Hydrogenation characteristics of Mg-TiO2 (rutile) composite

被引:85
作者
Wang, P [1 ]
Wang, AM [1 ]
Zhang, HF [1 ]
Ding, BZ [1 ]
Hu, ZQ [1 ]
机构
[1] Chinese Acad Sci, Inst Met Res, State Key Lab RSA, Shenyang 110015, Peoples R China
基金
中国国家自然科学基金;
关键词
energy storage materials; hydrogen-absorbing materials; mechanical alloying; gas-solid reactions;
D O I
10.1016/S0925-8388(00)01188-9
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 nanostructured composite Mg-TiO2 (rutile) was prepared by reaction ball milling (RBM). Under the combined effects of the catalyst n-TiO2 and the mechanical driving force, Mg was hydrided into MgH2 and gamma -MgH2 directly during RBM. The addition of TiO2 resulted in a markedly improved hydrogenation performance of Mg, rapid kinetics, low working temperature and excellent oxidation-resistance. A hydrogenation mechanism of the composite was proposed on the basis of microstructure analysis. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:218 / 223
页数:6
相关论文
共 24 条
[1]   TRITIUM DIFFUSION IN RUTILE (TIO2) [J].
CATHCART, JV ;
PERKINS, RA ;
BATES, JB ;
MANLEY, LC .
JOURNAL OF APPLIED PHYSICS, 1979, 50 (06) :4110-4119
[2]   Effects of oxide additions on electrochemical hydriding and dehydriding behavior of Mg2Ni-type hydrogen storage alloy electrode in 6 M KOH solution [J].
Cui, N ;
Luo, JL .
ELECTROCHIMICA ACTA, 1998, 44 (05) :711-720
[3]   EXAMINATION OF THE CORROSION SUPPRESSION MECHANISM ON N-TITANIUM DIOXIDE PHOTOANODES [J].
GERSTNER, ME .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1979, 126 (06) :944-949
[4]   PROPERTIES OF RUTILE (TITANIUM DIOXIDE) [J].
GRANT, FA .
REVIEWS OF MODERN PHYSICS, 1959, 31 (03) :646-674
[5]   Mg composites for hydrogen storage - The dependence of hydriding properties on composition [J].
Gross, KJ ;
Spatz, P ;
Zuttel, A ;
Schlapbach, L .
JOURNAL OF ALLOYS AND COMPOUNDS, 1997, 261 (1-2) :276-280
[6]   Mechanically milled Mg composites for hydrogen storage - The transition to a steady state composition [J].
Gross, KJ ;
Spatz, P ;
Zuttel, A ;
Schlapbach, L .
JOURNAL OF ALLOYS AND COMPOUNDS, 1996, 240 (1-2) :206-213
[7]   THE INFLUENCE OF PREPARATION ON SEMICONDUCTING RUTILE (TIO2) [J].
HARRIS, LA ;
SCHUMACHER, R .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1980, 127 (05) :1186-1188
[8]   Hydrogen storage capacity of submicron magnesium-nickel alloys [J].
Holtz, RL ;
Imam, MA .
JOURNAL OF MATERIALS SCIENCE, 1997, 32 (09) :2267-2274
[9]  
HOUT J, 1998, J ALLOY COMPD, V266, P307
[10]   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