1
|
Zhou X, Li J, Guan H, Liu J, Lu H, Zhao Y, Chen Y, Wang J, Li Q, Lu Y, Pan F. Enhanced De/hydrogenation Kinetics and Cycle Stability of Mg/MgH 2 by the MnO x-Coated Ti 2C Tx Catalyst with Optimized Ti-H Bond Stability. J Phys Chem Lett 2024; 15:8773-8780. [PMID: 39163560 DOI: 10.1021/acs.jpclett.4c01835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2024]
Abstract
MXene based catalysts can significantly enhance hydrogenation and dehydrogenation (de/hydrogenation) kinetics of Mg/MgH2, but they suffer from uncontrollable catalysts-hydrogen bond strength and structural instability. Here, we propose Tx density control of MXene-based catalysts and MnOx coating as a promising solution. The MnOx@Ti2CTx-catalyzed Mg/MgH2 can release 5.97 wt % H2 at 300 °C in 3 min and 5.60 wt % H2 at 240 °C in 15 min with an activation energy of 75.57 kJ·mol-1. In addition, the samples showed excellent de/hydrogenation-cycle stability, and the degradation of hydrogen storage capacity is negligible even after 100 cycles. DFT calculations combined with XPS analysis showed that the Tx defect on the surface of the MnOx@Ti2CTx catalyst could optimize the strength of the Ti-H bond, accelerating both hydrogen dissociation and diffusion processes. The catalyst's surface properties were protected by the MnOx coating, achieving high chemical and catalytic stability. These findings offer a strategy for surface structure optimization and protection of MXene-based catalysts, realizing controllable catalyst-hydrogen bond strength.
Collapse
Affiliation(s)
- Xiang Zhou
- College of Materials Science and Engineering, National Engineering Research Center for Mg Alloys, National Key Laboratory of Advanced Casting Technologies, National Innovation Center for Industry-Education Integration of Energy Storage Technology, Chongqing University, Chongqing 400045, China
- Chongqing Institute of New Energy Storage Materials and Equipment, Chongqing 401135, China
| | - Jianbo Li
- College of Materials Science and Engineering, National Engineering Research Center for Mg Alloys, National Key Laboratory of Advanced Casting Technologies, National Innovation Center for Industry-Education Integration of Energy Storage Technology, Chongqing University, Chongqing 400045, China
- Chongqing Institute of New Energy Storage Materials and Equipment, Chongqing 401135, China
| | - Haotian Guan
- College of Materials Science and Engineering, National Engineering Research Center for Mg Alloys, National Key Laboratory of Advanced Casting Technologies, National Innovation Center for Industry-Education Integration of Energy Storage Technology, Chongqing University, Chongqing 400045, China
- Chongqing Institute of New Energy Storage Materials and Equipment, Chongqing 401135, China
| | - Jiang Liu
- College of Materials Science and Engineering, National Engineering Research Center for Mg Alloys, National Key Laboratory of Advanced Casting Technologies, National Innovation Center for Industry-Education Integration of Energy Storage Technology, Chongqing University, Chongqing 400045, China
- Chongqing Institute of New Energy Storage Materials and Equipment, Chongqing 401135, China
| | - Heng Lu
- College of Materials Science and Engineering, National Engineering Research Center for Mg Alloys, National Key Laboratory of Advanced Casting Technologies, National Innovation Center for Industry-Education Integration of Energy Storage Technology, Chongqing University, Chongqing 400045, China
- Chongqing Institute of New Energy Storage Materials and Equipment, Chongqing 401135, China
| | - Yingxiang Zhao
- College of Materials Science and Engineering, National Engineering Research Center for Mg Alloys, National Key Laboratory of Advanced Casting Technologies, National Innovation Center for Industry-Education Integration of Energy Storage Technology, Chongqing University, Chongqing 400045, China
- Chongqing Institute of New Energy Storage Materials and Equipment, Chongqing 401135, China
| | - Yu'an Chen
