Article
Energy & Fuels
Shuai Wang, Hui Yong, Jiwei Yao, Jiangwei Ma, Baosheng Liu, Jifan Hu, Yanghuan Zhang
Summary: The Mg90Ce5Y5 alloy was prepared by vacuum induction melting, and Mo, MoO2, and MoO3 were added to it through mechanical ball milling. The microstructure, phase evolution, hydrogen storage thermodynamics, and kinetics were studied using XRD, SEM, TEM, PCT, and DSC methods. The results showed that the internal phases of the Mo catalyzed alloy transformed into MgH2, CeH2.73, YH3, and Mo phases upon hydrogen absorption, while the hydrogenated alloy consisted of MgH2, CeO2, YH3, MgO, and Mo phases for the MoO2 catalyzed alloy, and MgH2, MgO, CeO2, Y2O3, and Mo phases for the MoO3 catalyzed alloy. REDOX reactions occurred between MoO2, MoO3, and the inner phase of the alloy. Compared to the others, the Mo catalyzed alloy exhibited a higher hydrogen absorption saturation ratio, and the MoO2 catalyzed alloy required less time to release H2 compared to the Mo and MoO3 catalyzed alloys. The dehydrogenation activation energy (Edes) of the samples showed an increasing trend in the order of MoO2 catalyzed alloy (110.18 kJ/mol).
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Multidisciplinary
Ercan Karakose, Mustafa Keskin
Summary: The experimental results show that the alloy structure and hardness vary significantly under different solidification methods, with the microhardness values of the rapidly solidified alloy being much higher than those of the conventionally solidified alloy.
Article
Chemistry, Physical
Huazhou Hu, Songsong Li, Wenhao Zhou, Houqun Xiao, Xincong He, Xiaoxuan Zhang, Ruizhu Tang, Chuanming Ma, Qingjun Chen
Summary: This study investigates the synthesis and characterization of a low-cost and high-performance Ti45Cr52Mo3 alloy for hydrogen storage. The alloy exhibits a significant dehydriding density of 2.4 wt % at 85 degrees C, indicating its potential as a hydrogen storage material. The melt-spinning process improves compositional uniformity and restricts the phase transformation, leading to an increased hydrogen absorption capacity and an effective dehydriding density of 2.40 wt %.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Ceramics
H. Zhou, Z. Ding, Y. A. Chen, Z. Q. Lan, S. F. Guo, F. Spieckermann, V. Zadorozhnyy, J. Tan, F. S. Pan, J. Eckert
Summary: The hydrogen storage properties of amorphous and crystalline Mg85Ni5Y10 alloys were compared, and the melt-spun alloy showed higher storage capacity and faster kinetics than the induction-melted alloy. The reversible storage capacity of the melt-spun alloy was 4.2 wt% H2, while the induction-melted sample had 3.8 wt% at 200 degrees C. Furthermore, the melt-spun alloy could release 4.1 wt% H2 within 30 min at temperatures above 275 degrees C, close to its theoretical hydrogen storage capacity of 4.2 wt%.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
Jiwei Yao, Hui Yong, Yang Zhao, Chengyan Sun, Xianliu Xu, Baosheng Liu, Dongliang Zhao, Jifan Hu, Yanghuan Zhang
Summary: The Mg90Ce5Y5 + x wt% ZnF2 (x = 3, 6, 10, 15) composites were prepared by mechanical ball-milling, and their effects on the hydrogen absorption and desorption properties of Mg90Ce5Y5 alloy were investigated. The addition of ZnF2 introduced MgF2 and MgZn2 phases, which acted as catalysts and improved the hydriding-dehydriding characteristics. Mg90Ce5Y5 + 6 wt% ZnF2 composites exhibited the fastest hydrogen adsorption/desorption kinetics and lower decomposition temperatures.
