Review
Chemistry, Physical
Thi Thu Le, Claudio Pistidda, Van Huy Nguyen, Pardeep Singh, Pankaj Raizada, Thomas Klassen, Martin Dornheim
Summary: This review discusses the progress in using metal hydrides and complex metal hydrides as solid-state hydrogen storage materials, as well as improving their performance through nanoconfinement. Researchers believe that magnesium hydride and lithium borohydride are promising solid-state hydrogen storage materials, but issues of thermodynamic stability and kinetics need to be addressed.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Weitao Shi, Feifan Hong, Renhuan Li, Ruolin Zhao, Sizhi Ding, Ziqi Liu, Peilin Qing, Yi Fan, Haizhen Liu, Jin Guo, Zhiqiang Lan
Summary: MnO2-doped Ti3C2 was used as a catalyst to enhance the hydrogen storage performance of MgH2. The doped sample exhibited good adsorption ability at room temperature and could absorb 5.13 wt% hydrogen in 400 s at 75°C. The composite did not alter the thermodynamic properties of MgH2 and formed multiphase interfaces, improving the hydrogen storage performance. This study provides a new strategy for preparing efficient catalysts for hydrogen storage applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Environmental
Li Ren, Wen Zhu, Qiuyu Zhang, Chong Lu, Fengzhan Sun, Xi Lin, Jianxin Zou
Summary: In this study, a novel hierarchically porous carbon nanofiber was synthesized and used as a support for magnesium hydride/nickel nanoparticles, resulting in improved hydrogen desorption performance. The nanocomposites exhibited faster desorption kinetics, lower onset desorption temperature, and higher hydrogen absorption capacity at a lower temperature.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Chen Gu, Hai-Guang Gao, Peng Tana, Ya-Na Liu, Xiao-Qin Liu, Xiao-Hui Hu, Yun-Feng Zhu, Lin-Bing Sun
Summary: For the first time, researchers propose a facile oxidation-etching-oxidation strategy to expose and optimize abundant internal active sites in a typical MXene (Ti3C2), resulting in significantly enhanced hydrogen storage performance. The obtained cheese-like Ti3C2 with enriched Ti/TiO2 activity sites exhibits much better dehydrogenation temperature and rate compared to ordinary Ti3C2 when applied in Mg-based hydrogen storage.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Haizhen Liu, Chenglin Lu, Xinchun Wang, Li Xu, Xiantun Huang, Xinhua Wang, Hua Ning, Zhiqiang Lan, Jin Guo
Summary: The combination of V2C and Ti3C2 in MgH2 significantly improves hydrogen storage performance, enhancing hydrogen desorption rate and cycling stability. V2C and Ti3C2 promote the hydrogen-releasing process of MgH2 and may facilitate the transfer of hydrogen atoms or molecules through grain boundaries and interfaces. This study provides new insights into the hydrogen storage behaviors and mechanisms of MgH2 catalyzed by MXenes.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Haiguang Gao, Rui Shi, Jinglian Zhu, Yana Liu, Yuting Shao, Yunfeng Zhu, Jiguang Zhang, Liquan Li, Xiaohui Hu
Summary: Sandwich-like Ni/Ti3C2 catalysts were fabricated controllably with interfacial differences via a modified wet chemical method. The Ni/Ti3C2-WE catalyst prepared from mixed solvents showed the best catalytic activity, with electronic interaction and unique catalyst structure being important factors for enhanced activity. This research highlights the significance of interfacial interactions between multiphase catalysts in improving hydrogen storage performance of Mg-based materials.
APPLIED SURFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Li Ren, Wen Zhu, Yinghui Li, Xi Lin, Hao Xu, Fengzhan Sun, Chong Lu, Jianxin Zou
Summary: In this study, 2D TiO2 nanosheets with abundant oxygen vacancies were used to fabricate a flower-like MgH2/TiO2 heterostructure with enhanced hydrogen storage performances. The heterostructure exhibited improved hydrogen desorption temperature, desorption rate, and capacity retention. The synergistic effects of multi-valance of Ti species, accelerated electron transportation caused by oxygen vacancies, formation of catalytic Mg-Ti oxides, and stabilized MgH2 NPs confined by TiO2 nanosheets contributed to the high stability and kinetically accelerated hydrogen storage performances of the composite. The strategy of using 2D substrates with abundant defects to support nano-sized energy storage materials to build heterostructure is promising for the design of high-performance energy materials.