- College of Materials Science and Engineering, National Engineering Research Center for Mg Alloys, National Key Laboratory of Advanced Casting Technologies, National Innovation Center for Industry-Education Integration of Energy Storage Technology, Chongqing University, Chongqing 400045, China
- Chongqing Institute of New Energy Storage Materials and Equipment, Chongqing 401135, China
| | - Jingfeng Wang
- College of Materials Science and Engineering, National Engineering Research Center for Mg Alloys, National Key Laboratory of Advanced Casting Technologies, National Innovation Center for Industry-Education Integration of Energy Storage Technology, Chongqing University, Chongqing 400045, China
- Chongqing Institute of New Energy Storage Materials and Equipment, Chongqing 401135, China
| | - Qian Li
- College of Materials Science and Engineering, National Engineering Research Center for Mg Alloys, National Key Laboratory of Advanced Casting Technologies, National Innovation Center for Industry-Education Integration of Energy Storage Technology, Chongqing University, Chongqing 400045, China
- Chongqing Institute of New Energy Storage Materials and Equipment, Chongqing 401135, China
| | - Yangfan Lu
- College of Materials Science and Engineering, National Engineering Research Center for Mg Alloys, National Key Laboratory of Advanced Casting Technologies, National Innovation Center for Industry-Education Integration of Energy Storage Technology, Chongqing University, Chongqing 400045, China
- Chongqing Institute of New Energy Storage Materials and Equipment, Chongqing 401135, China
| | - Fusheng Pan
- College of Materials Science and Engineering, National Engineering Research Center for Mg Alloys, National Key Laboratory of Advanced Casting Technologies, National Innovation Center for Industry-Education Integration of Energy Storage Technology, Chongqing University, Chongqing 400045, China
- Chongqing Institute of New Energy Storage Materials and Equipment, Chongqing 401135, China
| |
Collapse
|
2
|
Li C, Yang W, Liu H, Liu X, Xing X, Gao Z, Dong S, Li H. Picturing the Gap Between the Performance and US-DOE's Hydrogen Storage Target: A Data-Driven Model for MgH 2 Dehydrogenation. Angew Chem Int Ed Engl 2024; 63:e202320151. [PMID: 38665013 DOI: 10.1002/anie.202320151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Indexed: 07/02/2024]
Abstract
Developing solid-state hydrogen storage materials is as pressing as ever, which requires a comprehensive understanding of the dehydrogenation chemistry of a solid-state hydride. Transition state search and kinetics calculations are essential to understanding and designing high-performance solid-state hydrogen storage materials by filling in the knowledge gap that current experimental techniques cannot measure. However, the ab initio analysis of these processes is computationally expensive and time-consuming. Searching for descriptors to accurately predict the energy barrier is urgently needed, to accelerate the prediction of hydrogen storage material properties and identify the opportunities and challenges in this field. Herein, we develop a data-driven model to describe and predict the dehydrogenation barriers of a typical solid-state hydrogen storage material, magnesium hydride (MgH2), based on the combination of the crystal Hamilton population orbital of Mg-H bond and the distance between atomic hydrogen. By deriving the distance energy ratio, this model elucidates the key chemistry of the reaction kinetics. All the parameters in this model can be directly calculated with significantly less computational cost than conventional transition state search, so that the dehydrogenation performance of hydrogen storage materials can be predicted efficiently. Finally, we found that this model leads to excellent agreement with typical experimental measurements reported to date and provides clear design guidelines on how to propel the performance of MgH2 closer to the target set by the United States Department of Energy (US-DOE).