MATERIALS CHARACTERIZATION
(2023)
Article
Chemistry, Physical
Yanyan Shao, Jiantao Wang, Yao Liu, Xuefei Miao, Danling Fu, Siyu Cheng, Pengwei Guo, Yujing Zhang, Feng Xu
Summary: In this study, the microstructure and magnetocaloric properties of La(Fe,Si)13 alloys were effectively tailored by tuning the solidification kinetics. Finite element simulations revealed differences in the temperature gradient along the solidification path of the rapid solidification process. The microstructure difference between the edge and center regions increased for samples with larger diameter, while more homogeneous microstructure was observed in samples with smaller size. The largest magnetic entropy change was obtained in thin plates, comparable to that of master bulk alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Thermodynamics
Nithya Christopher, Kritika Anand, A. K. Srivastava, Nidhi Singh
Summary: The thermal and kinetic analysis of partially crystallized Hf1.5Zr0.5Co10FeB melt-spun ribbon was studied using differential scanning calorimetry, showing a three-step exothermic crystallization process. The kinetics of crystallization revealed that the alloy's crystallization is initially governed by three-dimensional growth, shifting to one-dimensional growth later.X-ray diffraction confirmed the crystalline phases in optimized annealed samples, while scanning electron microscopy investigated the microstructural dependence of grain growth during annealing. Magnetic hysteresis loop measurements demonstrated the evolution of hard magnetic properties upon annealing at 823 K.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Physical
Yanchong Yu, Yanquan Ji, Shaohua Zhang, Shuai Wang, Yiwan Chen, Baosheng Liu, Yanghuan Zhang
Summary: In this study, Mg-Ni-Y alloy was prepared and it was found that the Ni element can improve the thermodynamic properties of the alloy. Increasing Ni content helps to enhance the hydrogen absorption and desorption kinetics of the alloy.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Huazhou Hu, Chuanming Ma, Qingjun Chen
Summary: TiCrVFe alloys exhibit fast hydrogen absorption and desorption rates with high reversible capacities. The crystal structure of the alloy transforms from BCC to FCC upon hydrogenation, leading to lattice expansion and generation of defects. The hydrogen absorption kinetics are controlled by 3D diffusion mechanisms, with an activation energy of -18.41 kJ/mol.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Pavel Diko, Viktor Kavecansky, Tomas Ryba, Lucia Frolova, Rastislav Varga, Zuzana Vargova
Summary: The study revealed that the Co(2)MnAl(-) type Heusler alloy in the form of a melt-spun ribbon shows different structural distributions, with cellular or dendritic growth formed during the solidification process. The elements in the alloy exhibit a distinctively uneven distribution at the center and boundaries of the cellular or dendritic arms.
Article
Materials Science, Multidisciplinary
Yan Feng, Chen Fang, Yan-Ling Ai, Hai-Bo Wang, Li Gao, Hong Chen, Xiao-Hai Bian
Summary: The crystal orientation of Ni50Mn25In25 and Ni50Mn34In16 melt-spun ribbons, which exhibit parent phase at room temperature, was investigated in this study. The grains were found to grow perpendicular to the ribbon's surface, showing distinct columnar crystals. X-ray diffraction and electron backscattered diffraction techniques were used to identify the orientation information. The results indicate a well-developed preferred orientation parallel to the direction, in accordance with the Eucken-Hirsch texture observed in other shape memory ribbons. This texture is predicted to be beneficial for magnetic field-induced strain compared to common polycrystals. The findings of this study provide a reference for the preparation of Ni-Mn-In melt-spun ribbons.
Article
Chemistry, Physical
Qin Peng, Yunhu Zhang, Sigurd Wenner, Bin Yang, Benjamin Milkereit, Jette Broer, Armin Springer, Christoph Schick, Olaf Kessler
Summary: This study used differential fast scanning calorimetry (DFSC) to investigate the rapid solidification behavior of micro-sized Al-Si alloy particles. The solidification sequence and different mechanisms of α-Al phase formation were proposed. This study provides a practical approach to examining the rapid solidification behavior of metal particles, allowing the distinction between surface and interface/bulk nucleation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Thermodynamics
Sushil Patel, Pradeep Reddy, Arvind Kumar
Summary: In laser spot welding, the rapid solidification process poses challenges in analyzing solidification, which generally occurs with non-equilibrium kinetics. A methodology for handling rapid solidification in laser spot welding is developed by solving transient conservation equations of mass, momentum and energy. The effect of undercooling and recalescence on melt pool dimension, temperature, solidification time and melt pool convection is investigated.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Chemistry, Multidisciplinary
Jiwei Yao, Yang Zhao, Hui Yong, Shuai Wang, Ting Han, Jifan Hu, Yanghuan Zhang
Summary: Composites of Mg90Ce5Y5 + 5.0 wt % MoS2/MoO2 were produced and the phase-composition and microstructure were analyzed. The MoS2-catalyzed alloy showed faster hydrogen absorption and desorption rates, with higher initial dehydrogenation temperature and lower dehydrogenation activation energy compared to the MoO2-catalyzed alloy. Addition of MoO2 and MoS2 had limited effect on the decomposition enthalpy and entropy values. Generally, S2- ions were more effective than O2- ions in enhancing the hydrogen storage properties of the alloy.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
Shaodong Hu, Long Hou, Kang Wang, Zhongmiao Liao, Wen Zhu, Aihua Yi, Wenfang Li, Yves Fautrelle, Xi Li
Summary: Research indicates that thermoelectric magnetic convection (TEMC) under transverse static magnetic field leads to solute enrichment on one side of the sample, affecting primary dendrite arm spacing and freckle formation. The impact intensifies with an increase in magnetic field strength.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Si-Zhe Niu, Hong-Chao Kou, Jun Wang, Jin-Shan Li
Summary: The effect of heat treatment on microstructure and tensile properties of the Al0.5CoCrFeNi high-entropy alloy was investigated, showing significant improvements in both aspects. Heat treatment altered the morphology of bcc phases and enhanced tensile properties, with ultimate tensile strength increased by approximately 60% under 850 degrees C heat treatment. Fracture analysis indicated different fracture modes under various heat-treated conditions, with a mixture of quasi-cleavage and ductile fracture observed at 850 degrees C.
