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Titolo:
Hydrogen desorption mechanism in MgH2-Nb nanocomposites - art. no. 052103
Autore:
Pelletier, JF; Huot, J; Sutton, M; Schulz, R; Sandy, AR; Lurio, LB; Mochrie, SGJ;
Indirizzi:
McGill Univ, Ctr Phys Mat, Montreal, PQ H3A 2T8, Canada McGill Univ Montreal PQ Canada H3A 2T8 Mat, Montreal, PQ H3A 2T8, Canada Inst Rech Hydro Quebec, Varennes, PQ J3X 1S1, Canada Inst Rech Hydro Quebec Varennes PQ Canada J3X 1S1 nes, PQ J3X 1S1, Canada MIT, Ctr Mat Sci & Engn, Cambridge, MA 02139 USA MIT Cambridge MA USA 02139 T, Ctr Mat Sci & Engn, Cambridge, MA 02139 USA
Titolo Testata:
PHYSICAL REVIEW B
fascicolo: 5, volume: 6305, anno: 2001,
pagine: 2103 - NIL_9
SICI:
0163-1829(20010201)6305:5<2103:HDMIMN>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
INSITU X-RAY; ALLOYS; MG;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Pelletier, JF McGill Univ, Ctr Phys Mat, Montreal, PQ H3A 2T8, Canada McGill Univ Montreal PQ Canada H3A 2T8 , PQ H3A 2T8, Canada
Citazione:
J.F. Pelletier et al., "Hydrogen desorption mechanism in MgH2-Nb nanocomposites - art. no. 052103", PHYS REV B, 6305(5), 2001, pp. 2103-NIL_9

Abstract

In situ time-resolved x-ray scattering measurements of hydrogen desorptionin MgH2-Nb nanocomposites using synchrotron radiation are presented. Results show that niobium acts like a catalyst for hydrogen absorption and desorption. It is found that hydrogen desorption involves the formation of a short-lived metastable niobium-hydride phase which acts as a gateway through which hydrogen released from MgH2 is Bowing. The desorption kinetics of thissystem is revealed through temporal profiles showing the lifetimes of the different phases involved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 02:11:40