Collapse
Affiliation(s)
- Chaoqun Li
- School of Energy and Power Engineering, North China Electric Power University, Baoding, 071003, Hebei, China
| | - Weijie Yang
- School of Energy and Power Engineering, North China Electric Power University, Baoding, 071003, Hebei, China
| | - Hao Liu
- School of Energy and Power Engineering, North China Electric Power University, Baoding, 071003, Hebei, China
| | - Xinyuan Liu
- School of Energy and Power Engineering, North China Electric Power University, Baoding, 071003, Hebei, China
| | - Xiujing Xing
- Chemistry Department, University of California, Davis, 95616, United States
| | - Zhengyang Gao
- School of Energy and Power Engineering, North China Electric Power University, Baoding, 071003, Hebei, China
| | - Shuai Dong
- School of Energy and Power Engineering, North China Electric Power University, Baoding, 071003, Hebei, China
| | - Hao Li
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai, 980-8577, Japan
| |
Collapse
|
3
|
Kazaz S, Billeter E, Longo F, Borgschulte A, Łodziana Z. Why Hydrogen Dissociation Catalysts do not Work for Hydrogenation of Magnesium. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2304603. [PMID: 38070182 PMCID: PMC10870026 DOI: 10.1002/advs.202304603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 10/13/2023] [Indexed: 02/17/2024]
Abstract
Provision of atomic hydrogen by hydrogen dissociation catalysts only moderately accelerates the hydrogenation rate of magnesium. They shed light on this well-known but technically challenging fact through a combined approach using an unconventional surface science technique together with Density Functional Theory (DFT) calculations. The calculations demonstrate the drastic electronic structure changes during transformation of Mg to MgH2 , which make fractional hydrogen coverage on the surface, as well as substoichiometric hydrogen content in the bulk energetically unfavorable. Reflecting Electron Energy Loss Spectroscopy (REELS) is used to measure the surface and bulk plasmon during hydrogen sorption in magnesium. The measurements show that the hydrogenation proceeds via the growth of magnesium hydride without the presence of chemisorbed hydrogen on the metallic magnesium surface exactly as indicated by the calculations. This is due to the low stability of sub-stoichiometric amounts of chemisorbed H correlating with the unfavorable charge state of Mg. They are merely bound to the unchanged adjacent Mg layers, thereby explaining the failure of classical hydrogenation catalysts, which effectively only hydrogenate Mg in their direct vicinity. The acceleration of hydrogen sorption kinetics in Mg must affect the polarization in the interface between Mg and MgH2 during hydrogenation.
Collapse
Affiliation(s)
- Selim Kazaz
- Laboratory for Advanced Analytical TechnologiesSwiss Federal Laboratories for Materials Science and Technology EmpaÜberlandstrasse 129DübendorfCH‐8600Switzerland
- Department of ChemistryUniversity of ZurichWinterthurerstrasse 190ZürichCH‐8057Switzerland
| | - Emanuel Billeter
- Laboratory for Advanced Analytical TechnologiesSwiss Federal Laboratories for Materials Science and Technology EmpaÜberlandstrasse 129DübendorfCH‐8600Switzerland
- Department of ChemistryUniversity of ZurichWinterthurerstrasse 190ZürichCH‐8057Switzerland
| | - Filippo Longo
- Laboratory for Advanced Analytical TechnologiesSwiss Federal Laboratories for Materials Science and Technology EmpaÜberlandstrasse 129DübendorfCH‐8600Switzerland
- Department of ChemistryUniversity of ZurichWinterthurerstrasse 190ZürichCH‐8057Switzerland
| | - Andreas Borgschulte
- Laboratory for Advanced Analytical TechnologiesSwiss Federal Laboratories for Materials Science and Technology EmpaÜberlandstrasse 129DübendorfCH‐8600Switzerland
- Department of ChemistryUniversity of ZurichWinterthurerstrasse 190ZürichCH‐8057Switzerland
| | - Zbigniew Łodziana
- Institute of Nuclear PhysicsPolish Academy of SciencesKrakowPL‐31342Poland
| |
Collapse
|
4
|
Xu N, Wang K, Zhu Y, Zhang Y. PdNi Biatomic Clusters from Metallene Unlock Record-Low Onset Dehydrogenation Temperature for Bulk-MgH 2. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2303173. [PMID: 37313794 DOI: 10.1002/adma.202303173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/05/2023] [Indexed: 06/15/2023]
Abstract
Hydrogen storage has long been a priority on the renewable energy research agenda. Due to its high volumetric and gravimetric hydrogen density, MgH2 is a desirable candidate for solid-state hydrogen storage. However, its practical use is constrained by high thermal stability and sluggish kinetics. Here, PdNi bilayer metallenes are reported as catalysts for hydrogen storage of bulk-MgH2 near ambient temperature. Unprecedented 422 K beginning dehydrogenation temperature and up to 6.36 wt.% reliable hydrogen storage capacity are achieved. Fast hydrogen desorption is also provided by the system (5.49 wt.% in 1 h, 523 K). The in situ generated PdNi alloy clusters with suitable d-band centers are identified as the main active sites during the de/re-hydrogenation process by aberration-corrected transmission electron microscopy and theoretical simulations, while other active species including Pd/Ni pure phase clusters and Pd/Ni single atoms obtained via metallene ball milling, also enhance the reaction. These findings present fundamental insights into active species identification and rational design of highly efficient hydrogen storage materials.