Article
Materials Science, Multidisciplinary
Bin Tang, Yudong Chu, Mengqi Zhang, Caisi Meng, Jiangkun Fan, Hongchao Kou, Jinshan Li
MATERIALS CHEMISTRY AND PHYSICS
(2020)
Article
Chemistry, Physical
Wenjie Song, Huiping Dong, Guang Zhang, Jie Liu, Guang Yang, Yanhui Liu, Yuzhi Li, Jinshan Li, Jianghua Shen, Youxing Chen, Qiuming Wei
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Chemistry, Physical
Wenjie Song, Jie Liu, Huiping Dong, Guang Zhang, Jianghua Shen, Youxing Chen, Qiuming Wei
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Materials Science, Ceramics
Liyuan Li, Jinshan Li, Yixuan He, Jingshan Cao, Hongchao Kou, Jun Wang
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2020)
Article
Materials Science, Multidisciplinary
Chen Wei, Jun Wang, Yixuan He, Yujie Yan, Jianglin Gao, Jinshan Li, Eric Beaugnon
Article
Materials Science, Multidisciplinary
Letian Fan, Jijun Ma, Chengxiong Zou, Jun Gao, Haisheng Wang, Jing Sun, Quanmei Guan, Jun Wang, Bin Tang, Jinshan Li, William Yi Wang
Article
Materials Science, Multidisciplinary
Nana Chen, Jon M. Molina-Aldareguia, Hongchao Kou, Fengming Qiang, Zhihong Wu, Jinshan Li
Article
Materials Science, Multidisciplinary
Yuan Yu, XinYi Liu, Haitao Duan, Jun Yang, Zhuhui Qiao, Jian Li, Jinshan Li
Article
Materials Science, Multidisciplinary
Yonghao Yu, Hongchao Kou, Fengming Qiang, Lingling Wang, Yuqing Li, Ruifeng Zhao, Jinshan Li
Summary: This paper investigates the novel duplex microstructure in Ti-44Al-4Nb-2Cr-0.1B alloy during a specific heat treatment process, shedding light on the γ > alpha(2) transformation mechanism in equiaxed γ grains and providing valuable insights for the material's heat treatment process.
Article
Materials Science, Multidisciplinary
Ni Deng, Jun Wang, Jiaxiang Wang, Yixuan He, Ziyang Lan, Ruifeng Zhao, Eric Beaugon, Jinshan Li
Summary: The study demonstrates that using a high static magnetic field can improve the properties of AlCoCrCuFeNi high entropy alloy, especially the content of ferromagnetic FeCr-rich BCC phase. Introducing a high magnetic field not only enhances the yield stress and plastic strain, but also increases the saturation magnetization value.
Article
Materials Science, Multidisciplinary
Wenjie Song, Jie Liu, Shuai He, Jianghua Shen, Guang Yang, Yanhui Liu, Youxing Chen, Qiuming Wei
Summary: This study prepared ultra-light and high-strength Mg-Li alloys via vacuum induction melting and investigated the effects of the rare earth element yttrium (Y) on their microstructure and mechanical properties. The alloys showed a microstructure consisting of different phases, including alpha-Mg, beta-Li, AlLi, and MgLi2Al. The addition of Y resulted in the formation of sharp-edged Al2Y phases. The presence of nano-scale lath-shape MgLiZn phases and the continuous growth of MgLi2Al phases at the grain boundaries were observed. The 0.5Y alloy exhibited the highest tensile strength and a significantly higher yield strength compared to the 0Y alloy. Solid solution strengthening, precipitate strengthening, and grain refinement were identified as the primary strengthening mechanisms caused by the addition of Y into the Mg-10Li-3Al-3Zn alloy.
