Hydrogen storage characteristics of magnesium mechanically alloyed with YNi5-xAlx (x=0, 1 and 3) intermetallics

被引:29
作者
Khrussanova, M
Bobet, JL
Terzieva, M
Chevalier, B
Radev, D
Peshev, P
Darriet, B
机构
[1] Bulgarian Acad Sci, Inst Gen & Inorgan Chem, BU-1113 Sofia, Bulgaria
[2] Univ Bordeaux 1, CNRS UPR 9048, ICMCB, F-33608 Pessac, France
关键词
hydrogen storage materials; energy storage materials; composite materials; rare earth compounds; crystal structure;
D O I
10.1016/S0925-8388(00)00842-2
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The hydrogen sorption properties of the composite materials Mg+10 wt% YNi5-xAlx (x=0, 1 and 3) prepared by ball milling were studied. In the case of YNi2Al3 addition, mixtures with a nominal content of 1 and 50 wt% of the intermetallic compound were also investigated. The crystal structure of the YNi4Al phase was determined (CaCu5 type structure, a=0.4940 nm, c=0.4036 nm). It was established that the presence of YNi4Al or YNi2Al3 in the composites significantly improved the kinetics of hydrogen absorption and desorption, whereas YNi5 did not affect the sorption process. An explanation of the results obtained, based on the catalytic effect of the YNi4Al and YNi2Al3 intermetallics is proposed. It is shown that a higher intermetallic content of the composites is accompanied by: (i) an increase of the initial rate of their hydriding, (ii) a decrease of the maximum hydrogen capacity, and (iii) an increasing of the latent period of dehydriding. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码:283 / 289
页数:7
相关论文
共 28 条
[1]   Structural and hydrogen sorption studies of NdNi5-xAlx and GdNi5-xAlx [J].
Bobet, JL ;
Pechev, S ;
Chevalier, B ;
Darriet, B .
JOURNAL OF ALLOYS AND COMPOUNDS, 1998, 267 (1-2) :136-141
[2]  
BOBET JL, UNPUB INT J HYDROGEN
[3]  
Carvajal J. R., 1990, SAT M POWD DIFFR 15, P127
[4]   THE SYNTHESIS AND HYDROGENATION BEHAVIOR OF SOME NEW COMPOSITE STORAGE MATERIALS - MG-XWT-PERCENT FETI(MN) AND LA2MG17-XWT-PERCENT-LANI5 [J].
DUTTA, K ;
MANDAL, P ;
RAMAKRISHNA, K ;
SRIVASTAVA, ON .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 1994, 19 (03) :253-257
[5]   CRYSTAL-STRUCTURE OF RE-NI4AU COMPOUNDS AND UNIT-CELL CONSTANTS IN YCO5-YNI5-YCU5 SERIES [J].
DWIGHT, AE .
JOURNAL OF THE LESS-COMMON METALS, 1975, 43 (01) :117-120
[6]   Hydrogen absorption of Mg-based composites prepared by mechanical milling: Factors affecting its characteristics [J].
Imamura, H ;
Sakasai, N ;
Kajii, Y .
JOURNAL OF ALLOYS AND COMPOUNDS, 1996, 232 (1-2) :218-223
[7]   Measurement and modelling of hydriding and dehydriding kinetics [J].
Inomata, A ;
Aoki, H ;
Miura, T .
JOURNAL OF ALLOYS AND COMPOUNDS, 1998, 278 (1-2) :103-109
[8]  
IVANOV EI, 1986, DOKL AKAD NAUK SSSR+, V286, P385
[9]   HYDRIDING OF MECHANICALLY ALLOYED MIXTURES OF MAGNESIUM WITH MNO2, FE2O3 AND NIO [J].
KHRUSSANOVA, M ;
TERZIEVA, M ;
PESHEV, P ;
KONSTANCHUK, I ;
IVANOV, E .
MATERIALS RESEARCH BULLETIN, 1991, 26 (07) :561-567
[10]   HYDRIDING KINETICS OF MIXTURES CONTAINING SOME 3D-TRANSITION METAL-OXIDES AND MAGNESIUM [J].
KHRUSSANOVA, M ;
TERZIEVA, M ;
PESHEV, P ;
KONSTANCHUK, I ;
IVANOV, E .
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE NEUE FOLGE, 1989, 164 :1261-1266