Collapse
Affiliation(s)
- Nuo Xu
- School of Materials Science and Engineering, Jiangsu Key Laboratory of Advanced Metallic Materials, Southeast University, Nanjing, 211189, P. R. China
| | - Kaiwen Wang
- Beijing Key Laboratory of Microstructure and Property of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
| | - Yunfeng Zhu
- College of Materials Science and Engineering, Jiangsu Collaborative Innovation Centre for Advanced Inorganic, Function Composites, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Yao Zhang
- School of Materials Science and Engineering, Jiangsu Key Laboratory of Advanced Metallic Materials, Southeast University, Nanjing, 211189, P. R. China
| |
Collapse
|
5
|
Kudiiarov V, Elman R, Pushilina N, Kurdyumov N. State of the Art in Development of Heat Exchanger Geometry Optimization and Different Storage Bed Designs of a Metal Hydride Reactor. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4891. [PMID: 37445204 DOI: 10.3390/ma16134891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/25/2023] [Accepted: 07/03/2023] [Indexed: 07/15/2023]
Abstract
The efficient operation of a metal hydride reactor depends on the hydrogen sorption and desorption reaction rate. In this regard, special attention is paid to heat management solutions when designing metal hydride hydrogen storage systems. One of the effective solutions for improving the heat and mass transfer effect in metal hydride beds is the use of heat exchangers. The design of modern cylindrical-shaped reactors makes it possible to optimize the number of heat exchange elements, design of fins and cooling tubes, filter arrangement and geometrical distribution of metal hydride bed elements. Thus, the development of a metal hydride reactor design with optimal weight and size characteristics, taking into account the efficiency of heat transfer and metal hydride bed design, is the relevant task. This paper discusses the influence of different configurations of heat exchangers and metal hydride bed for modern solid-state hydrogen storage systems. The main advantages and disadvantages of various configurations are considered in terms of heat transfer as well as weight and size characteristics. A comparative analysis of the heat exchangers, fins and other solutions efficiency has been performed, which makes it possible to summarize and facilitate the choice of the reactor configuration in the future.
Collapse
Affiliation(s)
- Viktor Kudiiarov
- Division for Experimental Physics, School of Nuclear Science & Engineering, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Roman Elman
- Division for Experimental Physics, School of Nuclear Science & Engineering, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Natalia Pushilina
- Division for Experimental Physics, School of Nuclear Science & Engineering, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Nikita Kurdyumov
- Division for Experimental Physics, School of Nuclear Science & Engineering, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
| |
Collapse
|
6
|
Yang X, Li W, Zhang J, Hou Q. Hydrogen Storage Performance of Mg/MgH 2 and Its Improvement Measures: Research Progress and Trends. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1587. [PMID: 36837217 PMCID: PMC9966284 DOI: 10.3390/ma16041587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/31/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Due to its high hydrogen storage efficiency and safety, Mg/MgH2 stands out from many solid hydrogen storage materials and is considered as one of the most promising solid hydrogen storage materials. However, thermodynamic/kinetic deficiencies of the performance of Mg/MgH2 limit its practical applications for which a series of improvements have been carried out by scholars. This paper summarizes, analyzes and organizes the current research status of the hydrogen storage performance of Mg/MgH2 and its improvement measures, discusses in detail the hot studies on improving the hydrogen storage performance of Mg/MgH2 (improvement measures, such as alloying treatment, nano-treatment and catalyst doping), and focuses on the discussion and in-depth analysis of the catalytic effects and mechanisms of various metal-based catalysts on the kinetic and cyclic performance of Mg/MgH2. Finally, the challenges and opportunities faced by Mg/MgH2 are discussed, and strategies to improve its hydrogen storage performance are proposed to provide ideas and help for the next research in Mg/MgH2 and the whole field of hydrogen storage.
