Interfacial engineering of nickel/vanadium based two-dimensional layered double hydroxide for solid-state hydrogen storage in MgH₂

As a high-density solid-state hydrogen storage material, magnesium hydride (MgH2) is promising for hydrogen transportation and storage. Yet, its stable thermodynamics and sluggish kinetics are unfavorable for that required for commercial application. Herein, nickel/vanadium trioxide (Ni/V2O3) nanopa...

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Main Authors: Gao, Dongqiang, Zhang, Liuting, Song, Mengchen, Wu, Fuying, Wang, Jiao, Zhao, Hu, Li, Hong
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/169125
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1691252023-07-03T01:49:10Z Interfacial engineering of nickel/vanadium based two-dimensional layered double hydroxide for solid-state hydrogen storage in MgH₂ Gao, Dongqiang Zhang, Liuting Song, Mengchen Wu, Fuying Wang, Jiao Zhao, Hu Li, Hong School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Hydrogen Storage Catalysis As a high-density solid-state hydrogen storage material, magnesium hydride (MgH2) is promising for hydrogen transportation and storage. Yet, its stable thermodynamics and sluggish kinetics are unfavorable for that required for commercial application. Herein, nickel/vanadium trioxide (Ni/V2O3) nanoparticles with heterostructures were successfully prepared via hydrogenating the NiV-based two-dimensional layered double hydroxide (NiV-LDH). MgH2 + 7 wt% Ni/V2O3 presented more superior hydrogen absorption and desorption performances than pure MgH2 and MgH2 + 7 wt% NiV-LDH. The initial discharging temperature of MgH2 was significantly reduced to 190 °C after adding 7 wt% Ni/V2O3, which was 22 and 128 °C lower than that of 7 wt% NiV-LDH modified MgH2 and additive-free MgH2, respectively. The completely dehydrogenated MgH2 + 7 wt% Ni/V2O3 charged 5.25 wt% H2 in 20 min at 125 °C, while the hydrogen absorption capacity of pure MgH2 only amounted to 4.82 wt% H2 at a higher temperature of 200 °C for a longer time of 60 min. Moreover, compared with MgH2 + 7 wt% NiV-LDH, MgH2 + 7 wt% Ni/V2O3 shows better cycling performance. The microstructure analysis indicated the heterostructural Ni/V2O3 nanoparticles were uniformly distributed. Mg2Ni/Mg2NiH4 and metallic V were formed in-situ during cycling, which synergistically tuned the hydrogen storage process in MgH2. Our work presents a facile interfacial engineering method to enhance the catalytic activity by constructing a heterostructure, which may provide the mentality of designing efficient catalysts for hydrogen storage. The authors appreciatively acknowledge the financial supports from the National Natural Science Foundation of China (Grant No. 51801078). 2023-07-03T01:49:10Z 2023-07-03T01:49:10Z 2023 Journal Article Gao, D., Zhang, L., Song, M., Wu, F., Wang, J., Zhao, H. & Li, H. (2023). Interfacial engineering of nickel/vanadium based two-dimensional layered double hydroxide for solid-state hydrogen storage in MgH₂. International Journal of Hydrogen Energy, 48(25), 9390-9400. https://dx.doi.org/10.1016/j.ijhydene.2022.12.032 0360-3199 https://hdl.handle.net/10356/169125 10.1016/j.ijhydene.2022.12.032 2-s2.0-85145002533 25 48 9390 9400 en International Journal of Hydrogen Energy © 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering
Hydrogen Storage
Catalysis
spellingShingle Engineering::Mechanical engineering
Hydrogen Storage
Catalysis
Gao, Dongqiang
Zhang, Liuting
Song, Mengchen
Wu, Fuying
Wang, Jiao
Zhao, Hu
Li, Hong
Interfacial engineering of nickel/vanadium based two-dimensional layered double hydroxide for solid-state hydrogen storage in MgH₂
description As a high-density solid-state hydrogen storage material, magnesium hydride (MgH2) is promising for hydrogen transportation and storage. Yet, its stable thermodynamics and sluggish kinetics are unfavorable for that required for commercial application. Herein, nickel/vanadium trioxide (Ni/V2O3) nanoparticles with heterostructures were successfully prepared via hydrogenating the NiV-based two-dimensional layered double hydroxide (NiV-LDH). MgH2 + 7 wt% Ni/V2O3 presented more superior hydrogen absorption and desorption performances than pure MgH2 and MgH2 + 7 wt% NiV-LDH. The initial discharging temperature of MgH2 was significantly reduced to 190 °C after adding 7 wt% Ni/V2O3, which was 22 and 128 °C lower than that of 7 wt% NiV-LDH modified MgH2 and additive-free MgH2, respectively. The completely dehydrogenated MgH2 + 7 wt% Ni/V2O3 charged 5.25 wt% H2 in 20 min at 125 °C, while the hydrogen absorption capacity of pure MgH2 only amounted to 4.82 wt% H2 at a higher temperature of 200 °C for a longer time of 60 min. Moreover, compared with MgH2 + 7 wt% NiV-LDH, MgH2 + 7 wt% Ni/V2O3 shows better cycling performance. The microstructure analysis indicated the heterostructural Ni/V2O3 nanoparticles were uniformly distributed. Mg2Ni/Mg2NiH4 and metallic V were formed in-situ during cycling, which synergistically tuned the hydrogen storage process in MgH2. Our work presents a facile interfacial engineering method to enhance the catalytic activity by constructing a heterostructure, which may provide the mentality of designing efficient catalysts for hydrogen storage.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Gao, Dongqiang
Zhang, Liuting
Song, Mengchen
Wu, Fuying
Wang, Jiao
Zhao, Hu
Li, Hong
format Article
author Gao, Dongqiang
Zhang, Liuting
Song, Mengchen
Wu, Fuying
Wang, Jiao
Zhao, Hu
Li, Hong
author_sort Gao, Dongqiang
title Interfacial engineering of nickel/vanadium based two-dimensional layered double hydroxide for solid-state hydrogen storage in MgH₂
title_short Interfacial engineering of nickel/vanadium based two-dimensional layered double hydroxide for solid-state hydrogen storage in MgH₂
title_full Interfacial engineering of nickel/vanadium based two-dimensional layered double hydroxide for solid-state hydrogen storage in MgH₂
title_fullStr Interfacial engineering of nickel/vanadium based two-dimensional layered double hydroxide for solid-state hydrogen storage in MgH₂
title_full_unstemmed Interfacial engineering of nickel/vanadium based two-dimensional layered double hydroxide for solid-state hydrogen storage in MgH₂
title_sort interfacial engineering of nickel/vanadium based two-dimensional layered double hydroxide for solid-state hydrogen storage in mgh₂
publishDate 2023
url https://hdl.handle.net/10356/169125
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