Article
Chemistry, Physical
Soufiane Bahou, Hicham Labrim, Marwan Lakhal, Mohamed Bhihi, Bouchaib Hartiti, Hamid Ez-Zahraouy
Summary: By studying the effect of magnesium vacancies and hydrogen doping on magnesium hydride, it is found that they contribute to enhancing the hydrogen storage properties of the hydride by reducing desorption temperature and stability. It is noteworthy that controlling the concentrations of magnesium vacancies and hydrogen dopant atoms can regulate the desorption temperature, optimizing the practical application of the hydride in fuel cell vehicles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Ying Liu, Zhuonan Huang, Xiong Gao, Yuqi Wang, Feng Wang, Shuaishuai Zheng, Sinan Guan, Hongli Yan, Xin Yang, Weihua Jia
Summary: LaNi4.5Fe0.5 doped MgH2 exhibits the best H2 absorption/desorption performance compared to other samples, with rapid hydrogen introduction capabilities at a mild temperature and pressure. The activation energy barriers for hydrogenation and dehydrogenation are significantly reduced, suggesting successful doping and improved catalytic properties of the La-based alloy inside MgH2.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Multidisciplinary
Chengshang Zhou, Ke Li, Tongwen Huang, Pei Sun, Li Wang, Yanshan Lu, Zhigang Zak Fang
Summary: This study demonstrates the in situ formation of nanocrystalline MgH2 by hydrogenation at room temperature and investigates the effects of hydrogenation variables on the nanostructure. The results show that hydrogenated samples under lower pressure have larger MgH2 nanocrystallites and improved dehydrogenation kinetics. The study identifies hydrogenation pressure, temperature, and defect density as critical parameters affecting the nucleation rate of MgH2.
MATERIALS & DESIGN
(2022)
Article
Energy & Fuels
Haoyuan Li, Qiang Fu, Hongyun Qin, Xia Chen, Qicheng Zhang, Hui Zhang, Shoudong Wang, Zixu Dong, Ming Wang
Summary: In this study, the controllable and continuous MgH2 hydrolysis was achieved by using an optimized porous filter element, which provides valuable reference for continuous MgH2 hydrolysis.
Article
Chemistry, Physical
Jonathan T. Lyon
Summary: Transition metal doped magnesium hydride solids are a promising candidate for hydrogen storage materials. Through theoretical studies on MgScHn clusters using density functional theory and Moller-Plesset perturbation theory, it was found that hydrogen binds successively to the MgSc diatomic metal center up to MgScH13 before dissociating from larger clusters. The analysis of frontier orbitals and natural bonding supports the logical dissociation pathway observed in these clusters.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
G. N. Churilov, N. S. Nikolaev, V. Elesina, G. A. Glushenko, V. G. Isakova, Ye Tomashevich
Summary: In this study, the change in properties of powders with a core-shell structure (magnesium-carbon and magnesium-carbon/palladium) during the process of hydrogenation/dehydrogenation was investigated. It was found that the decrease in hydrogen sorption capacity was mainly due to the formation of MgO and Mg(OH)2 phases, which hindered the diffusion of hydrogen. The carbon shell provided more complete hydrogenation, while the additional palladium shell increased resistance and lowered the temperature of hydrogenation/dehydrogenation processes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Yongyang Zhu, Shaoyang Shen, Liuzhang Ouyang, Jiangwen Liu, Hui Wang, Zhenguo Huang, Min Zhu
Summary: This study reports an economical method to synthesize Mg(BH4)(2) by converting B-O bonds in widely available borates or boric acid to B-H. This method avoids expensive boron sources and high pressure and temperature conditions, significantly reducing costs, and could be an alternative to the current synthesis processes of Mg(BH4)(2).
