摘要
针对两种新型稀土型储氢合金La0.5Y0.5Ni4.8Mn0.1Al0.1和La0.5Y0.5Ni4.8Al0.2的储氢特性进行研究分析。实验表明,相同温度下,La0.5Y0.5Ni4.8Mn0.1Al0.1和La0.5Y0.5Ni4.8Al0.2合金的PCT曲线基本重合,且都具有优良的吸氢动力学性能;相比之下,后者的滞后系数要小于前者,吸氢量较大,吸氢速率也较快,故其储氢性能较优。300次吸放氢循环实验结果表明,La0.5Y0.5Ni4.8Al0.2合金的吸氢动力学性能虽然略有下降,但抗粉化性能较好。
Hydrogen storage properties of two alloys of La0.5Y0.5Ni4.8Mn0.1Al0.1 and La0.5Y0.5Ni4.8Al0.2 were systematically investigated. Experimental results showed that the pressure-content isothermal curves of both alloys were almost the same. But the hysteresis coefficient of La0.5Y0.5Ni4.8Al0.2 alloy was lower, resulting in greater hydrogen storage capacity and faster absorption kinetics. It was also found that although the kinetics characteristic of La0.5Y0.5Ni4.8Al0.2 alloy has weakened after 300 absorption/desorption cycles, it was still keeping on a good storage properties and a nice pulverization resistance.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2011年第14期65-67,共3页
Materials Reports
基金
国家863计划(2006AA05Z135)
国家自然科学基金(50776094)
关键词
储氢合金
压力-成分曲线
吸氢动力学
抗粉化特性
metal hydride, pressure-composition isotherms, hydrogen absorption kinetics, pulverization resistant capability
