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
Luis F. Contreras Vasquez, Yinzhe Liu, David Book
Summary: The synthesis, thermodynamic destabilisation, and hydrogen sorption properties of the M0.2Ca0.8MgH4 hydride system (where M = Na or Li) were investigated in this study. Substitution of Li and Na into Ca-Mg-H ternary hydride caused diffraction peaks to shift to higher angles, and different endothermic reactions were observed.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Mateusz Balcerzak, Tomasz Runka, Zbigniew Sniadecki
Summary: BCC alloys with carbon catalysts show improved hydrogenation kinetics, lower desorption temperature, and enhanced hydrogen absorption rate, making them promising materials for hydrogen storage applications.
Article
Chemistry, Physical
N. Y. Yusnizam, N. A. Ali, N. A. Sazelee, M. M. Nasef, A. A. Jalil, M. Ismail
Summary: This study investigated the effect of barium cobalt fluoride (BaCoF4) on the de-/rehydrogenation properties of magnesium hydride (MgH2) for the first time. The addition of 10 wt% BaCoF4 significantly enhanced the de-/rehydrogenation kinetics and hydrogen absorption capacity of MgH2. BaCoF4 lowered the desorption temperature, improved the sorption kinetics, and reduced the activation energy for hydrogen desorption of MgH2 by forming CoF3 and Ba or Ba-containing species.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Zhijie Cao, Michael Felderhoff
Summary: Ytterbium tetrahydroaluminate Yb(AlH4)3 was successfully synthesized via a mechanochemical procedure under hydrogen atmosphere, with its thermal decomposition proceeding through four stages. The first dehydrogenation step exhibited a relatively low apparent activation energy, while rehydrogenation tests showed unsuccessful rehydrogenations of the first decomposition step.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Xin Wei, Chen Li, Yan Qi, Zeming Yuan, Qilu Ge, Yanghuan Zhang, Jun Li
Summary: In this study, Fe@C catalyst prepared by chemical blow molding carbonization was combined with mechanical milling to improve the hydrogen storage properties of Mg91Al5Y4 ternary alloy. The Fe@C catalyst has effectively catalytic impact on hydrogen storage kinetics, reducing the activation energy and initial dehydrogenation temperature. However, the influence of Fe@C content on thermodynamics is not very obvious.
MATERIALS CHARACTERIZATION
(2022)
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
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
Chemistry, Physical
Xusheng Liu, Shaopeng Wu, Xiaolan Cai, Lei Zhou
Summary: This paper describes the efficient preparation of an Mg2Ni alloy for hydrogen storage via high-energy ball milling mechanical alloying. The alloy's amorphisation degree increases with ball-milling time. After 4 hours of ball milling, partially amorphous alloys show the best hydrogen storage performance. Partial substitution of Ni with Cr and Mn improves the thermodynamics, kinetics, and cycling performance of the alloy. Mg2Ni0.8Mn0.2 exhibits the best cycling and hydrogen absorption/desorption kinetics.
