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Hydrogenation of Magnesium Nickel Boride for Reversible Hydrogen Storage

Li, Wen and Vajo, John J. and Cumberland, Robert W. and Liu, Ping and Hwang, Son-Jong and Kim, Chul and Bowman, Robert C., Jr. (2010) Hydrogenation of Magnesium Nickel Boride for Reversible Hydrogen Storage. Journal of Physical Chemistry Letters, 1 (1). pp. 69-72. ISSN 1948-7185 . https://resolver.caltech.edu/CaltechAUTHORS:20100604-134329483

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Abstract

We report that a ternary magnesium nickel boride (MgNi_(2.5)B_2) mixed with LiH and MgH_2 can be hydrogenated reversibly forming LiBH_4 and Mg_2NiH_4 at temperatures below 300 °C. The ternary boride was prepared by sintering a mechanically milled mixture of MgB_2 and Ni precursors at 975 °C under inert atmosphere. Hydrogenation of the ternary, milled with LiH and MgH_2, was performed under 100 to 160 bar H_2 at temperatures up to 350 °C. Analysis using X-ray diffraction, Fourier transform infrared, and ^(11)B magic angle spinning NMR confirmed that the ternary boride was hydrogenated forming borohydride anions. The reaction was reversible with hydrogenation kinetics that improved over three cycles. This work suggests that there may be other ternary or higher order boride phases useful for reversible hydrogen storage.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/jz900102yDOIArticle
http://pubs.acs.org/doi/abs/10.1021/jz900102yPublisherArticle
ORCID:
AuthorORCID
Hwang, Son-Jong0000-0002-3210-466X
Bowman, Robert C., Jr.0000-0002-2114-1713
Additional Information:© 2009 American Chemical Society. Received Date: October 7, 2009. Accepted Date: October 27, 2009. Published on Web Date: November 06, 2009. We thank the US Department of Energy (DOE contract DE-FC36-05GO15067) and DE-AI-01-05EE11105 for support of this work. We also thank Dr. Jason Zan and Joseph Reiter at the Jet Propulsion Laboratory for assisting with sample handlings. The NMR facility at Caltech was supported by the National Science Foundation (NSF) under Grant Number 9724240 and partially supported by the MRSEC Program of the NSF under Award Number DMR-0520565.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-FC36-05GO15067
NSFDMR-9724240
NSFDMR-0520565
Department of Energy (DOE)DE-Al-01-05EE11105
Subject Keywords:Energy conversion and storage
Issue or Number:1
Record Number:CaltechAUTHORS:20100604-134329483
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20100604-134329483
Official Citation:Hydrogenation of Magnesium Nickel Boride for Reversible Hydrogen Storage Wen Li, John J. Vajo, Robert W. Cumberland, Ping Liu, Son-Jong Hwang, Chul Kim, Robert C. Bowman Jr. The Journal of Physical Chemistry Letters 2010 1 (1), 69-72
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:18568
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:23 Jun 2010 17:21
Last Modified:03 Oct 2019 01:44

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