MATERIALS CHARACTERIZATION
(2022)
Article
Nanoscience & Nanotechnology
Yonghao Yu, Hongchao Kou, Yarong Wang, Yichao Wang, Mengyu Jia, Hongchao Li, Yuqing Li, Jun Wang, Jinshan Li
Summary: This paper investigates the control of lamellar orientation in alpha-solidified TiAl alloy using anti-gravity investment casting. The macrostructures and microstructures of iso-section plate and variable-section blade are studied in detail. The results show that both the plate and blade body consist of columnar crystals in their macrostructures, while the microstructures are composed of lamellar colonies with preferred orientation and some uncontrolled colonies. The orientation of lamellae between adjacent colonies is almost parallel in the plates, while in the blade body, the angle of lamellae is controlled within 15 degrees. The misorientation between colonies is caused by the tilted growth of alpha dendrites due to the variable-section character of the blade. Additionally, the formation of uncontrolled lamellar colonies is investigated in both plate and blade.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Yarong Wang, Hongchao Kou, Yonghao Yu, Xiaoxuan Xu, Yuqing Li, Jun Wang, Jinshan Li
Summary: The microstructure and mechanical properties of Ti-48Al-2Cr-2Nb alloy can be improved by high magnetic field treatment, resulting in increased strength and elongation. The magnetoplastic effect plays a significant role in these improvements.
Article
Chemistry, Physical
Tianyu Chen, Zhibin Lu, Guangjin Zeng, Yongmin Xie, Jie Xiao, Zhifeng Xu
Summary: The study introduces a high-performance LSGM electrolyte-supported tubular DC-SOFC stack for portable applications, which shows great potential in developing into high-performing, efficient, and environmentally friendly portable power sources for distributed applications.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Wenbin Tong, Yili Chen, Shijie Gong, Shaokun Zhu, Jie Tian, Jiaqian Qin, Wenyong Chen, Shuanghong Chen
Summary: In this study, a three-dimensional porous NiO interface layer with enhanced anode dynamics is fabricated, forming a Schottky contact with the zinc substrate, allowing rapid and uniform zinc plating both inside and below the interface layer. The resulting NiO@Zn exhibits exceptional stability and high capacity retention.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yafeng Bai, Kaidi Li, Liying Wang, Yang Gao, Xuesong Li, Xijia Yang, Wei Lu
Summary: In this study, a flexible zinc ion supercapacitor with gel electrolytes, porous alpha-MnO2@reduced graphene oxide cathode, and activated carbon/carbon cloth anode was developed. The device exhibits excellent electrochemical performance and stability, even at low temperatures, with a high cycle retention rate after 5000 cycles.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Anmol Jnawali, Matt D. R. Kok, Francesco Iacoviello, Daniel J. L. Brett, Paul R. Shearing
Summary: This article presents the results of a systematic study on the electrochemical performance and mechanical changes in two types of commercial batteries with different anode chemistry. The study reveals that the swelling of anode layers in batteries with silicon-based components causes deformations in the jelly roll structure, but the presence of a small percentage of silicon does not significantly impact the cycling performance of the cells within the relevant state-of-health range for electric vehicles (EVs). The research suggests that there is room for improving the cell capacities by increasing the silicon loading in composite anodes to meet the increasing demands on EVs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yohandys A. Zulueta, My Phuong Pham-Ho, Minh Tho Nguyen
Summary: Advanced atomistic simulations were used to study ion transport in the Na- and K-doped lithium disilicate Li2Si2O5. The results showed that Na and K doping significantly enhanced Li ion diffusion and conduction in the material.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Zongying Han, Hui Dong, Yanru Yang, Hao Yu, Zhibin Yang
Summary: An efficient phase inversion-impregnation approach is developed to fabricate BaO-decorated Ni8 mol% YSZ anode-supported tubular solid oxide fuel cells (SOFCs) with anti-coking properties. BaO nanoislands are successfully introduced inside the Ni-YSZ anode, leading to higher peak power densities and improved stability in methane fuel. Density functional theory calculations suggest that the loading of BaO nanoislands facilitates carbon elimination by capturing and dissociating H2O molecules to generate OH.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Suresh Mamidi, Dan Na, Baeksang Yoon, Henu Sharma, Anil D. Pathak, Kisor Kumar Sahu, Dae Young Lee, Cheul-Ro Lee, Inseok Seo