Collapse
Affiliation(s)
- Xinglin Yang
- School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Wenxuan Li
- School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Jiaqi Zhang
- School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Quanhui Hou
- School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China
- School of Automotive Engineering, Yancheng Institute of Technology, Yancheng 224051, China
| |
Collapse
|
7
|
Hou Q, Zhang J, Zheng Z, Yang X, Ding Z. Ni 3Fe/BC nanocatalysts based on biomass charcoal self-reduction achieves excellent hydrogen storage performance of MgH 2. Dalton Trans 2022; 51:14960-14969. [PMID: 36111985 DOI: 10.1039/d2dt02425j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Bimetallic catalysts offer unique advantages for improving the hydrogen storage performance of MgH2. Herein, Ni3Fe/BC nanocatalysts were prepared via a simple solid phase reduction method using a low-cost biomass charcoal (BC) material as the carrier. The onset temperature of hydrogen release for the MgH2 + 10 wt% Ni3Fe/BC composite was 184.5 °C, which is 155.5 °C lower than that of pure MgH2. The dehydrogenated composite starts to absorb hydrogen at as low as 30 °C and is able to absorb 5.35 wt% of H2 within 10 min under 3 MPa hydrogen pressure at 150 °C. In comparison to pure MgH2, the apparent activation energies of dehydrogenation and rehydrogenation of MgH2 + 10 wt% Ni3Fe/BC were reduced by 52.89 kJ mol-1 and 23.28 kJ mol-1, respectively. The hydrogen storage capacity of the composite was maintained in 20 de/rehydrogenation cycles, indicating a good cycling stability. X-Ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray energy dispersive spectroscopy (EDS) characterization reveal that the in situ formation of multiphases Mg2Ni and Fe catalysts during the hydrogen uptake and release reaction and the transformation of Mg2Ni/Mg2NiH4 together contribute to the superior hydrogen adsorption and desorption performance of MgH2.
Collapse
Affiliation(s)
- Quanhui Hou
- School of Automotive Engineering, Yancheng Institute of Technology, Yancheng, 224051, China.,School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang, 212003, China.
| | - Jiaqi Zhang
- School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang, 212003, China.
| | - Zhu'An Zheng
- School of Automotive Engineering, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Xinglin Yang
- School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang, 212003, China.
| | - Zhao Ding
- College of Materials Science and Engineering, National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, China.
| |
Collapse
|
8
|
Yang X, Zhang J, Hou Q, Guo X. Regulation of Kinetic Properties of Chemical Hydrogen Absorption and Desorption by Cubic K2MoO4 on Magnesium Hydride. NANOMATERIALS 2022; 12:nano12142468. [PMID: 35889692 PMCID: PMC9317334 DOI: 10.3390/nano12142468] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 07/15/2022] [Accepted: 07/15/2022] [Indexed: 01/01/2023]
Abstract
Transition metal catalysts are particularly effective in improving the kinetics of the reversible hydrogen storage reaction for light metal hydrides. Herein, K2MoO4 microrods were prepared using a simple evaporative crystallization method, and it was confirmed that the kinetic properties of magnesium hydride could be adjusted by doping cubic K2MoO4 into MgH2. Its unique cubic structure forms new species in the process of hydrogen absorption and desorption, which shows excellent catalytic activity in the process of hydrogen storage in MgH2. The dissociation and adsorption time of hydrogen is related to the amount of K2MoO4. Generally speaking, the more K2MoO4, the faster the kinetic performance and the shorter the time used. According to the experimental results, the initial dehydrogenation temperature of MgH2 + 10 wt% K2MoO4 composite is 250 °C, which is about 110 °C lower than that of As-received MgH2. At 320 °C, almost all dehydrogenation was completed within 11 min. In the temperature rise hydrogen absorption test, the composite system can start to absorb hydrogen at about 70 °C. At 200 °C and 3 MPa hydrogen pressure, 5.5 wt% H2 can be absorbed within 20 min. In addition, the activation energy of hydrogen absorption and dehydrogenation of the composite system decreased by 14.8 kJ/mol and 26.54 kJ/mol, respectively, compared to pure MgH2. In the cycle-stability test of the composite system, the hydrogen storage capacity of MgH2 can still reach more than 92% after the end of the 10th cycle, and the hydrogen storage capacity only decreases by about 0.49 wt%. The synergistic effect among the new species MgO, MgMo2O7, and KH generated in situ during the reaction may help to enhance the absorption and dissociation of H2 on the Mg/MgH2 surface and improve the kinetics of MgH2 for absorption and dehydrogenation.