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
Engineering, Electrical & Electronic
Ajaijawahar Kaliyaperumal, Lathapriya Vellingiri, Gokuladeepan Periyasamy, Karthigeyan Annamalai
Summary: In this study, flower-like NiO was synthesized through a simple hydrothermal method, and LiBH4@NiO was prepared using a wet ultrasonication method. Characterization techniques confirmed that LiBH4@NiO released approximately 2.13 wt% hydrogen between 50°C and 250°C, showing improved dehydrogenation compared to LiBH4 alone releasing 1.6 wt% hydrogen under the same conditions.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
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
Xiyuan Sun, Pengfei Yin, Yi Zhang, Chuanyu Zhang, Xing Feng, Gang Jiang
Summary: In this study, density functional theory (DFT) calculations were used to evaluate the hydrogen storage performance of the high stable La3B18 cluster. The results showed that each La atom could bind up to six H2 molecules, resulting in a gravimetric density of 5.6%. The adsorption energy calculated using the wB97XD functional fell within the desirable binding energy range (-0.126 to -0.179 eV). Various electron density topological analyses revealed the interaction natures in the studied complexes. Ab initio molecular dynamics (AIMD) results indicated efficient release of the H2 molecules. The La3B18 cluster was predicted to be a promising hydrogen storage medium.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
V. V. Berezovets, R. Denys, I. Yu Zavaliy, Yu Kosarchyn
Summary: MgH2-based nanocomposites were synthesized using reactive ball milling and various catalytic additives. The additives improved the hydrogen absorption-desorption kinetics and stability of the composites. Nano-Ti showed the most stable hydrogen absorption-desorption characteristics compared to TiO2 and Ti4Fe2Ox additives.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Lucas Faccioni Chanchetti, Bruno Hessel Silva, Jorge Montero, Claudia Zlotea, Yannick Champion, Walter Jose Botta, Guilherme Zepon
Summary: The structure and hydrogen storage properties of three Ti31V26Nb26Zr12M5 multicomponent alloys with M = Fe, Co, and Ni were investigated. The alloys synthesized by arc melting were characterized using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The as-cast ingots showed multi-phase dendritic structures mainly composed of BCC phases and small amounts of C14 Laves phases. Upon hydrogenation, each alloy absorbed around 1.9 H/M at room temperature. XRD analysis of fully hydrogenated samples revealed the formation of multi-phase structures consisting of FCC and C14 hydrides. Thermo Desorption Spectroscopy (TDS) indicated that the hydrogenated alloys exhibited multi-step desorption processes with wide temperature ranges and low onset temperatures. XRD analysis of partially hydrogenated samples suggested the presence of intermediate BCC hydrides. XRD analysis of desorbed samples showed reversible reactions of absorption/desorption: BCC + C14 alloy 4 intermediate BCC hydride + C14 hydride 4 FCC + C14 hydrides. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Christos Paterakis, Sheng Guo, Michael Heere, Yinzhe Liu, Luis F. Contreras, Magnus H. Sorby, Bjorn C. Hauback, Daniel Reed, David Book
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2017)
Article
Chemistry, Physical
Yinzhe Liu, Daniel Reed, Christos Paterakis, Luis Contreras Vasquez, Marcell Baricco, David Book
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2017)
Article
Chemistry, Physical
Yinzhe Liu, Michael Heere, Luis Contreras Vasquez, Christos Paterakis, Magnus H. Sorby, Bjorn C. Hauback, David Book
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Chemistry, Physical
Luis F. Contreras Vasquez, Yinzhe Liu, David Book
Summary: The synthesis, thermodynamic destabilisation, and hydrogen sorption properties of the M0.2Ca0.8MgH4 hydride system (where M = Na or Li) were investigated in this study. Substitution of Li and Na into Ca-Mg-H ternary hydride caused diffraction peaks to shift to higher angles, and different endothermic reactions were observed.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
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
Margarita Mayacela, Leonardo Renteria, Luis Contreras, Santiago Medina
Summary: The memristor, as the fourth fundamental element in electronic circuits, possesses unique memory and resistance properties. While there aren't any electronic solutions based on the memristor, there has been a significant increase in interest for application development. Currently, only numerical Matlab or Spice models and memristor emulators are available for simulating and designing memristor systems.
Article
Construction & Building Technology
Alex Lopez, Margarita Mayacela, Diego Cherrez, Emilio Aldas, Luis Felipe Contreras
Summary: One of the reasons for premature deterioration of wearing course in Ecuador's road network is the poor quality of materials in the flexible pavement structure. This research aimed to identify the highest quality stone material based on technical and economic characteristics. Tests were conducted on samples from three mines to determine their suitability for sustainable pavement structures.
Article
Construction & Building Technology
Wladimir Ramirez, Margarita Mayacela, Luis Contreras, Nestor Iza, Evelin Quishpe, Leonardo Renteria
Summary: Performance-based seismic design aims to protect the lives of occupants and minimize earthquake damages. Existing methods of estimating damage and economic losses are often subjective and yield varied results. Recent advances in technology, such as the PEER methodology, offer new approaches, but information on their application is scarce. This study used the PEER methodology to assess the economic seismic performance of a steel building at different levels of seismic intensity. The findings suggest that buildings designed to traditional standards may require demolition after an earthquake, as repair costs exceed 40% of replacement costs.
