Article
Chemistry, Physical
Long Liang, Qingqing Yang, Shaolei Zhao, Limin Wang, Fei Liang
Summary: Rare-earth hydrogen storage alloy shows a catalytic effect in reducing the dehydrogenation temperature and improving the dehydrogenation kinetics of alane, providing a promising strategy for metal hydride modification.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Gabriel Rodrigues de Almeida Neto, Cesar Augusto Goncalves Beatrice, Daniel Rodrigo Leiva, Luiz Antonio Pessan
Summary: This study investigated the preparation of PEI-LaNi5 composite films for hydrogen storage, demonstrating that PEI films filled with LaNi5 are promising materials for this purpose. The membranes were successfully produced through solvent casting assisted by an ultrasonic bath, and the results showed that the film morphology remained unchanged after hydrogenation cycles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
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, Physical
Hongen Yu, Yong Wu, Shunpeng Chen, Zewei Xie, Yiman Wu, Nuo Cheng, Xue Yang, Wei Lin, Lei Xie, Xingguo Li, Jie Zheng
Summary: In this study, a palladium catalyst loaded on a hydrogen storage support-Pd/LaNi5 was synthesized and its catalytic property in reversible hydrogen storage of N-ethylcarbazole (NEC) was investigated. The results showed that the catalytic performance of 1 wt%Pd/LaNi5 was significantly better than that of Pd/Al2O3 with the same Pd loading. This improvement was attributed to the ample lattice hydrogen bonding sites and fast bulk hydrogen diffusion kinetics of LaNi5.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Ting Wang, Kondo-Francois Aguey-Zinsou
Summary: Borohydride nanoparticles were synthesized successfully using a modified ternary anti-precipitation method. The addition of a co-solvent and the carbon chain length of the stabilising surfactant play crucial roles in controlling particle size. This method offers an effective and simple way to prepare nanosized borohydride particles for hydrogen storage, while reducing the contamination of hydrogen release caused by stabilising surfactants.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Chemistry, Physical
Jean-Marc Joubert, Valerie Paul-Boncour, Fermin Cuevas, Junxian Zhang, Michel Latroche
Summary: This paper provides a comprehensive review of the properties and applications of AB(5) compounds, including crystal structures, formation of metallic hydrides, thermodynamic properties of sorption reaction, and applications in magnetic properties and electrochemical energy storage. It highlights the great potential of this class of materials in gas storage, heat exchange, compression, gas separation, and purification.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Krystyna Giza, Edyta Owczarek
Summary: This study analyzed the corrosion parameters of LaNi5-xMgx hydrogen-absorbing alloys in relation to the degree of magnesium substitution for nickel and the exposure time in a strongly alkaline solution. The results showed that the LaNi5 phase, rich in Mg, corroded easily, and the presence of Mg in LaNi5-xMgx alloys became beneficial for longer exposure times in an alkaline solution.
Article
Chemistry, Physical
Yasukazu Kobayashi, Shohei Yamaoka, Shunta Yamaguchi, Nobuko Hanada, Shohei Tada, Ryuji Kikuchi
Summary: The nano-sized TiFe hydrogen storage alloy was found to be more difficult to activate than the bulk powder, due to the stabilized oxidized surface layers of the nanoparticles preventing the morphological change necessary for activation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Uday Raj Singh, Satyasekhar Bhogilla
Summary: This study presents a comparative analysis of the performance of metal hydride hydrogen storage units using LaNi5 and compacts of LaNi5 incorporated with expanded natural graphite (ENG). The research highlights the need to enhance thermal conductivity to improve heat transfer during hydrogen absorption. The results demonstrate that the use of LaNi5 and ENG compacts significantly improves heat transfer, hydrogen storage capacity, and reduces absorption time.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Atena Zonarsaghar, Mehdi Mousavi-Kamazani, Sahar Zinatloo-Ajabshir
Summary: This study synthesized cerium vanadate nanoparticles using ammonium metavanadate and cerium (III) nitrate hexahydrate, and investigated the effects of different conditions on the nanostructures. Ultrasonic irradiation resulted in fine spherical nanoparticles, while a two-step process produced uniform spherical nanostructures. The spherical nanoparticles of cerium vanadate exhibited a high discharge capacity for hydrogen electrochemical storage.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Busra Arslan, Mustafa Ilbas, Selahattin Celik
Summary: Energy storage, especially thermal energy storage using phase change materials (PCMs), is crucial for efficient energy utilization. This study investigates the use of PCM in a metal hydride (MH) reactor to store and recover heat during hydrogen charge and discharge processes. Experiments were conducted on a LaNi5-H2 reactor with and without PCM, and the effects of hydrogen storage pressure and reactor design on the charge-discharge rate were determined. The results show that designing a hybrid MH-PCM storage system holds promise for the advancement of hydrogen storage and transportation technologies, particularly in vehicles like automobiles and submarines.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Erika M. Dematteis, Fermin Cuevas, Michel Latroche
Summary: The study found that increasing Cu content leads to more secondary phase in the alloy, resulting in a harsher activation process. Substitution of Mn and Cu increases the cell parameter of TiFe, lowering the first plateau pressure and raising the second plateau pressure.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Green & Sustainable Science & Technology
Yang Ye, Yi Yue, Jianfeng Lu, Jing Ding, Weilong Wang, Jinyue Yan
Summary: This paper proposes a novel hydrogen storage reactor design using metal hydride materials, phase change materials, and a heat exchanger to enhance heat transfer efficiency and hydrogen storage performance; the results show that effective thermal conductivity plays a key role in improving heat transfer and reaction rates, and increasing hydrogen supply pressure can effectively accelerate hydrogen absorption rates.
Article
Biochemistry & Molecular Biology
Toyoto Sato, Hiroyuki Saitoh, Reina Utsumi, Junya Ito, Yuki Nakahira, Kazuki Obana, Shigeyuki Takagi, Shin-ichi Orimo
Summary: In this study, the hydrogen absorption reaction of LaNi5 under high pressures above 1 GPa was investigated, and it was found that LaNi5 absorbed 2.07% hydrogen at 6 GPa, indicating a higher hydrogen storage capacity compared to reactions below 1.0 MPa. Additionally, the hydrogen-absorbed LaNi5Hx decomposed into NiH under high-pressure conditions, and a new hydride phase with different crystal parameters was observed.
Article
Chemistry, Physical
Praphatsorn Plerdsranoy, Bunrat Tharat, Sophida Thiangviriya, Pinit Kidkhunthod, Theeranun Siritanon, Suwit Suthirakun, Rapee Utke
Summary: This work aims to optimize the Ni substitution in Mg2FeH6 and form the quaternary intermetallic hydrides of Mg2Fe(1-x)NixH6 with the best kinetics and reversibility. The degree of Ni substitution is enhanced by increasing the Mg2NiH4 content, resulting in improved dehydrogenation kinetics and reversible hydrogen capacities. The structures and dehydrogenation energies of Mg2Fe(1-x)NixH6 with different Ni-substituted contents are simulated and calculated to explain the role of Ni substitution.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)