Investigation on hydrogenation performance of Mg{sub 2}Ni+10 wt.% NbN composite
Abstract
The Mg{sub 2}Ni+10 wt.% NbN composite was prepared by mechanical milling and its hydrogen absorption/desorption properties and microstructure were systematically investigated. XRD results indicated that NbN was stable during ball milling process while partly decomposed into NbN{sub 0.95} and NbH during hydriding/dehydriding cycles irreversibly. The composite exhibited excellent hydrogenation/dehydrogenation kinetics performance with 2.71 wt.% hydrogen absorbed in 60 s at 423 K and 0.81 wt.% hydrogen released in 2 h at 523 K, respectively. The H diffusion constant of the composite reached 14.98×10{sup −5} s{sup −1} which was more than twice increased than that of pure Mg{sub 2}Ni powder. The superior hydrogen storage properties of the composite were ascribed to the refined grain size and abundant N-defect points provided by NbN and NbN{sub 0.95} in the composite. - Graphical abstract: The Mg{sub 2}Ni+10 wt.% NbN composite displays improvements on particle size distribution as well as hydrogen storage properties compared with that of pure Mg{sub 2}Ni. - Highlights: • NbN is introduced into Mg{sub 2}Ni hydride by Ar protected ball-milling. • Surfaces of the additive NbN particle are reduced by Mg{sub 2}NiH{sub 4}. • Hydrogenation kinetic property at 423 K is double improved. • Dehydrogenation capacity at 523 K of compositesmore »
- Authors:
-
- Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004 (China)
- Inner Mongolia Rare Earth Ovonic Metal Hydride Co. Ltd., Baotou 014030 (China)
- Publication Date:
- OSTI Identifier:
- 22443531
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Solid State Chemistry
- Additional Journal Information:
- Journal Volume: 221; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION; ALLOYS; DEHYDROGENATION; DESORPTION; GRAIN SIZE; HYDRIDATION; HYDRIDES; HYDROGEN; HYDROGEN STORAGE; HYDROGENATION; KINETICS; NIOBIUM; NIOBIUM NITRIDES; PARTICLE SIZE; PARTICLES; POWDERS; X-RAY DIFFRACTION
Citation Formats
Zhao, Xin, Han, Shumin, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, Zhu, Yi, Chen, Xiaocui, Ke, Dandan, Wang, Zhibin, Liu, Ting, and Ma, Yufei. Investigation on hydrogenation performance of Mg{sub 2}Ni+10 wt.% NbN composite. United States: N. p., 2015.
Web. doi:10.1016/J.JSSC.2014.10.003.
Zhao, Xin, Han, Shumin, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, Zhu, Yi, Chen, Xiaocui, Ke, Dandan, Wang, Zhibin, Liu, Ting, & Ma, Yufei. Investigation on hydrogenation performance of Mg{sub 2}Ni+10 wt.% NbN composite. United States. https://doi.org/10.1016/J.JSSC.2014.10.003
Zhao, Xin, Han, Shumin, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, Zhu, Yi, Chen, Xiaocui, Ke, Dandan, Wang, Zhibin, Liu, Ting, and Ma, Yufei. 2015.
"Investigation on hydrogenation performance of Mg{sub 2}Ni+10 wt.% NbN composite". United States. https://doi.org/10.1016/J.JSSC.2014.10.003.
@article{osti_22443531,
title = {Investigation on hydrogenation performance of Mg{sub 2}Ni+10 wt.% NbN composite},
author = {Zhao, Xin and Han, Shumin and State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004 and Zhu, Yi and Chen, Xiaocui and Ke, Dandan and Wang, Zhibin and Liu, Ting and Ma, Yufei},
abstractNote = {The Mg{sub 2}Ni+10 wt.% NbN composite was prepared by mechanical milling and its hydrogen absorption/desorption properties and microstructure were systematically investigated. XRD results indicated that NbN was stable during ball milling process while partly decomposed into NbN{sub 0.95} and NbH during hydriding/dehydriding cycles irreversibly. The composite exhibited excellent hydrogenation/dehydrogenation kinetics performance with 2.71 wt.% hydrogen absorbed in 60 s at 423 K and 0.81 wt.% hydrogen released in 2 h at 523 K, respectively. The H diffusion constant of the composite reached 14.98×10{sup −5} s{sup −1} which was more than twice increased than that of pure Mg{sub 2}Ni powder. The superior hydrogen storage properties of the composite were ascribed to the refined grain size and abundant N-defect points provided by NbN and NbN{sub 0.95} in the composite. - Graphical abstract: The Mg{sub 2}Ni+10 wt.% NbN composite displays improvements on particle size distribution as well as hydrogen storage properties compared with that of pure Mg{sub 2}Ni. - Highlights: • NbN is introduced into Mg{sub 2}Ni hydride by Ar protected ball-milling. • Surfaces of the additive NbN particle are reduced by Mg{sub 2}NiH{sub 4}. • Hydrogenation kinetic property at 423 K is double improved. • Dehydrogenation capacity at 523 K of composites is beyond double improved.},
doi = {10.1016/J.JSSC.2014.10.003},
url = {https://www.osti.gov/biblio/22443531},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 221,
place = {United States},
year = {Thu Jan 15 00:00:00 EST 2015},
month = {Thu Jan 15 00:00:00 EST 2015}
}