Summary: Li-CO2 batteries, which utilize CO2 and have a high energy density, are hindered in practical applications due to slow kinetics and safety hazards. This study introduces a stable and highly conductive ceramic-based solid electrolyte and a metal-organic framework catalyst to improve the safety and performance of Li-CO2 batteries. The optimized Li-CO2 cell shows outstanding specific capacity and cycle life, and the post-cycling analysis reveals the degradation mechanism of the electrodes. First-principles calculations based on density functional theory are also performed to understand the interactions between the catalyst and the host electrode. This research demonstrates the potential of MOF cathode catalyst for stable operation in Li-CO2 batteries.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Ganghua Xiang, Zhihuan Qiu, Huilong Fei, Zhigang Liu, Shuangfeng Yin, Yuen Wu
Summary: In this study, a CeFeOx-supported Pt single atoms and subnanometric clusters catalyst was developed, which exhibits enhanced catalytic activity and stability for the preferential oxidation of CO in H2-rich stream through synergistic effect.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Dimitrios Chatzogiannakis, Marcus Fehse, Maria Angeles Cabanero, Natalia Romano, Ashley Black, Damien Saurel, M. Rosa Palacin, Montse Casas-Cabanas
Summary: By coupling electrochemical testing to operando synchrotron based X-ray absorption and powder diffraction experiments, blended positive electrodes consisting of LiMn2O4 spinel (LMO) and layered LiNi0.5Mn0.3Co0.2O2 (NMC) were studied to understand their redox mechanism. It was found that blending NMC with LMO can enhance energy density at high rates, with the blend containing 25% LMO showing the best performance. Testing with a special electrochemical setup revealed that the effective current load on each blend component can vary significantly from the nominal rate and also changes with SoC. Operando studies allowed monitoring of the oxidation state evolution and changes in crystal structure, in line with the expected behavior of individual components considering their electrochemical current loads.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Chiara Cementon, Daniel Dewar, Thrinathreddy Ramireddy, Michael Brennan, Alexey M. Glushenkov
Summary: This Perspective discusses the specific power and power density of lithium-ion capacitors, highlighting the fact that their power characteristics are often underestimated. Through analysis, it is found that lithium-ion capacitors can usually achieve power densities superior to electrochemical supercapacitors, making them excellent alternatives to supercapacitors.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Weihao Wang, Hao Yu, Li Ma, Youquan Zhang, Yuejiao Chen, Libao Chen, Guichao Kuang, Liangjun Zhou, Weifeng Wei
Summary: This study achieved an improved electrolyte with excellent low-temperature and high-voltage performance by regulating the Li+ solvation structure and highly concentrating it. The electrolyte exhibited outstanding oxidation potential and high ionic conductivity under low temperature and high voltage conditions, providing a promising approach for the practical application of high-voltage LIBs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Martin Bures, Dan Gotz, Jiri Charvat, Milos Svoboda, Jaromir Pocedic, Juraj Kosek, Alexandr Zubov, Petr Mazur
Summary: Vanadium redox flow battery is a promising energy storage solution with long-term durability, non-flammability, and high overall efficiency. Researchers have developed a mathematical model to simulate the charge-discharge cycling of the battery, and found that hydraulic connection of electrolyte tanks is the most effective strategy to reduce capacity losses, achieving a 69% reduction.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
M. Rodriguez-Gomez, J. Campo, A. Orera, F. de La Fuente, J. Valenciano, H. Fricke, D. S. Hussey, Y. Chen, D. Yu, K. An, A. Larrea
Summary: In this study, we analysed the operando performance of industrial lead cells using neutron diffraction experiments. The experiments revealed the evolution of different phases in the positive electrode, showed significant inhomogeneity of phase distribution inside the electrode, and estimated the energy efficiency of the cells.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Jiawei Liu, Chenpeng Wang, Yue Yao, Hao Ye, Yinglong Liu, Yingli Liu, Xiaoru Xu, Zhicong Chen, Huazheng Yang, Gang Wu, Libin Lei, Chao Wang, Bo Liang
Summary: The study focuses on utilizing double conductive Ni-pads as anode collectors in micro-tubular solid oxide fuel cells. The simulation results show excellent performance and stability of DCNPs, and also highlight the potential applications in various fields.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yang Wang, Kangjie Zhou, Lang Cui, Jiabing Mei, Shengnan Li, Le Li, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: This study presents a polyimide sandwiched separator (s-PIF) for improving the cycling stability of Li-metal batteries. The s-PIF separator exhibits superior mechanical property, electrolyte adsorption/retention and ion conductivity, and enables dendrite-free Li plating/stripping process.
JOURNAL OF POWER SOURCES
(2024)