Article
Chemistry, Physical
Mengru Hu, Xin Sun, Bo Li, Peng Li, Meichai Xiong, Jun Tan, Zhangze Ye, Juergen Eckert, Chu Liang, Hongge Pan
Summary: This study presents a low-cost, time-saving, and low-carbon method for synthesizing Mg(NH2)(2) through mechanochemical reaction of metallic Mg with ammonia. The synthesized Mg(NH2)(2) shows comparable hydrogen storage performance as the conventional method, providing a potential large-scale synthesis route for hydrogen storage.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Luis Contreras, Margarita Mayacela, Alberto Bustillos, Leonardo Renteria, David Book
Summary: The formation and hydrogen sorption properties of the NaMgH3 perovskite/type hydride were studied, and it was found that the lattice parameters and cell volume of the main NaMgH3 phase increased with milling time. The NaMgH3 hydride milled for 2 hours released the highest amount of hydrogen, which could be reversibly hydrogenated at about 200 degrees Celsius.
Article
Chemistry, Physical
K. Sarath Babu, E. Anil Kumar
Summary: In this study, a compressor operated sorption thermochemical energy storage system is proposed and examined for high temperature thermal energy storage. Magnesium-based metal hydrides are used as energy storage materials, resulting in significant heat upgradation and high performance coefficients.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Magdalena Rzeszotarska, Julita Dworecka-Wojcik, Adam Debski, Tomasz Czujko, Marek Polanski
Summary: The synthesis of a complex hydride Mg-2(Fe, Cr, Ni)H-x via reactive ball milling process of AISI 316 L stainless steel and magnesium hydride was presented. The results show that the reaction between magnesium hydride and 316 L steel proceeded faster than with pure iron, resulting in a material with a cubic K2PtCl6 structure. Additionally, the obtained samples had a hydrogen content of around 4 wt% and the synthesized sample was able to absorb 1% of hydrogen at -50 degrees c through the formation of magnesium hydride.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
W. J. Botta, G. Zepon, T. T. Ishikawa, D. R. Leiva
Summary: This article reviews the progress in studying the reaction of hydrogen with metallic Mg to form MgH2, as well as how different metallurgical processing routes influence the microstructure of the material.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yang Meng, Shunlong Ju, Wei Chen, Xiaowei Chen, Guanglin Xia, Dalin Sun, Xuebin Yu
Summary: By fabricating V4Nb18O55 microspheres, the H-2 desorption and absorption properties of MgH2 can be improved and the uniform formation of Nb/V interfaces can be achieved, resulting in the reduction of dehydrogenation temperature of MgH2 and the enhancement of hydrogenation reaction rate.
Article
Chemistry, Physical
Matthew Witman, Gustav Ek, Sanliang Ling, Jeffery Chames, Sapan Agarwal, Justin Wong, Mark D. Allendorf, Martin Sahlberg, Vitalie Stavila
Summary: The research on solid-state hydrogen storage materials and the discovery of novel hydriding materials are now accompanied by the introduction of data-driven machine learning models, especially for high entropy alloy hydrides.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Selim Kazaz, Emanuel Billeter, Filippo Longo, Andreas Borgschulte, Zbigniew Lodziana
Summary: The provision of atomic hydrogen by hydrogen dissociation catalysts only moderately accelerates the hydrogenation rate of magnesium. This fact is explained through a combined approach using surface science techniques and Density Functional Theory calculations. The calculations demonstrate the electronic structure changes during the transformation of magnesium into magnesium hydride, which make fractional hydrogen coverage on the surface and substoichiometric hydrogen content in the bulk energetically unfavorable. Experimental measurements using Reflecting Electron Energy Loss Spectroscopy confirm that hydrogenation occurs via the growth of magnesium hydride without the presence of chemisorbed hydrogen on the metallic magnesium surface.
