The substitution of NaMgH3 for MgH2 greatly enhancing the hydrogen storage performance and mechanism of Li-Mg-N-H system
Source abstract
Abstract
Metal nitrogen hydride (Li-Mg-N-H) is regarded as an ideal hydrogen storage material for automotive applications due to its advantages of high hydrogen storage capacity (5.6 wt%), low operating temperature, and good cycling performance, but the comprehensive hydrogen storage performance of this material still could be improved. For this reason, this paper constructed a Li-Na-Mg-N-H composite system by synthesizing NaMgH 3 to replace MgH 2 in the Li-Mg-N-H system. The improvement of the hydrogen absorption and desorption properties of the composite system after the replacement of MgH 2 by NaMgH 3 was investigated. Various properties and test results showed that the composite system after the replacement of MgH 2 by NaMgH 3 showed better hydrogen absorption and desorption properties. The initial/peak hydrogen release temperatures of Li-Na-Mg-N-H decreased from 135 ˚C/245 ˚C to 105 ˚C/145 ˚C, and the apparent activation energy of hydrogen release was reduced from 114.90 to 104.05 kJ/mol which means the kinetics of hydrogen absorption and desorption was greatly improved. The mechanism study shows that NaMgH 3 will react with LiNH 2 and forms the intermediate product Li 3Na(NH 2) 4 during the hydrogen release process, which changes the hydrogen desorption pathway of the composite system and thus the hydrogen absorption and desorption kinetics were improved.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Hydrogen Storage and Materials · Ammonia Synthesis and Nitrogen Reduction · Hybrid Renewable Energy Systems
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (56)
Show source-provided references
1. Effects of hydrogen cycling on the performance of 70 MPa high-pressure hydrogen storage tank liners formed by different processes10.1016/j.ijhydene.2024.07.345 ↗
2. Dehydrogenation of Mg-Fe-Ni-H based hydrogen storage tank under different operating temperatures and hydrogen flow rates10.1016/j.ijhydene.2023.10.169 ↗
3. A focused review of the hydrogen storage tank embrittlement mechanism process10.1016/j.ijhydene.2022.12.252 ↗
4. Hydrogen storage in liquid hydrogen carriers: recent activities and new trends10.1088/2516-1083/acac5c ↗
5. Graphene oxide/epoxy composites with enhanced fracture toughness for liquid hydrogen storage10.1002/pat.5879 ↗
6. The hydrogen storage capacity of carbon nano-onions fabricated by thermal chemical vapour deposition10.1016/j.ijhydene.2023.03.156 ↗
7. Hydrogen sorption by nanostructures at low temperatures (Review article)10.1063/10.0017811 ↗
8. Advanced hydrogen storage alloys for Ni/MH rechargeable batteries10.1039/C0JM01921F ↗
9. An investigation on the structural and electrochemical properties of La0.7Mg0.3(Ni0.85Co0.15)x (x=3.15–3.80) hydrogen storage electrode alloys10.1016/S0925-8388(02)01045-9 ↗
10. The future of hydrogen economy: Role of high entropy alloys in hydrogen storage10.1016/j.jallcom.2024.175668 ↗
11. Analysis of phase transformation in Mg2NiH4 via in situ synchrotron X-ray measurements10.1016/j.jallcom.2022.168594 ↗
12. High pressure solidification of alloying substitution and promotion of hydrogen storage properties in AB2-type Y-Zr-Ti-Fe based alloys10.1016/j.jallcom.2022.167992 ↗
13. Achieving both high hydrogen capacity and low decomposition temperature of the metastable AlH3 by proper ball milling with TiB210.1016/j.ijhydene.2022.10.198 ↗
14. Heterojunction synergistic catalysis of MXene-supported PrF3 nanosheets for the efficient hydrogen storage of AlH310.1007/s12274-023-5875-8 ↗
15. A mechanical-force-driven physical vapour deposition approach to fabricating complex hydride nanostructures10.1038/ncomms4519 ↗
16. Modification research on the hydrogen storage performance of bimetallic oxide Zn2Ti3O8 on MgH210.1016/j.jallcom.2024.175307 ↗
17. LiBH4 hydrogen storage system with low dehydrogenation temperature and favorable reversibility promoted by metallocene additives10.1016/j.est.2023.108679 ↗
18. Tailoring reversible hydrogen storage performance of NaAlH4 through NiTiO3 nanorods10.1016/j.jallcom.2023.172689 ↗
19. A bulk versus nanoscale hydrogen storage paradox revealed by material-system co-design10.1002/adfm.202411763 ↗
20. Behavior of lithium amide under argon plasma
21. Atomic reconstruction for realizing stable solar-driven reversible hydrogen storage of magnesium hydride10.1038/s41467-024-47077-y ↗
22. Evaluation of the hydrogen storage behavior of a LiNH2+MgH2 system with 1:1 ratio10.1016/j.jpowsour.2007.07.037 ↗
