCs using the GNP method. Characterization showed good chemical compatibility at 900 degrees C and high power density at 750 and 800 degrees C, suggesting the potential of NiCo2O4 as a cathode material for IT SOFC applications.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
T. Ghorbani-Moghadam, A. Kompany, M. Golmohammad
Summary: The research showed that Fe doping in La0.7Sr1.3CoO4 can enhance the electrochemical performance of cathodic symmetrical cells, reducing the area-specific polarization resistance. These cathode materials hold promise for use in intermediate solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Wendi Yi, Yaopeng Tian, Chunling Lu, Biao Wang, Yaowei Liu, Shoushan Gao, Bingbing Niu
Summary: This study presents the development of a new perovskite oxide, BCZY, as a cathode material for SOFCs. The BCZY cathode demonstrates excellent stability, good ORR activity, and superior CO2 tolerance at intermediate temperatures. The results indicate that BCZY could be a potential cathode material for IT-SOFCs.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
A. P. Khandale, S. S. Bhoga
Summary: The dispersion of nanocrystalline Ce0.9Gd0.1O2-delta in superfine Sm1.5Sr0.5NiO4+delta is achieved using a modified precipitation technique, inhibiting grain growth and providing morphological stability. The concentration-dependent behaviors of ionic conductivity, surface exchange rate, and electrode polarization resistance are comprehended using a percolation model. Improvement in electrochemical performance is correlated to the nano crystallite size of Ce0.9Gd0.1O2-delta.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
E. Squizzato, G. Carollo, A. Glisenti
Summary: This study focuses on using CFMO as a cathode material, enhancing its electronic conductivity through magnesium doping, and successfully activating the material with FeOx nanoparticles, demonstrating stability under various atmospheric conditions. The final results show that the CFMO composite with 15% Fe2O3 exhibits the best ASR value at 800 degrees Celsius.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Xuebai Zhang, Yingmin Jin, Yunjian Jiang, Xin Zong, Yumeng Li, Yueping Xiong
Summary: This study prepared highly active and robust La0.8Sr0.2Co0.2Fe0.8O3-delta (LSCF) nanofibers based composite cathodes with core-shell structure using electrospinning combined with sol-gel method. The GDC coated LSCF nanorods composite cathode with GDC:LSCF mass ratio of 0.51:1 achieved optimal electrochemical performance, reaching a polarization impedance of 0.03 omega cm2 at 800 degrees C. The composite cathode exhibited no obvious degradation for constant operating 200 h and showed higher long-term operation stability and Cr poisoning tolerance due to the application of GDC coating.
APPLIED SURFACE SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Wan Nor Anasuhah Wan Yusoff, Nur Nadhihah Mohd Tahir, Nurul Akidah Baharuddin, Mahendra Rao Somalu, Andanastuti Muchtar, Lai Jian Wei
Summary: The solid oxide fuel cell (SOFC) is a highly anticipated green and sustainable energy technology. This study successfully produced cathode material with a desired microstructure by improving the oxidation-reduction process and utilizing specific processing techniques. The study also highlights the importance of processing techniques in optimizing electrochemical performances.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Chemistry, Physical
Fei Han, Lijun Guo, Haochen Shi, Jialing Sun
Summary: Perovskite-type cathode Ba1-xCo0.7Fe0.2Nb0.1O3-delta (B1-xCFN, x = 0.0-0.15) shows a cubic perovskite structure with decreasing porosity as A-site deficiency increases, and the interfacial polarization resistance of B0.9CFN drops significantly at 800 degrees Celsius. Additionally, lattice oxygen generation is the major rate-limiting step when oxygen partial pressure is higher than 0.01 atm, and Ba deficiency accelerates the ionization process of oxygen atoms in the cathode bulk. The performance of single-cell B0.9CFN/SDC/Ni0.9Cu0.1-SDC is superior to other cathodes at operation temperature, indicating B0.9CFN as a better cathode for IT-SOFC.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Zhenwei Wang, Haibin Sun, Jiao Li, Xue Guo, Qiangqiang Hu, Zanzhong Yang, Fangyong Yu, Guochang Li
Summary: By infiltrating ESB, the polarization resistances and activation energy of LSCF cathodes were significantly reduced, improving the oxygen reduction reaction process and enhancing the performance of intermediate-temperature solid oxide fuel cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Liang Wang, Tian Xia, Liping Sun, Qiang Li, Hui Zhao
Summary: The potential of Ca-doped Bi1-xCaxFeO3-delta (BCFx) oxides as cathode materials for solid oxide fuel cells (SOFCs) is evaluated. The phase structure, thermal expansion behavior, electrical conductivity, and electrocatalytic properties for the oxygen reduction reaction (ORR) of BCFx cathodes are systematically characterized. The Bi0.8Ca0.2FeO3-delta (BCF0.2) cathode shows the highest oxygen vacancy concentration and significant electrocatalytic activity, with the lowest polarization resistance (0.11 omega cm(2)) and the largest exchange current density of 41.91 mA cm(-2) at 700 degrees C. The BCF0.2 cathode-based single cell exhibits excellent output performance and stability over 60 hours, achieving a maximum power density of 760 mW cm(-2) at 700 degrees C. This work highlights the importance of Ca-doping strategy in enhancing the electrocatalytic activity of cathode electrocatalysts in SOFCs.