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Dezhu Tan, Cong Peng, Qingan Zhang
Summary: In this study, a Mg-Ni-TiS2 composite was synthesized through a solution-based method, which showed improved hydrogen desorption kinetics due to the synergistic catalytic effect of Mg2NiH4, TiH2, and TiS2. The composite also exhibited high cycle stability. This work provides a feasible approach for the development of Mg-based hydrogen storage materials.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Cong Peng, Yongtao Li, Qingan Zhang
Summary: This paper proposes a new approach to improve the sorption kinetics of magnesium hydride by catalyzing it with highly dispersed nickel nanoparticles. The experiment demonstrates that the in-situ formation of highly dispersed Ni nanoparticles in the MgH2 matrix significantly enhances the hydrogen desorption kinetics and retention rate of MgH2.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
N. A. Sazelee, N. A. Ali, M. S. Yahya, M. F. Md Din, M. Ismail
Summary: In this study, BaMnO3 was used as an additive to improve the drawbacks of MgH2, resulting in a lower desorption temperature, faster absorption kinetics, and lower activation energy. The formation of certain compounds enhanced the performance of MgH2.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Sunku Prasad Jenne, Sayantan Jana, Muthukumar Palanisamy
Summary: In this study, experimental investigation was conducted to study the absorption and desorption characteristics of a metal hydride reactor, showing that supply pressure has a greater impact on the amount of hydrogen absorbed than absorption temperature. Sensible heating was used to accelerate desorption process.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Review
Materials Science, Multidisciplinary
Hang Yang, Zhao Ding, Yu-Ting Li, Shao-Yuan Li, Ping-Keng Wu, Quan-Hui Hou, Yang Zheng, Biao Gao, Kai-Fu Huo, Wen-Jia Du, Leon L. Shaw
Summary: Developing safer and more efficient hydrogen storage technology is crucial for the realization of the hydrogen economy. MgH2 has been extensively studied as a promising solid-state hydrogen storage material due to its lightweight, high storage density, and abundant reserves. However, practical applications have been hindered by issues such as stable thermodynamics, sluggish kinetics, and rapid capacity decay.
Article
Chemistry, Physical
Chen Jin, Haoyuan Zheng, Li Wang, Haizhen Liu, Xinhua Wang, Mi Yan
Summary: Adding rare earth hydride CeH2.51 significantly improves the hydrogen storage performance of Mg(NH2)2-2LiH, enhancing the hydrogen absorption/desorption kinetics and cycle performance. The sample doped with 7.5 wt% CeH2.51 shows the best comprehensive performance, with reduced activation energy and stable hydrogen storage capacity after cycles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Haizhen Liu, Xingqing Duan, Zhiye Wu, Hui Luo, Xinhua Wang, Cunke Huang, Zhiqiang Lan, Wenzheng Zhou, Jin Guo, Mohammad Ismail
Summary: In this work, a bimetallic open layered Ti2VC2 MXene was successfully synthesized and showed good enhancing impact on the hydrogen storage properties of MgH2. MgH2-Ti2VC2 starts dehydrogenation at a lower temperature and both MgH2-Ti2VC2 and MgH2-Ti2VAlC2 can start rehydrogenation at room temperature. The reversible capacity of MgH2-Ti2VC2 only slightly decreases after 100 cycles.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Metallurgy & Metallurgical Engineering
Yaokun Fu, Lu Zhang, Yuan Li, Sanyang Guo, Han Yu, Wenfeng Wang, Kailiang Ren, Wei Zhang, Shumin Han
Summary: Hydrogen storage is a crucial aspect of the hydrogen economy, and solid-state hydrogen storage is the most promising approach. In this study, a ternary transition metal sulfide FeNi2S4 with a hollow balloon structure was designed as a catalyst for MgH2 to enhance its dehydrogenation/hydrogenation performance by constructing a MgH2/Mg2NiH4-MgS/Fe system.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Chemistry, Physical
M. Abdellaoui, M. Lakhal, H. Benzidi, O. Mounkachi, A. Benyoussef, A. El Kenz, M. Loulidi
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Chemistry, Physical
M. Garara, H. Benzidi, M. Lakhal, M. Louilidi, H. Ez-Zahraouy, A. El Kenz, M. Hamedoun, A. Benyoussef, A. Kara, O. Mounkachi
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Chemistry, Physical
Majid E. L. Kassaoui, Marwan Lakhal, Mustapha Abdellaoui, Abdelilah Benyoussef, Abdallah El Kenz, Mohammed Loulidi
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Materials Science, Multidisciplinary
K. Aghrich, M. Abdellaoui, N. Mamouni, A. Bellaouchou, M. Fekhaoui, E. K. Hlil, O. Mounkachi
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2020)
Article
Chemistry, Physical
Soufiane Bahou, Hicham Labrim, Marwan Lakhal, Mohamed Bhihi, Bouchaib Hartiti, Hamid Ez-Zahraouy
