摘要
In this paper,the microstructure and hydrogen storage properties of the（NaH/Al）+x（molar fraction,%） Ti（x=0,4,6, 10） composites were investigated.It was found that the reversible hydrogen storage properties can be improved by mechanically ball-milling the（NaH/Al） mixture together with Ti powder.H2 is a better ball-milling atmosphere than Ar,because a part of NaH is consumed during the ball-milling under an Ar atmosphere.As the Ti content increases,the hydrogen storage properties are enhanced gradually.In case of x=10,the reversible hydrogen absorption/desorption capacities of the composites milled for 6 h under the H2 atmosphere reach 4.01% and 3.93%（mass fraction）,respectively.The catalytic mechanism of the Ti-doped NaH/Al composites system is discussed briefly.
In this paper, the microstructure and hydrogen storage properties of the （NaH/Al） ＋ x （ molar fraction, % ） Ti（x = 0, 4, 6, 10） composites were investigated. It was found that the reversible hydrogen storage properties can be improved by mechanically ball-milling the （NaH/Al） mixture together with Ti powder. H2 is a better ball-milling atmosphere than Ar, because a part of Nail is consumed during the ball-milling under an Ar of H2 atmosphere. As the Ti content increases, the hydrogen storage properties are enhanced gradually. In case x = 10, the reversible hydrogen absorption/desorption capacities of the composites milled for 6 h under the atmosphere reach 4.01% and 3.93% （ mass fraction）, respectively. The catalytic mechanism of the Tidoped NaH/Al composites system is discussed briefly.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第7期1360-1362,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:50471042)资助
关键词
络合氢化物
储氢性能
机械球磨
NaAlH4
TI
Complex hydrides
Hydrogen storage properties
Mechanically ball-milling
NaAIH4
Ti