Article
Mechanics
Liping Sun, Tianqi Zhao, Qingyan He, Tao Chen
Summary: This work investigates wave propagation in nonlinear elastic metamaterials. Two nonlinear mass-in-mass chains are used to model the metamaterial, one with linear local resonators and the other with nonlinear local resonators. Using the perturbation method, the authors obtain amplitude-dependent dispersion relations and observe interesting bandgap characteristics. They study these characteristics, focusing on the bandgap bounding frequencies, and express the functional relationship between bounding frequency and amplitude using a hybrid method. The numerical results show the disappearance of bandgaps as amplitude increases in both chains, with differences in the appearance of inflection points.
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
Electrochemistry
Lina Sun, Liping Sun, Lihua Huo, Hui Zhao
Summary: This study focuses on the electrochemical production of H2O2 using N and F co-doped porous carbon embedded Co nanoparticles. The composite material shows exceptional selectivity, with a high rate of producing H2O2. The addition of F atom modulates the catalyst's Zeta potential and alters the electronic configuration, resulting in improved uptake of O2 and preventing further degradation.
ELECTROCHIMICA ACTA
(2023)
Article
Computer Science, Artificial Intelligence
Qingying Yu, Feng Yang, Zhenxing Xiao, Shan Gong, Liping Sun, Chuanming Chen
Summary: Fast-developing mobile location-aware services generate a large volume of trajectory data, but this data contains not only location information, but also sensitive personal information. Existing privacy-preserving trajectory publishing methods do not adequately protect sensitive attributes. To address this, we propose a trajectory personalized privacy preservation method based on multi-sensitivity attribute generalization and local suppression. Our method sets different security levels for each trajectory and generalizes sensitive attributes based on privacy preservation levels, while also locally suppressing data at risk of privacy leakage. Experimental results demonstrate that our method improves data availability while preserving privacy.
INTELLIGENT DATA ANALYSIS
(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
Multidisciplinary Sciences
Junmei Guo, Wei Zhang, Liping Sun, Hongfang Yu, Yuzhe Wang, Li Feng, Hao Yang
Summary: This study investigated the impact of KIF2C on the progression of NSCLC. It was found that KIF2C was up-regulated in NSCLC cells and its overexpression promoted cell proliferation, migration, and invasion while inhibiting cell apoptosis. KIF2C was identified as a key target of miR-186-3p and was negatively regulated by it. Additionally, KIF2C influenced the AKT-GSK3β-β-catenin pathway. Overall, KIF2C acts as an oncogenic factor in NSCLC and contributes to its progression.
SCIENTIFIC REPORTS
(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, Multidisciplinary
Shibo Sun, Liwei Fang, Hui Guo, Liping Sun, Yong Liu, Yuanhui Cheng
Summary: Researchers designed a bifunctional liquid fuel cell to produce V3.5+ electrolytes and generate power energy using formic acid and V4+ as fuels and oxidants. This method reduces the production cost of V3.5+ electrolytes by 16.3% compared to traditional electrolysis method. The fuel cell has a maximum power output of 0.276 mW cm(-2) and prepared vanadium electrolytes show similar energy conversion efficiency and capacity retention to commercial ones.
Article
Chemistry, Multidisciplinary
Shijia Yuan, Lisha Xia, Chenxi Wang, Fan Wu, Bingjie Zhang, Chen Pan, Zhiran Fan, Xiaoguang Lei, Raymond C. Stevens, Andrej Sali, Liping Sun, Wenqing Shui
Summary: In this study, the conformational ensemble of an activated GPCR-G protein complex is mapped at near-atomic resolution using cross-linking mass spectrometry (CLMS) and integrative structure modeling. The integrative structures reveal heterogeneous conformations for potential alternative active states of the GLP-1 receptor-Gs complex, showing marked differences from the cryo-EM structure. The functional significance of interface residue contacts observed only in the integrative structures is validated through alanine scanning mutagenesis coupled with pharmacological assays.
ACS CENTRAL SCIENCE
(2023)
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
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
Kun Liu, Tingting Zhang, Xiaodong Liu, Tingyu Wang, Yan Su, Hong Wang, Liping Sun, Xiaoqun Cao, Yushui Bi, Kaiqi Wang, Li Zhang
Summary: In this study, we found that the Pt-ZrO2 interface can catalyze the gas-phase hydrogenation of acetone to isopropanol at low temperatures and pressures. The catalytic activity of the Pt-ZrO2 interface increases with the increase in reduction temperature to 200 degrees C and remains stable at further reduction to 300 degrees C. This research provides important support for the rational design of high-performance catalysts.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
