Al添加对LiBH_4可逆吸放氢性能影响的研究  

Effects of Al Adding on the Reversible Hydrogen Properties in LiBH_4/Al System

作　　者：夏广林[1,2] 余学斌[1,2] 吴铸[1] 

机构地区：[1]中科院上海微系统与信息技术研究所,上海200050 [2]复旦大学,上海200433

出　　处：《稀有金属材料与工程》2009年第9期1618-1621,共4页Rare Metal Materials and Engineering

基　　金：上海市重点学科建设项目(B113);国家'863'项目(2007AA05Z107);上海市启明星项目(05QMX1463)资助

摘　　要：研究了Al对LiBH4吸放氢性能的影响。结果表明,Al的添加可使LiBH4起始放氢温度降低至300℃左右,且主要放氢过程的温度范围随着Al含量的增加而逐渐降低;可逆性研究表明,放氢后的LiBH4/Al混合体系在600℃、10MPa条件下实现可逆吸氢,这明显低于单一LiBH4的可逆吸氢条件。LiBH4/Al吸放氢性能改善的原因是由于化合物LiAl和AlB2的生成。The effect of AI addition on the hydrogen storage performance of LiBH4 was investigated. It is indicated that the onset dehydrogenation temperature of LiBH4/Al mixture is decreased to about 300℃. The main hydrogen release shifts to low temperature with the increase of Al content. Furthermore, the dehydrogenated LiBH4/Al sample can be rehydrogenated at 600 ℃ and 10 MPa, significantly lower than that of the plan LiBH4. The improvement of hydrogen storage properties in LiBH4/Al system is due to the formation of LiAl and AlB2 compounds during the dehydrogenation.

关 键 词：金属氢化物 AL LiBH4 储氢材料 

分 类 号：TG139.7[一般工业技术—材料科学与工程]