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
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
Multidisciplinary Sciences
Chaker Briki, Sihem Belkhiria, Maha Almoneef, Mohamed Mbarek, Jemni Abdelmajid
Summary: In this study, the absorption and desorption kinetics of hydrogen and the isotherm of the LaNi4Mn0.5Co0.5 alloy were measured at different temperatures. The morphological states of the sample were examined using characterization techniques. The thermodynamic functions for hydrogen absorption and desorption were calculated, and it was found that the substitution of nickel by manganese and cobalt affected the amount of hydrogen absorbed or desorbed, while increasing the plateau pressure.
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.
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.
Review
Materials Science, Multidisciplinary
Huai-Jun Lin, Yan-Shan Lu, Liu-Ting Zhang, Hai-Zhen Liu, Kaveh Edalati, Adam Revesz
Summary: In this review, recent advances in the study of metastable alloys for hydrogen storage applications are comprehensively reviewed. The synthesis methods and hydrogen storage properties of metastable alloys are summarized and discussed, highlighting their unique kinetics and thermodynamics properties. For example, Mg-based amorphous and nanoglass alloys exhibit superior hydrogenation kinetics and higher hydrogen storage capacity, while the immiscible Mg-Mn and Mg-Zr alloys show destabilized thermodynamics properties.
Review
Materials Science, Multidisciplinary
Lingjie Kong, Bo Cheng, Di Wan, Yunfei Xue
Summary: Recently, high entropy alloys (HEAs) with body-centred cubic (BCC) single phase structures have been widely studied for hydrogen storage due to their unique structural characteristics and excellent performance. In this review, the definition and criteria of HEAs are discussed, and the current research status of BCC-structured HEAs for hydrogen storage is summarized from the perspectives of composition designs, synthesis processes, and hydrogen storage properties. Furthermore, the possible application scenarios and future research directions are analyzed.
FRONTIERS IN MATERIALS
(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
Meng-Tian Li, Ya-Ting Li, Lu Sun, Zhi-Bin Xu, Yun Zhao, Zi-Hui Meng, Qin-Pei Wu
Summary: This study demonstrates the excellent heat storage performance of magnesium hydroxide doped with cerium nitrate and lithium hydroxide, reducing dehydration temperatures, increasing dehydration and heat storage rates, and decreasing activation energy and pre-exponential factor. The research also shows the promising reversibility of the dehydration-hydration cycle for heat storage using these composites.
Review
Nanoscience & Nanotechnology
Li Ren, Yinghui Li, Ning Zhang, Zi Li, Xi Lin, Wen Zhu, Chong Lu, Wenjiang Ding, Jianxin Zou
Summary: With the urgent need to find green, low-cost, and high-efficiency energy resources due to the depletion of fossil fuels and global warming, hydrogen has been considered as a potential alternative. However, effective and safe hydrogen storage techniques are now becoming a bottleneck for the hydrogen economy. Magnesium-based hydrogen storage materials have garnered interest due to their high storage capacity, low cost, and excellent reversibility. Nano-structuring has proven to be an effective strategy to enhance the thermodynamic and kinetic properties of these materials.
NANO-MICRO LETTERS
(2023)
Article
Green & Sustainable Science & Technology
Yongfeng Liu, Wenxuan Zhang, Xin Zhang, Limei Yang, Zhenguo Huang, Fang Fang, Wenping Sun, Mingxia Gao, Hongge Pan
Summary: Hydrogen storage remains a huge challenge for the development of a sustainable energy system, despite its importance. Light metal hydrides have high hydrogen densities but suffer from slow kinetics and poor reversibility due to strong bonds between metal atoms and hydrogen. Nanoscale particles offer a promising solution to tailor the properties of light metal hydrides and improve their performance. This review summarizes the preparation methods and hydrogen storage performance of nanostructured light metal hydrides, discusses the challenges, and explores future research prospects, highlighting the combination of nanostructuring and nanocatalysis for practical hydrogen carriers.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Engineering, Environmental
Wenchao Cao, Xin Ding, Ruirun Chen, Jiaxin Zhang, Yong Zhang, Hongxian Shen, Hengzhi Fu
Summary: In this study, Mg-Ni alloy fibers with a high Mg content and well-distributed Mg2Ni catalytic phase were successfully prepared using the melt extraction method. A unique metallic glass fiber was formed, and uniformly dispersed Mg2Ni nanoparticles were in-situ formed after pre-annealing. The hydrogen absorption and desorption kinetics of the Mg-Ni fibers were investigated, and the dehydrogenation activation energy and enthalpy changes were accurately characterized using models.
