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, Multidisciplinary
Kyeong Eun Song, Sung Hun Woo, Seung Wook Baek, Hyunil Kang, Won Seok Choi, Jun Young Park, Jung Hyun Kim
Summary: In the SmBa1-xCaxCo2O5+d oxide systems, different compositions exhibited various electrical conductivity and metal-insulator transition behaviors. Among them, SBCCO-0.8 showed the highest electrical conductivity, while SBCCO-0.9 demonstrated excellent ASR characteristic at high temperature. The crystal structures of SBCCO were identified as orthorhombic, with unique X-ray diffraction peaks.
FRONTIERS IN CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Dong Guo, Aoye Li, Chunling Lu, Dongchao Qiu, Bingbing Niu, Biao Wang
Summary: Developing cathode materials with high stability and strong catalytic activity is crucial for the commercialization of solid oxide fuel cells (SOFCs). In this study, a cobalt-free cathode material was prepared and its electrochemical performance was systematically investigated. The results showed promising potential of the material for SOFCs applications.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Zujun Nie, Jingping Wang, Tian Xia, Guixiang Wang
Summary: A family of promising cathode materials Pr(1-x)Ca(x)Ba(0.94)Co(2)O(5+delta) is reported for efficient ORR activity and outstanding stability in intermediate-temperature solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Ziling Wang, Caichen Yang, Jian Pu, Yunfeng Tian, Jian Wang, Francesco Ciucci, Bo Chi
Summary: Morphology regulation is an effective way to improve the electrocatalytic activity of SOFC cathodes, and nanofibers have been confirmed to have advantages in this aspect. This study employed a sintering-free method to in-situ self-assemble LCaFN nanofibers onto the YSZ electrolyte surface, which showed impressive performance compared to previous work. These findings demonstrate the promising strategy of combining fiber cathodes and in-situ self-assembly techniques for high-performance SOFCs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Electrochemistry
Zhiheng Li, Mengran Li, Zhonghua Zhu
Summary: Acceleration of the oxygen reduction reaction at the cathode is crucial for low-temperature solid oxide fuel cells. Understanding the interactions between surface and bulk of the cathode materials is important for electrode kinetics and overall efficacy. Future research directions include investigating the role of oxygen vacancy, rational modulation of surface-bulk interactions, and the use of advanced fabrication techniques.
ELECTROCHEMICAL ENERGY REVIEWS
(2022)
Article
Chemistry, Physical
Huiying Qi, Baofeng Tu, Mojie Cheng, Tonghuan Zhang
Summary: The study developed a highly active perovskite nanocomposite for intermediate-temperature solid oxide fuel cells, which showed superior performance through nano-scale assembly and active surface oxygen species, enhancing oxygen catalysis.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Daniel Sikstrom, Aroosa Javed, Shoaib Muhammad, Venkataraman Thangadurai
Summary: Perovskite-type Nd0.75Ba0.25Co0.8Fe0.2O3-delta (NBCF25) was synthesized via solid-state method and showed a single-phase orthorhombic structure. It exhibited minor reactivity with Sr and Mg-doped LSGM when sintered at 1050 degrees C. The sintered sample pellets showed a maximum conductivity of 674 S/cm at 700 degrees C. AC electrochemical impedance spectroscopy measurements on LSGM pellets revealed that NBCF25 has the lowest area-specific resistance of 0.07 omega cm(2) at 800 degrees C in air. Impedance spectroscopy genetic programming was used to understand the oxygen reduction reaction.
Article
Nanoscience & Nanotechnology
Guangdong Li, Yunjie Gou, Xiaojie Cheng, Zhe Bai, Rongzheng Ren, Chunming Xu, Jinshuo Qiao, Wang Sun, Zhenhua Wang, Kening Sun
Summary: The successful implementation of oxygen vacancy engineering and the introduction of Zr have greatly improved the performance of oxygen electrode materials, leading to enhanced efficiency in reversible solid oxide cells. The addition of Zr has increased the number of oxygen vacancies in the electrode material, improving the overall performance of the cells.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Junling Meng, Na Xu, Xuxu Wang, Fen Yao, Chuan Tian, Xiaojuan Liu, Lina Zhao, Zhanlin Xu
Summary: In this study, a highly efficient and stable cathode material for intermediate-temperature SOFCs, namely Bi-efficient Sr-free perovskite, was developed. The important role of Bi-vacancy in boosting the activity and durability of the cathode was illustrated.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Kyeong Eun Song, Harald Schlegl, Hyunil Kang, Wonseok Choi, Jung Hyun Kim
Summary: The composition of layered perovskite SmBa0.5Sr0.5Co2O5+d was modified to different non-stoichiometric compositions by altering the substitution amount of Ba and Sr. SmBa0.45Sr0.5Co2O5+d (SBSCO-0.45/0.5) exhibited the lowest area specific resistance (ASR) due to its largest area % caused by high binding energy (HBE) of O1s in X-ray photoelectron spectroscopy (XPS) analysis and smaller unit cell volume compared to other compositions. SmBa0.5Sr0.48Co2O5+d (SBSCO-0.5/0.48), with the least decrease in oxygen content and the largest area % of Co3+ and Co4+ coexistence regions of Co2p in XPS analysis, showed the highest electrical conductivity. The electrical conductivity values and behaviors of porous SBSCO-0.45/0.5 and SBSCO-0.5/0.48 were not significantly different. Comparison between single-cell performances with composite cathodes of SBSCO-0.45/0.5 and SBSCO-0.5/0.48 with CGO91 revealed that the single-cell with SBSCO-0.45/0.5 and CGO91 cathode exhibited higher maximum power density.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Ceramics