Collapse
Affiliation(s)
- Xinglin Yang
- School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China; (J.Z.); (X.G.)
- Correspondence: ; Tel.: +86-1865-2867-102
| | - Jiaqi Zhang
- School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China; (J.Z.); (X.G.)
| | - Quanhui Hou
- School of Automotive Engineering, Yancheng Institute of Technology, Yancheng 224051, China;
| | - Xintao Guo
- School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China; (J.Z.); (X.G.)
| |
Collapse
|
9
|
Thangarasu S, Oh TH. Impact of Polymers on Magnesium-Based Hydrogen Storage Systems. Polymers (Basel) 2022; 14:2608. [PMID: 35808653 PMCID: PMC9269507 DOI: 10.3390/polym14132608] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/20/2022] [Accepted: 06/23/2022] [Indexed: 02/01/2023] Open
Abstract
In the present scenario, much importance has been provided to hydrogen energy systems (HES) in the energy sector because of their clean and green behavior during utilization. The developments of novel techniques and materials have focused on overcoming the practical difficulties in the HES (production, storage and utilization). Comparatively, considerable attention needs to be provided in the hydrogen storage systems (HSS) because of physical-based storage (compressed gas, cold/cryo compressed and liquid) issues such as low gravimetric/volumetric density, storage conditions/parameters and safety. In material-based HSS, a high amount of hydrogen can be effectively stored in materials via physical or chemical bonds. In different hydride materials, Mg-based hydrides (Mg-H) showed considerable benefits such as low density, hydrogen uptake and reversibility. However, the inferior sorption kinetics and severe oxidation/contamination at exposure to air limit its benefits. There are numerous kinds of efforts, like the inclusion of catalysts that have been made for Mg-H to alter the thermodynamic-related issues. Still, those efforts do not overcome the oxidation/contamination-related issues. The developments of Mg-H encapsulated by gas-selective polymers can effectively and positively influence hydrogen sorption kinetics and prevent the Mg-H from contaminating (air and moisture). In this review, the impact of different polymers (carboxymethyl cellulose, polystyrene, polyimide, polypyrrole, polyvinylpyrrolidone, polyvinylidene fluoride, polymethylpentene, and poly(methyl methacrylate)) with Mg-H systems has been systematically reviewed. In polymer-encapsulated Mg-H, the polymers act as a barrier for the reaction between Mg-H and O2/H2O, selectively allowing the H2 gas and preventing the aggregation of hydride nanoparticles. Thus, the H2 uptake amount and sorption kinetics improved considerably in Mg-H.
