Particle decoration in super critical fluid to improve the hydrogen sorption cyclability of magnesium

被引:22
作者
Bobet, J. L.
Aymonier, C.
Mesguich, D.
Cansell, F.
Asano, K.
Akiba, E.
机构
[1] Univ Bordeaux 1, Inst Chim Mat Condensee Bordeaux, CNRS, F-33608 Pessac, France
[2] Univ Bordeaux 1, ENSCPB, F-33608 Pessac, France
[3] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan
关键词
H sorption; kinetics; activation energy; diffusion;
D O I
10.1016/j.jallcom.2006.03.095
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
Hydrogen is now one of the potential vectors of energy for the future. To overcome the problems of hydrogen storage, many works are focused towards the development of new materials. In this paper, new composite materials Mg @ metal catalysts (Ni or Pd) are synthesized with an original route, the chemical fluid deposition process in supercritical fluids. The two studied materials (Mg @ Ni and Mg @ Pd) show the potentiality of the CFD route in supercritical fluids to decor surfaces with a structuration from the micrometer scale down to the nanometer one. Regarding hydrogen sorption, the catalytic effect of Ni is higher than the one of palladium. The cyclability is hugely improved with 'SCF materials' in comparison with ball milling ones because the catalysts stay always on the magnesium particle surface. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:250 / 254
页数:5
相关论文
共 19 条
[1]  
ALEFED G, 1978, HYDROGEN METALS, P1
[2]   Supercritical fluid technology of nanoparticle coating for new ceramic materials [J].
Aymonier, C ;
Elissalde, C ;
Reveron, H ;
Weill, F ;
Maglione, M ;
Cansell, F .
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2005, 5 (06) :980-983
[3]   Effect of Nb2O5 content on hydrogen reaction kinetics of Mg [J].
Barkhordarian, G ;
Klassen, T ;
Bormann, R .
JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 364 (1-2) :242-246
[4]   Study of Mg-M (M = Co, Ni and Fe) mixture elaborated by reactive mechanical alloying - hydrogen sorption properties [J].
Bobet, JL ;
Akiba, E ;
Nakamura, Y ;
Darriet, B .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2000, 25 (10) :987-996
[5]   Addition of nanosized Cr2O3 to magnesium for improvement of the hydrogen sorption properties [J].
Bobet, JL ;
Desmoulins-Krawiec, S ;
Grigorova, E ;
Cansell, F ;
Chevalier, B .
JOURNAL OF ALLOYS AND COMPOUNDS, 2003, 351 (1-2) :217-221
[6]   Hydrogen sorption of Mg-based mixtures elaborated by reactive mechanical grinding [J].
Bobet, JL ;
Chevalier, B ;
Song, MY ;
Darriet, B ;
Etourneau, J .
JOURNAL OF ALLOYS AND COMPOUNDS, 2002, 336 (1-2) :292-296
[7]  
BOBET JL, 2006, IN PRESS J MAT SCI
[8]   Review on materials science and supercritical fluids [J].
Cansell, F ;
Aymonier, C ;
Loppinet-Serani, A .
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE, 2003, 7 (4-5) :331-340
[9]   Hydrogen sorption properties of an Mg+WO3 mixture made by reactive mechanical alloying [J].
Castro, FJ ;
Bobet, JL .
JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 366 (1-2) :303-308
[10]   Magnesium-based hydrogen storage materials modified by mechanical alloying [J].
Cui, N ;
He, P ;
Luo, JL .
ACTA MATERIALIA, 1999, 47 (14) :3737-3743