CHEMICAL ENGINEERING JOURNAL
(2023)
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
Hui Yong, Xin Wei, Kewei Zhang, Shuai Wang, Dongliang Zhao, Jifan Hu, Yanghuan Zhang
Summary: The Mg90Y1.5Ce1.5Ni7 sample was successfully prepared by vacuum induction melting and mechanical milling, with a reversible hydrogen storage capacity of about 5.6 wt% released during hydrogenation and dehydrogenation processes. This study offers a scientific approach to promote the practical application of Mg-based alloys.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
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
Saif ZS. Al Ghafri, Caitlin Revell, Mauricio Di Lorenzo, Gongkui Xiao, Craig E. Buckley, Eric F. May, Michael Johns
Summary: A comprehensive techno-economic assessment demonstrates the viability of a complete hydrogen supply chain based on the transport of liquefied natural gas (LNG), which can significantly reduce CO2 emissions and meet targeted hydrogen supply costs up to 2050. Steam methane reforming (SMR) with carbon capture and storage (CCS) is the most cost-effective and has the lowest CO2 emission intensity among the assessed hydrogen production technologies. Future technologies and strategies can further reduce cost and supply chain emissions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Thomas A. Hales, Kasper T. Moller, Terry D. Humphries, Anita M. D'Angelo, Craig E. Buckley, Mark Paskevicius
Summary: Metal dodecaborate salts are highly tunable ion conductors. By replacing a [B-H] unit with a Pb atom, the crystal structure of alkali metal salts can be modified to enhance ion conductivity. Li2B11H11Pb center dot xH2O exhibits similar superionic conductivity to LiCB11H12, while Na2B11H11Pb center dot xH2O and the potassium salt show lower conductivities. The divalent B11H11Pb2- anion in the dodecaborate cage may contribute to the weaker ion conductivity compared to CB11H12-. However, the insertion of a lead atom shows promise in enabling high ion conductivity in the solid state.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Amanda Berger, Ainee Ibrahim, Craig E. Buckley, Mark Paskevicius
Summary: Due to insufficient resources, high cost, and safety concerns of Li-ion batteries, alternative technologies are being explored. Multivalent metal batteries with solid-state electrolytes show potential for future battery applications. Divalent hydrated closo-monocarborane salts demonstrate improved ionic conductivity and oxidative stability as solid-state electrolytes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Ainee Ibrahim, Mark Paskevicius, Craig E. E. Buckley
Summary: As the demand for renewable energy increases, the development of energy storage and distribution solutions becomes crucial. Hydrogen, with its high gravimetric energy density, is an abundant energy source that can be used in fuel cells to generate electricity, producing only water vapor as a by-product. In order to improve the volumetric energy density in storage tanks for hydrogen storage and refueling stations, hydrogen compression is required. It is suggested that sodium borohydride (NaBH4), a hydrogen carrier, could be used to transport and chemically compress hydrogen for refueling stations, and the study has demonstrated the chemical compression of hydrogen to over 1000 bar using hydrolysis or methanolysis of NaBH4. Interest has been growing in improving the cost of closed-cycle regeneration of NaBH4 as an energy carrier, and a cost and efficiency analysis shows that it may be cost competitive with alternative methods of hydrogen transport.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Physical
Sruthy Balakrishnan, Terry D. Humphries, Mark Paskevicius, Craig E. Buckley
Summary: Calcium hydride has shown potential as a hydrogen storage and thermochemical energy storage material, but its high operating temperature has limited its application and research on its hydrogen sorption thermodynamics. This study provides experimental data on the thermodynamic properties and activation energy of CaH2 in both solid and molten states, filling the gap in the thermodynamics of the Ca-H system for the first time in over 60 years.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Kyran Williamson, Kasper T. T. Moller, Anita M. M. D'Angelo, Terry D. D. Humphries, Mark Paskevicius, Craig E. E. Buckley
Summary: This study introduces a new reactive carbonate composite (RCC) that uses Fe2O3 to destabilize BaCO3 and reduce its decomposition temperature, making it more suitable for thermal energy storage. The RCC demonstrates promising potential for next-generation thermal energy storage due to its low cost and high energy density. The thermodynamic parameters for the reversible CO2 reactions were determined and found to be significant for the RCC.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Lucie Desage, Terry D. Humphries, Mark Paskevicius, Craig. E. Buckley
Summary: Thermochemical energy storage has the potential to enable large-scale storage of renewable energy by integrating with power production facilities. The use of metal hydrides, particularly calcium hydride with the addition of aluminium, allows for lower operating temperatures and excellent working conditions for thermal energy storage.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Physical
Thomas A. Hales, Kasper T. Moller, Terry D. Humphries, Anita M. D'Angelo, Craig E. Buckley, Mark Paskevicius
Summary: Metal substituted dodecaborate anions coupled with alkali metal cations show promise as solid-state ion conductors for batteries. Substituting a B-H unit in an unsubstituted dodecaborate cage with a tin atom produces a stable and polar divalent anion, resulting in improved ion conductivity. Li2B11H11Sn exhibits high ion conductivity at 130 degrees C, similar to LiCB11H12, but achieving high ion conductivity at room temperature is challenging.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