Article
Chemistry, Physical
Agata Baran, Michal Kniola, Tomasz Rogala, Marek Polanski
Summary: A new route of materials synthesis, high-temperature, high-pressure reactive planetary ball milling (HTPRM), is introduced in this study. It allows for the controlled mechanosynthesis of materials at temperatures up to 450 degrees C and pressures up to 100 bar of hydrogen. The successful synthesis of magnesium hydride is presented as an example of the application, demonstrating the great potential of this technique for the mechanochemical synthesis of materials.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Ahammed Jubair, Md Akhlakur Rahman, Md Maksudur Rahman Khan, Md Wasikur Rahman
Summary: The hydrogen sorption characteristics of magnesium hydride (MgH2) were enhanced by ball milling and the addition of metal oxides, particularly CuO. The presence of CuO led to a more significant effect on the desorption kinetics compared to Al2O3. The addition of metal oxides reduced the activation energy and energy waste, improving the hydrogen storage capacity of MgH2.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2023)
Article
Chemistry, Physical
Robert T. Bell, Nicholas A. Strange, Noemi Leick, Vitalie Stavila, Mark E. Bowden, Tom S. Autrey, Thomas Gennett
Summary: The use of an organic borohydride salt additive, tetramethylammonium borohydride (TMAB), has been shown to enhance the chemical stability and thermal cyclability of Mg(BH4)(2) melt. This finding is significant for applications in hydrogen storage and magnesium battery technologies.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Energy & Fuels
Ihor Zavaliy, Vasyl Berezovets, Roman Denys, Oleksandr Kononiuk, Volodymyr Yartys
Summary: The catalytic effect of eta-Zr3V3O0.6 mixed suboxide and graphite additives on MgH2 properties in hydrogen storage and generation processes was investigated. Hydride composites were obtained by reactive ball milling and characterized using XRD and SEM. The addition of Zr3V3O0.6 and graphite significantly enhanced hydrogen absorption and desorption rates, as well as lowered the activation energy and desorption temperature. The synthesized composite showed improved kinetics and enhanced hydrogenation capacity, making it a promising material for hydrogen storage. The catalytic composites also exhibited efficient hydrogen generation in hydrolysis reaction. Overall, the research received a rating of 8 out of 10.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Manjin Kim, Qinfen Gu, Tanveer Hussain, Yahia Ali, Trevor B. Abbott, Kazuhiro Nogita
Summary: Adding Na to cast Mg-La alloys significantly improves hydrogen absorption kinetics during the first activation cycle. The role of Na in Mg-La alloys has been discussed based on microstructural observations, crystallography, and first principles calculations.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Seemita Banrejee, Asheesh Kumar, Priyanka Ruz, Vasanthakumaran Sudarsan
Summary: Nanocrystalline magnesium prepared by wet milling method without heavy metal catalyst shows improved hydrogen storage properties with higher capacity, following a specific activation energy model for hydrogenation and dehydrogenation kinetics.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Eli Grigorova, Pavel Markov, Boyko Tsyntsarski, Peter Tzvetkov, Ivanka Stoycheva
Summary: This study investigates the hydrogen sorption performance of materials based on 80 wt.% MgH2 with the addition of 15 wt.% Ni or V and 5 wt.% activated carbons synthesized from polyolefin wax, a waste product from polyethylene production (POW), walnut shells (CAN), and peach stones (CPS). The composition and performance of the samples are analyzed through milling, hydrogenation, X-ray diffraction, and TEM.
Article
Chemistry, Physical
S. A. Pighin, G. Urretavizcaya, F. J. Castro
JOURNAL OF ALLOYS AND COMPOUNDS
(2017)
Article
Chemistry, Physical
Santiago A. Pighin, Bruno Coco, Horacio Troiani, Facundo J. Castro, Guillermina Urretavizcaya
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Chemistry, Inorganic & Nuclear
Facundo J. Castro, Gaston A. Primo, Guillermina Urretavizcaya
JOURNAL OF SOLID STATE CHEMISTRY
(2018)
Article
Chemistry, Physical
Juan J. Cortez, Facundo J. Castro, Horacio E. Troiani, Santiago A. Pighin, Guillermina Urretavizcaya
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Chemistry, Multidisciplinary
Florencia Malamud, Facundo Castro, Lina Maria Guerrero, Paulo La Roca, Marcos Sade, Alberto Baruj
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2020)
Article
Chemistry, Physical
S. Al Bacha, S. A. Pighin, G. Urretavizcaya, M. Zakhour, M. Nakhl, F. J. Castro, J-L Bobet
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Chemistry, Physical
S. A. Pighin, G. Urretavizcaya, J-L Bobet, F. J. Castro
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Chemistry, Physical
Xavier A. Ojeda, Facundo J. Castro, Santiago A. Pighin, Horacio E. Troiani, M. Sergio Moreno, Guillermina Urretavizcaya
Summary: The study identified the optimal Nb(V) ethoxide content of 0.25 mol% for efficiently catalyzing the H-2 sorption kinetics in the Mg/MgH2 system. The material showed remarkable kinetic behavior with excellent reversibility, absorbing and desorbing 5.3 wt% of hydrogen within 3 minutes. The improvement in hydrogen desorption and absorption properties was attributed to the enhancement of kinetic processes on the material's surface due to the excellent spreading of the liquid additive at nanometric level.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
S. Al Bacha, S. A. Pighin, G. Urretavizcaya, M. Zakhour, F. J. Castro, M. Nakhl, J. -L. Bobet
JOURNAL OF POWER SOURCES
(2020)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