NANO-MICRO LETTERS
(2022)
Article
Chemistry, Analytical
Zhaojie Wu, Jianhua Fang, Na Liu, Jiang Wu, Linglan Kong
Summary: The MgH2+ML-Ti3C2 composite hydrogen storage system was successfully synthesized, reducing the initial desorption temperature to 142°C with a capacity of 6.56%. The kinetics of hydrogen absorption and desorption can be enhanced by ML-Ti3C2, attributed to two synergistic effects: Ti facilitates the dissociation or recombination of hydrogen molecules, and electron transfer generated by multivalent Ti promotes the conversion of hydrogen.
Article
Chemistry, Physical
Yuhang Wang, Guangxin Fan, Dafeng Zhang, Yanping Fan, Baozhong Liu
Summary: The PrF3/Ti3C2 composite prepared by hydrothermal method exhibits superior catalytic activity towards hydrogen storage of MgH2, reducing the dehydrogenation onset temperature and enhancing the hydrogen adsorption/desorption rate, while maintaining a high capacity retention. The enhanced effect of PrF3 on Ti3C2 MXene and the synergistic action between Ti-0, Ti2+, Ti3+ and PrF3 play important roles in improving the hydrogen storage properties of MgH2.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Ihor Zavaliy, Vasyl Berezovets, Roman Denys, Oleksandr Kononiuk, Volodymyr Yartys
Summary: The catalytic effect of eta-Zr3V3O0.6 mixed suboxide and graphite additives on MgH2 properties in hydrogen storage and generation processes was investigated. Hydride composites were obtained by reactive ball milling and characterized using XRD and SEM. The addition of Zr3V3O0.6 and graphite significantly enhanced hydrogen absorption and desorption rates, as well as lowered the activation energy and desorption temperature. The synthesized composite showed improved kinetics and enhanced hydrogenation capacity, making it a promising material for hydrogen storage. The catalytic composites also exhibited efficient hydrogen generation in hydrolysis reaction. Overall, the research received a rating of 8 out of 10.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Multidisciplinary
Sheng Yong, Chengning Yao, Nicholas Hillier, Hyunho Kim, Martin Holicky, Sihui Liu, Regan Doherty, Felice Torrisi, Stephen Beeby
Summary: This study reports a method for introducing MXene into textile-based supercapacitors to enhance their electrochemical performance. By fabricating a porous, flexible, and mechanically durable fiber structure, and depositing MXene or spraying MXene nanosheets onto the textile, MXene was successfully incorporated into the supercapacitors. The experimental results show that the addition of MXene leads to higher areal capacitance and energy density, resulting in improved performance compared to conventional supercapacitors.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Nanoscience & Nanotechnology
Qiwen Lai, Chulaluck Pratthana, Yuwei Yang, Aditya Rawal, Kondo-Francois Aguey-Zinsou
Summary: The thermodynamic behavior of complex borohydrides confined in mesoporous hollow carbon spheres was investigated, showing no variation of equilibrium plateau pressure upon changes in the hydrogen sorption temperatures. This is interpreted as a result of the high pressure within the carbon nanopores, providing a means to control the thermodynamics of nanosized hydrides.
ACS APPLIED NANO MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Bhagirath Saini, K. Harikrishna, Devika Laishram, R. Krishnapriya, Rahul Singhal, Rakesh K. Sharma
Summary: In this study, ZnO-Ti3C2 MXene nanocomposites were synthesized using a simple hydrothermal method. The nanocomposites showed excellent performance in photocatalysis and electrocatalysis applications. The synergistic effect between the 2D layered Ti3C2 and ZnO resulted in enhanced electron-hole lifetime and efficient degradation of dyes. The study also demonstrated that the nanocomposites exhibited excellent hydrogen evolution reaction (HER) performance.
ACS APPLIED NANO MATERIALS
(2022)
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
Metallurgy & Metallurgical Engineering
Yaokun Fu, Lu Zhang, Yuan Li, Sanyang Guo, Han Yu, Wenfeng Wang, Kailiang Ren, Wei Zhang, Shumin Han
Summary: Hydrogen storage is a crucial aspect of the hydrogen economy, and solid-state hydrogen storage is the most promising approach. In this study, a ternary transition metal sulfide FeNi2S4 with a hollow balloon structure was designed as a catalyst for MgH2 to enhance its dehydrogenation/hydrogenation performance by constructing a MgH2/Mg2NiH4-MgS/Fe system.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)