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
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
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
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
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
Energy & Fuels
Zbigniew Lodziana
Summary: Hydrogen in solid state compounds is considered a safe method of energy storage, but the ultimate materials for this purpose remain unknown. Theoretical investigations based on quantum mechanics have a well-established position, but their application for design of new alloys for reversible hydrogen storage is rare. Mainstream research focuses on predicting thermodynamic and structural properties of hydrides, while kinetic effects related to hydrogen transport present challenges that cannot be easily automated.
FRONTIERS IN ENERGY RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Min Liu, Bo Zhao, Yaze Li, Zhen Wang, Xuesong Zhang, Liang Tong, Tianqi Yang, Xuefang Li, Jinsheng Xiao
Summary: This study investigated the effects of fin structure and injection tube on the performance of a hydrogen storage tank packed with LaNi5 alloy. A parametric study was conducted to optimize the tank design and improve its efficiency and safety. The results showed that the fin structure improved heat transfer performance and the injection tube enhanced hydrogen mass transfer in the tank.
Article
Thermodynamics
Liang Tong, Chengqing Yuan, Tianqi Yang, Pierre Benard, Yupeng Yuan, Jinsheng Xiao
Summary: Various thermal management methods are widely adopted in the metal hydride (MH) system to release the thermal effect and obtain acceptable hydrogen storage performance. In this study, an axisymmetric numerical model for a simple MH system without a heat exchanger (HE) has been established and validated to study the system performance during dehydriding. The coiled-tube heat exchanger (CTHE) shows more obvious impact than the phase change material heat exchanger (PCMHE) in improving the performance of the MH system during dehydriding.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Energy & Fuels
Faouzi Askri, Fatma Bouzgarrou
Summary: This article presents a numerical investigation of two discharging procedures of a metal hydride-hydrogen storage tank, and compares the simultaneous procedure with the separated procedure for the first time. The simulation results show that the simultaneous procedure is faster than the separated procedure.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Thermodynamics
K. Sarath Babu, E. Anil Kumar, S. Srinivasa Murthy
Summary: Thermochemical energy storage based on coupled hydride beds is a promising option for Concentrated Solar Power plant applications due to its efficient long term and high energy storage density. This study evaluates the thermodynamic properties and proposes a new methodology for thermal energy storage and recovery. The performance parameters such as heat upgradation, coefficient of performance (COP), and energy storage density (ESD) are analyzed using measured properties. The effects of heat source temperature, regeneration temperature, and ambient temperature on the performance of the system are also studied.
APPLIED THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
Mahvash Afzal, Nitin Sharma, Nandlal Gupta, Pratibha Sharma
Summary: In this study, a 50 kg LaNi5 based shell and tube type metal hydride hydrogen storage reactor was investigated. The design process for the reactor was presented and its performance analysis was carried out numerically. The study found that the reactor performance was promising under the appropriate operating conditions, with the supply pressure and heat transfer fluid flow rate having little effect on the performance, and the initial bed temperature having no significant impact.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Mario Bedrunka, Nils Bornemann, Gerd Steinebach, Dirk Reith
Summary: This paper presents a feasibility study on on-board metal hydride storage systems, highlighting their advantages in replacing counterweights and utilizing heat emissions for energy. The main challenge lies in designing a system that can provide sufficient energy over a long period. The study concludes that using a metal hydride system shows great potential for practical applications in forklifts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
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, Physical
Gamze Atalmis, Mehmet Demiralp, Nebi Yelegen, Yuksel Kaplan
Summary: This study investigates the process parameters that affect the improvement of hydrogen storage material properties. The thermal conductivity of the storage materials has been improved to accelerate the hydrogen charge/discharge processes and obtain the required hydrogen at desired flow rates in a short time. The experimental results show that coating the storage material with copper increases heat transfer, reduces the hydrogen charging time, and improves stable discharge time in the metal hydride reactor.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Mahvash Afzal, Pratibha Sharma
Summary: This study conducted design and performance analysis for a 10 kWh metal hydride based hydrogen storage system with distinctive heat transfer enhancements. The system showed improved performance under different operating conditions, achieving up to 90% absorption in 7200 s at optimal conditions. The addition of the heat transfer enhancements significantly enhanced reactor performance with minimal increase in system weight.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
