High-throughput synthesis and screening of hydrogen-storage alloys
High-throughput synthesis and screening of hydrogen-storage alloys
Libraries of mixed-metal hydride materials are synthesized on a silicon microfabricated array of “hot-plate” MEMS devices, which allow high-throughput screening using temperature programmed desorption and infrared thermography. The heating plate of the MEMS device is a membrane with low heat capacity, allowing fast and localized temperature control and the extraction of calorimetric data from thermography. The combination of the synthetic method and screening chip allows a fast determination of the desorption temperature and hydrogen content of the materials. Mixed metal hydrides are synthesized directly. The potential of the method is exemplified by presenting results for the sorption properties of MgxNi1?x hydride thin-film materials. The results are consistent with the literature, showing the highest hydrogen capacity and desorption temperature for the MgH2 phase in Mg-rich compositions and the promotion of a lower temperature desorption from the Mg2NiH4 phase, with a concomitant reduction in hydrogen capacity.
physical vapor-deposition, films, kinetics, magnesium, gas sensor, libraries, arrays, combinatorial approach, nickel, hydrides
37-43
Guerin, Samuel
e185e0c2-85c6-4d1c-a2cf-cd2f410d346f
Hayden, Brian E.
aea74f68-2264-4487-9d84-5b12ddbbb331
Smith, Duncan C.A.
b96cf343-537e-4e4b-a60f-e90e9c460606
January 2008
Guerin, Samuel
e185e0c2-85c6-4d1c-a2cf-cd2f410d346f
Hayden, Brian E.
aea74f68-2264-4487-9d84-5b12ddbbb331
Smith, Duncan C.A.
b96cf343-537e-4e4b-a60f-e90e9c460606
Guerin, Samuel, Hayden, Brian E. and Smith, Duncan C.A.
(2008)
High-throughput synthesis and screening of hydrogen-storage alloys.
Journal of Combinatorial Chemistry, 10 (1), .
(doi:10.1021/cc700104s).
Abstract
Libraries of mixed-metal hydride materials are synthesized on a silicon microfabricated array of “hot-plate” MEMS devices, which allow high-throughput screening using temperature programmed desorption and infrared thermography. The heating plate of the MEMS device is a membrane with low heat capacity, allowing fast and localized temperature control and the extraction of calorimetric data from thermography. The combination of the synthetic method and screening chip allows a fast determination of the desorption temperature and hydrogen content of the materials. Mixed metal hydrides are synthesized directly. The potential of the method is exemplified by presenting results for the sorption properties of MgxNi1?x hydride thin-film materials. The results are consistent with the literature, showing the highest hydrogen capacity and desorption temperature for the MgH2 phase in Mg-rich compositions and the promotion of a lower temperature desorption from the Mg2NiH4 phase, with a concomitant reduction in hydrogen capacity.
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e-pub ahead of print date: 12 December 2007
Published date: January 2008
Keywords:
physical vapor-deposition, films, kinetics, magnesium, gas sensor, libraries, arrays, combinatorial approach, nickel, hydrides
Organisations:
Chemistry
Identifiers
Local EPrints ID: 54459
URI: http://eprints.soton.ac.uk/id/eprint/54459
ISSN: 1520-4766
PURE UUID: a4ff445f-2edd-4868-a1a2-f827fa78b4b2
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Date deposited: 06 Aug 2008
Last modified: 16 Mar 2024 02:36
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Contributors
Author:
Samuel Guerin
Author:
Duncan C.A. Smith
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