23. Size-dependent kinetic enhancement in hydrogen absorption and desorption of the Li−Mg−N−H system10.1021/ja806565t ↗
24. Investigation of the processes for reversible hydrogen storage in the Li–Mg–N–H system10.1016/j.jpowsour.2006.11.046 ↗
25. Realizing 6.7 wt% reversible storage of hydrogen at ambient temperature with non-confined ultrafine magnesium hydrides10.1039/D0EE03160G ↗
26. A nanoscale ternary amide-rGO composite with boosted kinetics for reversible H2 storage
27. Improving hydrogen storage performance of Li–Mg–N–H system by adding niobium hydride10.1007/s12598-013-0201-3 ↗
28. Enhancement of Ti-Cr-V BCC alloys on the dehydrogenation kinetics of Li-Mg-N-H hydrogen storage materials10.1007/s12598-010-0181-5 ↗
29. Superior catalytic activity derived from a two-dimensional Ti3C2 precursor towards the hydrogen storage reaction of magnesium hydride10.1039/C5CC08801A ↗
30. Understanding the role of K in the significantly improved hydrogen storage properties of a KOH-doped Li–Mg–N–H system10.1039/c3ta01071f ↗
31. Improved overall hydrogen storage properties of a CsH and KH co-doped Mg(NH2)2/2LiH system by forming mixed amides of Li–K and Cs–Mg10.1039/C7RA05166B ↗
32. The effects of ball milling and molar ratio of LiH on the hydrogen storage properties of nanocrystalline lithium amide and lithium hydride (LiNH2+LiH) system10.1016/j.jallcom.2009.11.035 ↗
33. The effect of milling energy input and molar ratio on the dehydrogenation and thermal conductivity of the (LiNH2+nMgH2) (n = 0.5, 0.7, 0.9, 1.0, 1.5 and 2.0) nanocomposites10.1016/j.ijhydene.2014.04.212 ↗
34. Mixed metal amide-hydride solid solutions for potential energy storage applications10.1021/acs.inorgchem.4c01016 ↗
35. Improved hydrogen storage properties of Li-Mg-N-H system by lithium vanadium oxides10.1016/j.jallcom.2022.167603 ↗
36. CeB6 nanoparticles modified Mg(NH2)2-2LiH with superior (de)hydrogenation kinetics and reversible hydrogen storage properties: an experimental and theoretical study
37. Compositional effects on the hydrogen storage properties of Mg(NH2)2–2LiH–xKH and the activity of KH during dehydrogenation reactions10.1039/c3dt52296b ↗
38. Synthesis of CsH and its effect on the hydrogen storage properties of the Mg(NH2)2-2LiH system10.1016/j.ijhydene.2016.04.057 ↗
39. Potassium, rubidium and cesium hydrides as dehydrogenation catalysts for the lithium amide/magnesium hydride system10.1016/j.ijhydene.2014.12.056 ↗
40. Rubidium hydride: an exceptional dehydrogenation catalyst for the lithium amide/magnesium hydride system10.1021/jp400961k ↗
41. A dual borohydride (Li and Na borohydride) catalyst/additive together with intermetallic FeTi for the optimization of the hydrogen sorption characteristics of Mg(NH2)2/2LiH10.1039/C9DT02270H ↗
42. Role of the in situ formed LiAl(NH)2 and LiNH2 in significantly improving the hydrogen storage properties of the Mg(NH2)2-2LiH systems with Li3AlH6 addition10.1016/j.jallcom.2024.175260 ↗
43. Effects of metal borohydrides on the dehydrogenation kinetics of the Li–Mg–N–H hydrogen-storage system10.1021/acs.jpcc.3c00630 ↗
44. Improved hydrogen sorption characteristics of Mg(NH2)2-2 LiH/Li4BH4(NH2)3 using SrH2 and MgF2 auto-catalyst10.1016/j.ijhydene.2024.01.054 ↗
45. Synergetic effects of in situ formed CaH2 and LiBH4 on hydrogen storage properties of the Li–Mg–N–H system10.1002/asia.201200938 ↗
46. Structure of ternary imide Li2Ca(NH)2 and hydrogen storage mechanisms in amide−hydride system10.1021/ja800300e ↗
47. Local defects enhanced dehydrogenation kinetics of the NaBH4-added Li–Mg–N–H system10.1039/C0CP00340A ↗
48. Thermochemical transformation and reversible performance of Mg(NH2)2-NaMgH3 system10.1016/j.ijhydene.2020.06.094 ↗
49. Thermodynamic and kinetic investigations of the hydrogen storage in the Li–Mg–N–H system10.1016/j.jallcom.2005.02.010 ↗
50. Hydrogen absorption and desorption in Mg–Na–N–H system10.1016/j.jallcom.2004.10.062 ↗
51. Enhancement effect of Ce hydride on hydrogen storage performance of Mg(NH2)2-2LiH10.1016/j.jallcom.2023.172247 ↗
52. Mechanistic investigations on the heterogeneous solid-state reaction of magnesium amides and lithium hydrides10.1021/jp061496v ↗
53. Synthesis and decomposition of Li3Na(NH2)4 and investigations of Li–Na–N–H based systems for hydrogen storage10.1039/C5CP06719G ↗
54. Catalytic effects of in-situ CeN/CeH2.51 on the hydrogen storage properties of Mg(NH2)2–2LiH10.1016/j.ijhydene.2024.01.360 ↗
55. Improvement of the hydrogen-storage performances of Li–Mg–N–H system10.1557/jmr.2007.0165 ↗
56. Hydrogen storage reaction over a ternary imide Li2Mg2N3H310.1039/c000271b ↗