Article
Chemistry, Physical
E. Kazakevic, A. Kezionis, M. Nowagiel, T. Plocinsk, T. K. Pietrzak
Summary: The temporal alteration of the impedance spectra of the mixed ionic-electronic conductor Na3VTi(PO4)2F3 was studied through heat treatment near its glass transition temperature. Various relaxation processes were observed in the spectra and analyzed using the distribution of relaxation times (DRT) method. The evolution of the DRT over time showed the transformation from a single bell-shaped peak to a double peak, representing the transition from the glassy phase to the crystalline phase. The appearance of a third peak was attributed to the relaxation process in the inter-grain area.
JOURNAL OF POWER SOURCES
(2023)
Article
Energy & Fuels
Zetao Li, Huihua Feng, Boru Jia, Zhengxing Zuo, Bing-Ang Mei
Summary: For the thermal impedance spectroscopy measurement of EDLC systems, this study uses distribution of relaxation times (DRT) analysis to interpret the thermal processes. The DRT plots show three distinct peaks, with the area representing the thermal resistance contribution and the time constant representing the speed of each process. The peaks correspond to heat conductions in solid, interfacial, and fluid-involved paths, respectively. The area of peaks is strongly affected by electrode compression, and replacing the fluid or changing solid-fluid ratio can cause a shift in the time constant of fluid-involved heat transfer peak.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Shuai Wang, Bo Wei, Zhe Lu
Summary: LSFW electrode shows good phase and structural stability under different atmospheres, low polarization resistance, and excellent performance at 800 degrees Celsius, indicating promising applications in solid oxide fuel cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Seungyeon Jo, Hyeon Gwon Jeong, Yo Han Kim, Dragos Neagu, Jae-ha Myung
Summary: The promising anode material decorated with Cu nanoparticles synthesized via in-situ exsolution from perovskite exhibits excellent thermal stability at 600 degrees C in H-2 atmosphere and rapid growth capability. Compared to conventional infiltration process, this synthetic method allows for homogeneous distribution of nanoparticles on the substrate.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Kun Zheng, Jakub Lach, Pawel Czaja, Michal Gogacz, Patryk Czach, Agnieszka Brzoza-Kos, Piotr Winiarz, Jie Luo
Summary: The chemical modification of perovskites through tungsten doping in Sr2Fe2-xWxO6-delta has shown significant impact on the physicochemical properties and electrochemical performance of electrode materials for solid oxide cells. A high-performance quasi-symmetrical solid oxide cell design has been proposed, demonstrating excellent power outputs and good current density in various conditions. The in situ exsolved metallic iron nanoparticles decorated on the anode contribute to the excellent electrochemical performance of cells.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Junil Choi, Minho Kim, Song Kyu Kang, Jihoon Kim, Jungseub Ha, Hyun Ho Shin, Taiho Park, Won Bae Kim
Summary: In this study, a bifunctional electrode material for electrochemical oxidations and CO2 electrolysis was successfully prepared. By in situ phase transition and exsolution of Ni-Fe alloy nanoparticles in a reducing atmosphere, NiFe-R.P.PSFNNb exhibited superior electrochemical performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Thermodynamics
Runqi Wang, Runlin Wang, Yun Wang
Summary: Nanostructured fibrous electrodes based on multiwall carbon nanotubes were studied for thermal conductivity, volume change, and conductivity enhancement with interstitial liquids. The addition of liquids significantly improved conductivity, with liquid water showing the largest enhancement effect.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2021)
Article
Chemistry, Applied
Junkai Wang, Lei Fu, Jiaming Yang, Ke Wu, Jun Zhou, Kai Wu
Summary: Symmetrical solid oxide fuel cells (SSOFCs) have the potential to be alternative energy conversion devices due to their simple fabrication process and low cost. Perovskite La0.6Ce0.1Sr0.3Fe0.95Ru0.05O3-d (LCSFR) has been synthesized and evaluated as a high-performance electrode for SSOFCs, demonstrating excellent performance at 800 degrees C.
JOURNAL OF RARE EARTHS
(2021)
Article
Chemistry, Physical
Jing Yan, Huili Chen, Ya Wei Li, Si-Dian Li, Zongping Shao
Summary: The PSCFNx catalysts are used as electrodes in symmetric solid oxide fuel cells (SOFCs) for the hydrogen oxidation reaction (HOR) and oxygen reduction reaction (ORR). The Ni doping in PSCFNx improves the performance of ORR and HOR by reducing the polarization resistance. The PSCFN0.2 exhibits excellent performance as an electrode material for a symmetric SOFC.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Multidisciplinary
W. Xu, B. Zhang, K. Du, X. Y. Li, K. Lu
Summary: By means of cryogenic plastic deformation, a high proportion of relaxed grain boundaries can be generated in the Al-5Mg alloy, which is essential for stabilizing nanostructured alloys.
