Article
Engineering, Environmental
Mingxing Wei, Yijin Liu, Xiaofei Xing, Zhao Zhang, Tong Liu
Summary: By introducing a specially designed and synthesized high-entropy alloy catalyst, the hydrogen storage properties of MgH2 have been significantly improved, resulting in faster absorption and desorption rates, lower activation energy, and high capacity retention.
CHEMICAL ENGINEERING JOURNAL
(2023)
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
K. Malleswararao, Pramod Kumar, Pradip Dutta, S. Srinivasa Murthy
Summary: This study investigates the hydrogen storage characteristics and thermal storage performance of LaNi4.25Al0.75 alloy in the temperature range of 150°C-200°C. The alloy exhibits a hydrogen storage capacity of 1.20 wt% and can store a total thermal energy of 285.7 kJ.kg-1 and deliver heat at an average rate of 287.5 W.kg-1 with an efficiency of 64.1%.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Yang Ye, Jing Ding, Weilong Wang, Jinyue Yan
Summary: The configuration of phase change materials in hydrogen storage tanks affects the storage performance. Sandwiched MH-PCM units have faster heat transfer and reaction rates due to larger transfer area and smaller thermal resistance. The amount of PCM affects the reaction fraction and can slightly impact absorption and desorption rates when reduced within sufficient limits.
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
Materials Science, Multidisciplinary
Haiyi Wan, Xiu Yang, Shiming Zhou, Lei Ran, Yangfan Lu, Yu'an Chen, Jingfeng Wang, Fusheng Pan
Summary: In this study, the successful preparation of FeCoNiCrMn high entropy alloy (HEA) loaded MgH2 and HEA's effect on the hydrogen storage properties of Mg/MgH2 were reported. The HEA demonstrated high catalytic activity for hydrogen dissociation and recombination reaction, lowering the activation energy of dehydrogenation reaction. Furthermore, the reaction between Co, Ni, and Mg enhanced the dehydrogenation reaction through the hydrogen pumping mechanism. The loaded HEA composite exhibited robustness against particle aggregation, enabling stable reversible hydrogen storage processes.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Lingchao Zhang, Ke Wang, Yongfeng Liu, Xin Zhang, Jianjiang Hu, Mingxia Gao, Hongge Pan
Summary: The study successfully reduced the dehydrogenation onset temperature of MgH(2) by synthesizing TiNb(2)O(7) composite oxide catalyst, achieving more efficient hydrogen storage and release. Additionally, the catalyst exhibited stable performance at low temperatures and good cycling stability.
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
Nanoscience & Nanotechnology
X. L. Zhang, X. Zhang, L. C. Zhang, Z. G. Huang, F. Fang, J. J. Hu, Y. X. Yang, M. X. Gao, H. G. Pan, Y. F. Liu
Summary: Nano-ZrO2 catalyst synthesized through a solvothermal process exhibits superior catalytic activity and hydrogenation kinetics in MgH2 for hydrogen storage, enabling hydrogen release and uptake at lower temperatures.
MATERIALS TODAY NANO
(2022)
Article
Engineering, Environmental
Ke Wang, Xin Zhang, Yongfeng Liu, Zhuanghe Ren, Xuelian Zhang, Jianjiang Hu, Mingxia Gao, Hongge Pan
Summary: This study developed a novel graphene-guided nucleation and growth process to prepare N-doped Nb2O5 nanorods, which significantly improved the hydrogen storage properties of MgH2. MgH2 doped with the nanorods released a substantial amount of hydrogen at lower temperatures, and demonstrated faster kinetics in reloading hydrogen.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Zhiqiang Lan, Xiaobin Wen, Liang Zeng, Ziqi Luo, Huiren Liang, Weitao Shi, Feifan Hong, Haizhen Liu, Hua Ning, Wenzheng Zhou, Jin Guo
Summary: The incorporation of (Ni-V2O3)@C nanoparticles was introduced to enhance the hydrogen storage performance of Mg/MgH2 systems. The composite sample exhibited improved hydrogenation and dehydrogenation kinetics, with a lower initial hydrogenation temperature and higher hydrogen absorption and desorption capacities compared to pristine MgH2. The addition of (Ni-V2O3)@C nanoparticles acted as a hydrogen pump, promoting hydrogen diffusion and dissociation within the Mg/MgH2 system.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Mengchen Song, Runkai Xie, Liuting Zhang, Xuan Wang, Zhendong Yao, Tao Wei, Danhong Shang
Summary: Efficient catalysts composed of Ce and Ni (CeNi5 alloy) were successfully synthesized, which significantly improved the hydrogen storage performance of magnesium hydride (MgH2). The addition of CeNi5 reduced the initial hydrogen release temperature and increased the hydrogen absorption capacity of MgH2. The merging of Gateway and Spillover effects in one catalyst enhanced the hydrogen storage kinetics of MgH2, suggesting a potential design strategy for highly-effective catalysts in the future.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Article
Chemistry, Physical
Zhichao Yu, Wei Zhang, Yongxi Zhang, Yaokun Fu, Ying Cheng, Sanyang Guo, Yuan Li, Shumin Han
Summary: Magnesium hydroxide (MgH2) is a promising material for hydrogen storage, but it has high dehydrogenation temperature and slow sorption kinetics. This study introduces rare earth hydrides and transition metals to improve the de/hydrogenation kinetics of MgH2. The synthesized MgH2-Mg2NiH4-CeH2.73 composite exhibits superior hydrogenation/dehydrogenation characteristics and cycling stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Zhiwen Zheng, Cong Peng, Qingan Zhang
Summary: In this work, the hydrogen storage properties of the Mg85Zn6Y9 alloy with 94 wt.% of 18R-type LPSO phase were investigated. The 18R phase easily decomposes into various phases during ball milling under a hydrogen atmosphere. The Mg85Zn6Y9 alloy exhibits better hydrogen storage kinetics and cycle durability compared to pure Mg due to the catalytic effect of YH2/YH3 and the inhibition role of the Laves phase.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
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)