Summary: By studying the effect of magnesium vacancies and hydrogen doping on magnesium hydride, it is found that they contribute to enhancing the hydrogen storage properties of the hydride by reducing desorption temperature and stability. It is noteworthy that controlling the concentrations of magnesium vacancies and hydrogen dopant atoms can regulate the desorption temperature, optimizing the practical application of the hydride in fuel cell vehicles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Majid El Kassaoui, Marwan Lakhal, Abdelilah Benyoussef, Abdallah El Kenz, Mohammed Loulidi
Summary: Using different elements and substitution methods to tune the hydrogen storage properties of MOF-5 can achieve higher storage capacity and lower desorption temperature.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Majid El Kassaoui, Mohamed Houmad, Marwan Lakhal, Abdelilah Benyoussef, Abdallah El Kenz, Mohammed Loulidi
Summary: The study found that the adsorption energy of hydrogen molecules on tetragonal silicon carbide monolayer is stronger than that on graphene, and the stability and adsorption capacity of hydrogen can be improved by decorating with alkali and alkaline earth metals atoms.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Majid El Kassaoui, Marwan Lakhal, Abdelilah Benyoussef, Abdallah El Kenz, Mohammed Loulidi
Summary: MOFs, especially Zn-MOF-5, are considered promising materials due to their high surface area, porosity, pore size tunability, rigidity, flexibility, and thermal stability. However, issues such as low enthalpy change and desorption temperature hinder their use. This study presents a substitution approach to improve the thermodynamic properties of MOF-5, with results showing that Cd and Mg connectors can enhance stability and hydrogen adsorption capacity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Energy & Fuels
Omar Mounkachi, Asmae Akrouchi, Ghassane Tiouitchi, Marwan Lakhal, Elmehdi Salmani, Abdelilah Benyoussef, Abdelkader Kara, Abdellah El Kenz, Hamid Ez-Zahraouy, Amine El Moutaouakil
Summary: The study presents an important advancement towards controlling the enthalpy and desorption temperatures of nano-structured MgH2 thin films via stress/strain and size effects, leading to a significant enhancement in the hydrogen storage properties of MgH2.
Article
Energy & Fuels
Khaoula Aghrich, Sara Mtougui, Faycal Goumrhar, Mustapha Abdellaoui, Nabila Mamouni, Mohammed Fekhaoui, Amine El Moutaouakil, Omar Mounkachi
Summary: MnFe2O4 ferrite nanoparticle was synthesized via sol-gel method and its structural, morphology, and magnetic characteristics were investigated. The experimental and theoretical results showed that MnFe2O4 is a soft ferromagnetic material.
Article
Physics, Condensed Matter
Adil Marjaoui, Mohamed Ait Tamerd, Mustapha Abdellaoui, Mohamed Zanouni
Summary: In this study, the effect of biaxial strain on the structural, electronic, and optical properties of the 1T and 1H phases of Janus CaFBr monolayer was investigated using density functional theory. It was found that both phases are direct semiconductors with bandgaps of 3.90 eV and 3.55 eV for 1T and 1H phases, respectively. The thermodynamic stability was examined through cohesive energy and phonon dispersion. The bandgap decreased linearly and showed a nearly parabolic behavior under compressive and tensile strain, respectively, with a shift from direct to indirect bandgap at -10% compressive strain. The calculated dielectric function and optical properties such as reflectivity, refractive index, extinction, and absorption coefficients were enhanced under biaxial strain, particularly in the visible and UV regions for 1H and 1T phases, respectively, in accordance with the dielectric constant. These results suggest that the Janus CaFBr monolayer could be a potential candidate for optoelectronic applications in visible/UV detection and absorption.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2023)
Article
Chemistry, Physical
Majid El Kassaoui, Marwan Lakhal, Abdelilah Benyoussef, Abdallah El Kenz, Mohammed Loulidi, Omar Mounkachi
Summary: This study focuses on advanced design and computational analysis of hydrogen storage materials, proposing a new hydrogen storage material t-B4N4 with high hydrogen storage capacity and excellent performance, with faster molecular diffusion kinetics.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
M. Garara, H. Benzidi, M. Abdellaoui, M. Lakhal, A. El Kenz, A. Benyoussef, O. Mounkachi, M. Loulidi
MATERIALS CHEMISTRY AND PHYSICS
(2020)
Article
Chemistry, Physical
Hind Benzidi, Marwan Lakhal, Mourad Garara, Mustapha Abdellaoui, Abdelilah Benyoussef, Abdallah El Kenz, Omar Mounkachi
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2019)