Article
Engineering, Chemical
Xi Chen, Jietao Wang, Na Yu, Yao Wang, Dong Zhang, Meng Ni, Fanglin Chen, Tong Liu, Mingyue Ding
Summary: A full ceramic electrode of NiFe@SFMNi@YSZ with hierarchically oriented open, straight pores was prepared and utilized for direct propane-fueled solid oxide fuel cell. The electrode showed excellent stability and performance due to the introduction of uniformly distributed SFMNi nano-catalyst network and enhanced gas diffusion process. The in-situ exsolved Ni-Fe alloy nano-catalysts effectively activated the fuel gas oxidation reaction and decreased the activation resistance.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Optics
Aleksey Korobenko, Sabaa Rashid, Andrei Yu. Naumov, David M. Villeneuve, David A. Reis, Pierre Berini, Paul B. Corkum, Giulio Vampa
Summary: Nanostructured optical surfaces provide precise control over linear and nonlinear light interactions, generating high-order harmonics and distributing them on the nanoscale features of the surface. We demonstrate a lensless imaging approach that resolves the amplitude and phase of nonlinear polarization at the active nanostructured surface of an MgO crystal. Mapping the near-field distribution of high harmonics is crucial for optimizing the functionality of high-harmonic metasurfaces and integrating them onto chips.
Article
Energy & Fuels
Lijie Zhang, Yihang Li, Binze Zhang, Yanhong Wan, Zheqiang Xu, Shaowei Zhang, Tenglong Zhu, Changrong Xia
Summary: This study developed a high performance fuel electrode material by utilizing in-situ metal exsolution to form FeNi3 nanoparticles, which improved the electrochemical performance of RSOC and demonstrated stable performance through operation tests.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Weilin Zhang, Yucun Zhou, A. Mohammed Hussain, Dong Song, Yohei Miura, Yu Chen, Zheyu Luo, Nicholas Kane, Yinghua Niu, Nilesh Dale, Yosuke Fukuyama, Meilin Liu
Summary: This study focuses on the development of durable nanostructured electrodes for solid oxide fuel cells (SOFCs) using a simple and cost-effective method. The symmetrical cells and single cells fabricated in this work exhibit good performance and stability, indicating a promising pathway for high-performance and durable SOFCs powered by natural gas.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Electrochemistry
Bora Jeong, Da-Ae Lim, Hye-Min Kim, Jeong-Yun Kim, Dong-Won Kim
Summary: A three-dimensional quasi-solid-state electrolyte with high ionic conductivity was synthesized and used in a lithium-ion battery to replace flammable liquid electrolytes, showing good capacity retention and superior thermal safety compared to conventional liquid electrolyte-based cells.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Engineering, Environmental
Qizhao Luo, An He, Shihao Xu, Mengyu Miao, Tong Liu, Bin Cao, Kunpeng Shan, Bin Tang, Xuejiao Hu, Lu Huang, Haifeng Jiang
Summary: This study reports a novel hybrid system that utilizes low-grade heat energy for desalination and power generation. By coupling a thermal osmosis unit and an electrokinetic power generator, the system can simultaneously produce fresh water and electricity. The results show that at a temperature difference of 50 degrees C, the system achieves a high fresh water production rate and output power density.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Yingsheng Li, Jia Wang, Jiayi He, Rui Zeng, Mengyu Miao, Yao Wang, Cong Ren, Tong Liu
Summary: This study introduces a novel carbon nanotubes (CNTs)@fly ash Janus composite membrane with hierarchically oriented straight pores, prepared using industrial solid waste fly ash and white pollutant waste plastic. The membrane exhibits good hydrophobicity and excellent gas permeability, and when used for solar membrane distillation, it achieves a high interfacial evaporation rate. It has the potential to achieve near-zero solid waste emission and efficient seawater desalination.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Jian Zhou, Tong Liu, Jing Zhang, Ling Zhao, Wei He, Yao Wang
Summary: Efficient and stable bifunctional oxygen electrocatalysts are crucial for the research and development of rechargeable zinc-air batteries. In this study, ultrafine cobalt-free perovskite type oxide nanofibers and nanoparticles were prepared and studied for their electrochemical behaviors in the field of zinc-air batteries. The results showed that the nanofiber catalyst exhibited better electrocatalytic activities and more durable stability compared to the nanoparticle catalyst.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Dong Zhang, Wenqiang Yang, Zhenbin Wang, Cong Ren, Yao Wang, Mingyue Ding, Tong Liu
Summary: This study reports a Ru-promoted perovskite-type cathode for the electrochemical reduction of CO2, which effectively improves the low current density, low Faradaic efficiency, and high overpotential of the CO2 reduction reaction. The Ru-doped cathode significantly enhances the CO2 reduction current density and reduces the electrode polarization resistance, leading to improved stability of the solid oxide CO2 electrolyzer. Relaxation time distribution analysis indicates that Ru doping activates the rate-determining processes of CO2 adsorption, dissociation, and activation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Cong Ren, Pan Xu, Yanxiang Zhang, Tong Liu
Summary: In this study, three different anode microstructures were fabricated in micro-tubular solid oxide fuel cells (MT-SOFCs) by using different polymer binders. A superior anode substrate with graded pore distribution was obtained by utilizing a PESf/PEI blend material as the polymer binder. The maximum power density of the cell fabricated by PESf/PEI blend polymer binder reached 630 mW center dot cm-2 at 750 degrees C, which is much higher than those of PEI polymer binder and PESf polymer binder at the same temperature. The improved electrochemical performance can be attributed to the accelerated gas transportation in the anode.