Quan Yang, Huanhuan Ma, Yanzhi Ding, Xiaoyong Lu, Yonghong Chen, Dong Tian, Bin Lin
Summary: In this study, a Na+ doping strategy is proposed to activate and stabilize the triple-conducting layered perovskite oxide for high-performance solid oxide fuel cells (SOFCs) based on yttria-stabilized zirconia (YSZ). The results show that Na+ doping enhances the electrochemical properties of the cathode, leading to improved performance. High-temperature XRD and the oxygen temperature-programmed desorption (O-2-TPD) confirm the improved structural stability of the doped cathode. This work demonstrates the potential of Na+ doping for perovskite cathodes and its effectiveness in promoting fuel cell performance.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Yaowei Liu, Yuchen Cao, Shisheng Sun, Chunling Lu, Biao Wang, Gaobin Liu, Shoushan Gao, Bingbing Niu
Summary: This study discusses the performance of double perovskite Pr0.2Sr1.8CoTiO6- δ (P02STC) as a potential cathode material for solid oxide fuel cells (SOFCs). Experimental results demonstrate that P02STC cathode exhibits good electrochemical performance, structure stability, and excellent tolerance to CO2 poisoning. It shows high power density and stability, making it a promising candidate cathode material for SOFCs.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Liang-Mei Xue, Song-Bo Li, Sheng-Li An, Ning Li, Hui-Pu Ma, Meng-Xin Li
Summary: This study investigates the implications of transition-metal Zn doping at the B-site on the crystal structure, average thermal expansion coefficient (TEC), electrocatalytic activity, and electrochemical performance of LaBaFe2O5+delta. The results show that Zn2+ doping does not change the crystal structure, but increases the unit cell volume and lattice expansion. With increasing doping amount, the oxygen vacancy concentration and Fe4+ content also increase. TEC decreases while conductivity reaches the highest value at x = 0.1. Zn2+ doping reduces polarization resistance and enhances electrochemical performance.
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
Engineering, Environmental
Zhenglin Chen, Fang Li, Likun Zhang, Zhengyang Lei, Canhui Yang, Chufan Xiao, Lijin Lian, Xi Yuan, Gul Ijaz, Jia'e Yang, Zijun Lin, Yunfeng He, Ping Zhang, Dongmei Yu, Peiwu Qin
Summary: This study demonstrates solvent-free ionic elastomers (ICEs) with high transparency, intrinsic conductivity, and stretchability at room temperature, and with self-healing ability. These ICEs can be used as all-solid-state human-machine interactive touch panels and can sense finger position over a broad temperature range. The functionality of the wearable touch panel has also been demonstrated.
CHEMICAL ENGINEERING JOURNAL
(2023)
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
Engineering, Environmental
Yinghui Mo, Liping Sun, Lu Zhang, Jianxin Li, Jixiang Li, Xiuru Chu, Liang Wang
Summary: This study proposes a compact dual-chamber electrocatalytic biofilm reactor (ECBR) for the decolorization and mineralization of azo dyes. Compared with other treatment methods, ECBR shows significant advantages in terms of COD removal efficiency and energy consumption reduction.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2023)
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
Environmental Sciences
Pei Zhou, Yang Wang, Jane Liu, Linglin Xu, Xiang Chen, Likun Zhang
Summary: This study investigated the difference between global and regional aerosol models and their impact on satellite AOD retrieval. It found that aerosols can be classified into five types with different optical and physical parameters. The regional aerosol model performed better than the global model in simulating air pollution events and AOD.
ATMOSPHERIC ENVIRONMENT
(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
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
Biochemical Research Methods
Yijun Li, Wei Wei, Yi Ma, Jingwen Shan, Yanan Chu, LiKun Zhang, Danni Liu, Xueping Ma, Guohua Zhou, Haiping Wu
Summary: We developed a simple and convenient genotyping assay using oral swabs for sample preparation, in which PCR coupled with nested invasive reaction and visualisation based on gold nanoparticle probes were performed in a closed tube. This method relies on the single base recognition property of the invasive reaction and allows rapid and accurate detection of CYP2C19*2 and CYP2C19*3 genotypes. The typing results of 20 oral swab samples were consistent with pyrosequencing, indicating the great potential of this method for SNP typing in source-limited regions to guide personalised medicine.
IET NANOBIOTECHNOLOGY
(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
Jiayan Teng, Tian Xia, Qiang Li, Liping Sun, Hui Zhao
Summary: Praseodymium-deficient Pr1.90_.Ce0.1CuO4 oxides are evaluated as potential oxygen electrodes for solid oxide fuel cells (SOFCs). The introduction of Pr-deficiency promotes the oxygen vacancy concentration, improving electrocatalytic activity for oxygen reduction reaction (ORR). The Pr1.75Ce0..1CuO4 (P1.75CC) component demonstrates excellent electrode performance with low polarization resistance (0.025 U cm2) and high peak power density (1.11 W cm_2) at 700℃.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
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
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, 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)
