Article
Energy & Fuels
Zhichao Yu, Xin Liu, Yang Liu, Yuan Li, Zhuohan Zhang, Kangli Chen, Shumin Han
Summary: The hydrogen absorption/desorption kinetics of MgH2 can be significantly improved by using Ni@C@CeO2 as the catalyst. The composites, with 10 wt% Ni@C@CeO2 doped, can absorb 4.51 wt% hydrogen within 60 min at 75 degrees C and release approximately 4.88 wt% hydrogen within 10 min at 325 degrees C. In addition, the composites show excellent cycling performance with no decrease in hydrogen storage capacity, hydrogen uptake rate, and hydrogen release rate after ten cycles at 350 degrees C. The in-situ formation of Mg2NiH4/Mg2Ni and CeH2.73 phases enhances the hydrogen pump effect and accelerates the conversion of Mg2Ni/Mg2NiH4, which contributes to the improved hydrogen storage performance of MgH2.
Article
Materials Science, Multidisciplinary
Jiaxin Zhang, Xin Ding, Ruirun Chen, Wenchao Cao, Yong Zhang, Jingjie Guo
Summary: To enhance the hydrogen storage performance of Mg-rich alloys, element Sc is introduced into Mg-Y-Zn alloy, which effectively enhances the dehydrogenation kinetics and facilitates the decomposition of YH3. Sc-doping weakens H2 sorption but ensures H atom diffusion in the Mg matrix. Sc substitution makes it difficult for hydrogen to diffuse deeper into the samples, resulting in a large ratio of unhydrided Mg.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Feng Wang, Jiageng Liu, Lina Liang, Yikuan Luo, Tuzhi Xiong, M. -Sadeeq Balogun, Zhongmin Wang, Ronghai Yu
Summary: The study improved the hydrogen absorption kinetics of ZrCo alloy by applying Ni/Pd dual metal coating, facilitating the hydriding/dehydriding reactions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
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
Chemistry, Physical
N. N. Sulaiman, M. Ismail, A. H. A. Rashid, N. A. Ali, N. A. Sazelee, S. N. Timmiati
Summary: The hydrogen sorption performances of the 4MgH(2) + LiAlH4 system destabilized with 5 wt% Al2TiO5 showed significantly improved dehydrogenation temperature and kinetics. The introduction of Al2TiO5 resulted in earlier hydrogen liberation and enhanced absorption and desorption kinetics, indicating a synergistic effect on hydrogen storage behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Wei Zhang, Dongliang Zhao, Jun Li, Zeming Yuan, Shihai Guo, Yan Qi, Yanghuan Zhang
Summary: Ball milling Mg-based alloys with transition metal compounds enhances their hydrogen storage performances. In this experiment, La1.7Y0.3Mg16Ni + x wt.% TiF3 (x = 0-10) alloys were prepared using mechanical milling technology. XRD, SEM, HRTEM, and granulometry were used to analyze the composition and microstructure. The addition of TiF3 improves the crystallinity, reduces particle and crystallite sizes, and enhances hydriding and dehydriding kinetics. Adding 7 wt% TiF3 decreases the dehydrogenation activation energy and improves the hydrogen absorption rate at low temperatures.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Metallurgy & Metallurgical Engineering
Hai-chang Zhong, Chen-long Lin, Zi-yu Du, Chun-yan Cao, Chu Liang, Qing-rong Zheng, Le-yang Dai
Summary: LaF3 was doped to the Mg(Al) solid solution alloy to enhance hydrogen absorption and desorption. The results showed that the hydrogen storage kinetic properties were significantly improved in the Mg0.93Al0.07-5wt.%LaF3 nanocomposite, attributed to the reduction of activation energies.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Chemistry, Physical
M. Ismail
Summary: Magnesium hydride (MgH2) is a promising material for solid-state hydrogen storage due to its reversible nature and high storage capacity. However, slow kinetics and high stability have hindered its commercialization. By adding hafnium tetrachloride (HfCl4) as a catalyst, the desorption kinetics and thermodynamics of MgH2 can be improved, with the optimal enhancement observed at 15 wt% HfCl4 doping.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Nanoscience & Nanotechnology
Bing Han, Shaobo Yu, Hui Wang, Yanshan Lu, Huai-Jun Lin
Summary: In this study, Mg85Ni14Ce1 amorphous alloy films with different thicknesses were prepared, and the nanosize effect on hydrogen desorption and cycling properties was investigated. It was found that as the size decreases, the hydrogen storage kinetics of the alloy greatly increase, and the nanosized amorphous alloys can reversibly absorb and desorb hydrogen at a low temperature. Moreover, the alloy structure can be fully recovered after hydrogen absorption and desorption cycles. Therefore, nanosized amorphous alloys are promising candidates for reversible hydrogen storage applications.
SCRIPTA MATERIALIA
(2022)
Review
Materials Science, Multidisciplinary
Xiao Li, Yigang Yan, Torben R. Jensen, Yaroslav Filinchuk, Iurii Dovgaliuk, Dmitry Chernyshov, Liqing He, Yongtao Li, Hai-Wen Li
Summary: Mg(BH4)2 is a high capacity hydrogen storage material with new functions of gas physisorption and ionic conductivity. This review summarizes the recent progress on its energy related functions, including reversible hydrogen storage, gas adsorption, and electrolyte application.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
X. Y. Chen, B. Liu, S. B. Zhang, X. Ding, R. R. Chen
Summary: Ti19Hf4V40Mn35Cr2 alloy with improved hydrogen storage capacity was prepared through low-temperature heat treatment. The microstructure, hydrogen storage properties, and absorption/desorption mechanism were investigated. The results showed that heat treatment resulted in the formation of a large amount of equiaxed dendrite BCC phase and eutectic structure, leading to higher hydrogen storage capacity and lower activation energy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Materials Science, Multidisciplinary
Yaxiong Yang, Xin Zhang, Lingchao Zhang, Wenxuan Zhang, Huifeng Liu, Zhenguo Huang, Limei Yang, Changdong Gu, Wenping Sun, Mingxia Gao, Yongfeng Liu, Hongge Pan
Summary: The storage of hydrogen in a compact, safe and cost-effective manner is crucial for a more sustainable society. Magnesium hydride (MgH2) has attracted attention as a hydrogen carrier but its practical use is limited due to high temperatures and slow kinetics. Catalysis plays a crucial role in enhancing hydrogen cycling kinetics, and research has focused on designing and optimizing catalysts for Mg/MgH2.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
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
Engineering, Environmental
Yongxi Zhang, Yuan Li, Guanjiu Wu, Chenfeng Fan, Lu Zhang, Shumin Han
Summary: Rare earth-Mg-Ni based alloys with increased Mg content show phase transformation and improved stability and hydrogen absorption properties.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Srikanta Panda, Marla V. V. Satya Aditya, Sankara Sarma V. Tatiparti
Summary: In this study, Mg-reduced graphene oxide (rGO), Mg-Ni, and Mg-Ni-rGO nanocomposites were synthesized by ball milling and subsequently hydrogenated for H release experiments. Mg-Ni-rGO demonstrated the unique effects of graphene and nickel addition, with Ni-C interaction and non-stoichiometric Mg2NiHx phase contributing to superior H release. This work highlights the synergetic effect of multiple catalysts on hydrogen release.
SUSTAINABLE ENERGY & FUELS
(2021)