Collapse
Affiliation(s)
| | - Tae Hwan Oh
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea
| |
Collapse
|
10
|
Abstract
Carbon materials play an important role in the development of solid hydrogen storage materials. The main purpose of this work is to study the low-cost synthesis of biomass carbon (BC) and its positive effect on the hydrogen storage behavior of magnesium hydride (MgH2). Herein, it is proven that when biomass carbon (BC) is used together with magnesium hydride (MgH2), biomass carbon can be used as an adsorption and desorption channel for hydrogen. The initial dehydrogenation temperature of MgH2 + 10 wt% BC composite is 250 °C, which is 110 °C lower than that of pure MgH2. In addition, the MgH2 + 10 wt% BC composite system can complete all dehydrogenation processes within 10 min at 350 °C. Meanwhile, 5.1 wt% H2 can also be dehydrogenated within 1 h at 300 °C. Under the same conditions, MgH2 hardly starts to release hydrogen. After complete dehydrogenation, the composite can start to absorb hydrogen at 110 °C. Under the conditions of 225 °C and 3 MPa, 6.13 wt% H2 can be absorbed within 1 h, basically reaching the theoretical dehydrogenation limit. Cycling experiments show that the MgH2 + 10 wt% BC composite has a good stability. After 10 cycles, the hydrogen storage capacity shows almost no obvious decline. It is believed that this study can help in the research and development of efficient carbon-based multifunctional catalysts.
Collapse
|
11
|
Hou Q, Zhang J, Guo X, Yang X. Improved MgH2 kinetics and cyclic stability by fibrous spherical NiMoO4 and rGO. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104311] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
12
|
Song M, Zhang L, Yao Z, Zheng J, Shang D, Chen L, Li H. Unraveling the degradation mechanism for the hydrogen storage property of Fe nanocatalyst-modified MgH 2. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00863g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Grain growth in MgH2 and Fe nanocatalysts during cycling was directly responsible for capacity loss and kinetic degradation.
Collapse
Affiliation(s)
- Mengchen Song
- School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Liuting Zhang
- School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 639798, Singapore
| | - Zhendong Yao
- School of Materials and Chemistry, China Jiliang University, Hangzhou, 310018, China
| | - Jiaguang Zheng
- School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Danhong Shang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Lixin Chen
- State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Hong Li
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 639798, Singapore
| |
Collapse
|
13
|
Acharya D, Ng D, Xie Z. Recent Advances in Catalysts and Membranes for MCH Dehydrogenation: A Mini Review. MEMBRANES 2021; 11:955. [PMID: 34940456 PMCID: PMC8703480 DOI: 10.3390/membranes11120955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/12/2021] [Accepted: 11/28/2021] [Indexed: 11/16/2022]
Abstract
Methylcyclohexane (MCH), one of the liquid organic hydrogen carriers (LOHCs), offers a convenient way to store, transport, and supply hydrogen. Some features of MCH such as its liquid state at ambient temperature and pressure, large hydrogen storage capacity, its well-known catalytic endothermic dehydrogenation reaction and ease at which its dehydrogenated counterpart (toluene) can be hydrogenated back to MCH and make it one of the serious contenders for the development of hydrogen storage and transportation system of the future. In addition to advances on catalysts for MCH dehydrogenation and inorganic membrane for selective and efficient separation of hydrogen, there are increasing research interests on catalytic membrane reactors (CMR) that combine a catalyst and hydrogen separation membrane together in a compact system for improved efficiency because of the shift of the equilibrium dehydrogenation reaction forwarded by the continuous removal of hydrogen from the reaction mixture. Development of efficient CMRs can serve as an important step toward commercially viable hydrogen production systems. The recently demonstrated commercial MCH-TOL based hydrogen storage plant, international transportation network and compact hydrogen producing plants by Chiyoda and some other companies serves as initial successful steps toward the development of full-fledged operation of manufacturing, transportation and storage of zero carbon emission hydrogen in the future. There have been initiatives by industries in the development of compact on-board dehydrogenation plants to fuel hydrogen-powered locomotives. This review mainly focuses on recent advances in different technical aspects of catalytic dehydrogenation of MCH and some significant achievements in the commercial development of MCH-TOL based hydrogen storage, transportation and supply systems, along with the challenges and future prospects.
Collapse
Affiliation(s)
| | | | - Zongli Xie
- CSIRO Manufacturing, Private Bag 10, Clayton South, Melbourne, VIC 3169, Australia; (D.A.); (D.N.)
| |
Collapse
|