APPLIED SURFACE SCIENCE
(2023)
Review
Medical Laboratory Technology
Chuanzhu Wang, Qingbao Wang, Tong Liu, Jun Zhu, Boke Zhang
Summary: Pulmonary fibrosis (PF) is a respiratory disease that greatly affects patient survival, and serum KL-6 has been identified as a frequent biomarker for detecting PF. This study analyzed multiple articles and found that KL-6 has high sensitivity and specificity in diagnosing PF.
CLINICAL BIOCHEMISTRY
(2023)
Article
Chemistry, Physical
Man Xiong, Xuan Bie, Yawei Dong, Ben Wang, Qunchao Zhang, Xuejun Xie, Tong Liu, Ronghua Huang
Summary: Silicon-containing polyester was used as encapsulating material for silicon nano powders via electrospinning, and the encapsulated nano fibers maintained their structure even after high-temperature treatment. The cycling stability of the encapsulated silicon nano powders in lithium-ion batteries was improved.
Article
Engineering, Chemical
Xi Chen, Jietao Wang, Na Yu, Yao Wang, Dong Zhang, Meng Ni, Fanglin Chen, Tong Liu, Mingyue Ding
Summary: A full ceramic electrode of NiFe@SFMNi@YSZ with hierarchically oriented open, straight pores was prepared and utilized for direct propane-fueled solid oxide fuel cell. The electrode showed excellent stability and performance due to the introduction of uniformly distributed SFMNi nano-catalyst network and enhanced gas diffusion process. The in-situ exsolved Ni-Fe alloy nano-catalysts effectively activated the fuel gas oxidation reaction and decreased the activation resistance.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Kun Zhang, Dong Zhang, Yao Wang, Yihang Li, Cong Ren, Mingyue Ding, Tong Liu
Summary: This study presents a novel perovskite electrode that is stable and flexible for long-term operation of solid oxide electrolysis cells (SOECs). The electrode undergoes multiple redox cycles, demonstrating its structural stability and nanoparticle reversibility. The size and population density of the exsolved nanoparticles can be manipulated during the redox process. The symmetric cell with the electrode shows stable polarization resistance for 450 hours and even activates after redox cycling, attributed to the higher quantity and larger specific surface area of the regenerated nanoparticles. Moreover, the electrode exhibits excellent electrochemical performance for CO2 reduction reaction, providing new options for efficient and durable CO2 electrolysis.
Article
Engineering, Chemical
Xi Chen, Na Yu, Idris Temitope Bello, Dong Zhang, Jian Zhou, Yao Wang, Meng Ni, Tong Liu
Summary: A novel phase inversion tape casting technology was used to fabricate an advanced full ceramic bilayer composite cathode support, which exhibited enhanced oxygen reduction reaction kinetics activity and long-term operational stability. The introduction of a functional layer with an open and straight pore structure significantly enhanced gas diffusion and reduced concentration resistance, while increasing the three phase boundaries density for the oxygen reduction reaction. This full ceramic cathode support has great potential in the application of solid oxide fuel cells.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Dong Zhang, Yao Wang, Yuhan Peng, Yao Luo, Tong Liu, Wei He, Fanglin Chen, Mingyue Ding
Summary: Excessive emission of carbon dioxide (CO2) is a serious threat to the environment and global prosperity. Solid oxide electrolysis cell (SOEC) has gained increasing attention as an efficient method for CO2 reduction reaction (CO2RR) and renewable energy storage. Symmetrical SOEC (SSOEC) is considered versatile due to its simplified process, high compatibility, and low cost. However, finding electrode materials that meet the demanding catalytic activity requirements for both CO2RR and oxygen evolution reaction (OER) remains a challenge.
ADVANCED POWDER MATERIALS
(2023)
Article
Chemistry, Physical
Dong Zhang, Jian Zhou, Yao Luo, Yao Wang, Xiaoyu Zhang, Xi Chen, Tong Liu, Mingyue Ding
Summary: Solid oxide electrolysis cell (SOEC) is a device that can efficiently and cleanly reduce carbon dioxide to carbon monoxide. The traditional powdery cathode has disadvantages that hinder the development of SOEC. In this study, a cobalt-free perovskite oxide nanofiber cathode is explored and shows enhanced catalytic activity for CO2RR.
JOURNAL OF POWER SOURCES
(2023)
Article
Engineering, Chemical
Dong Zhang, Wenqiang Yang, Zhenbin Wang, Cong Ren, Yao Wang, Mingyue Ding, Tong Liu
Summary: In this research, a new Ru catalyst cathode was investigated for electrochemical CO2 reduction reaction (CO2RR). The Ru catalyst significantly improved the current density and catalytic efficiency of CO2RR, reduced the electrode polarization resistance, and exhibited good stability. Relaxation time analysis and density functional theory calculations revealed that the Ru catalyst activated the adsorption, dissociation, and activation processes of CO2 on the cathode surface.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)