CAJ | 학술논문

采用XRD、吸氢PCT曲线、吸氢动力学曲线、XPS和粒径分析等测试方法,研究LaNi4.25Al0.75合金的结构和储氢性能;推导LaNi4.2sAl0.75合金的四晶胞结构,分析LaN-25Al0.75合金的结构与性能的内在联系.结果表明:LaNi4.25 Al0.75 合金具有快速吸氢性能和较好的抗燃烧能力,其吸氢平台压和温度之间的函数关系式为lnpeq=-4 820/T+12.46,合金的吸氢速率随着温度的升高而降低.
채용XRD、흡경PCT곡선、흡경동역학곡선、XPS화립경분석등측시방법,연구LaNi4.25Al0.75합금적결구화저경성능;추도LaNi4.2sAl0.75합금적사정포결구,분석LaN-25Al0.75합금적결구여성능적내재련계.결과표명:LaNi4.25 Al0.75 합금구유쾌속흡경성능화교호적항연소능력,기흡경평태압화온도지간적함수관계식위lnpeq=-4 820/T+12.46,합금적흡경속솔수착온도적승고이강저.
Hydrogen storage properties of LaN4.25Al0.75 alloy were experimentally investigated by XRD,PC isotherm curves,hydrogen absorption kinetics curves,XPS and its particle diameter. The structure of unit cell of LaNi4.25Al0.75 alloy was deduced. The relationship between its structure and hydrogen storage performance of LaNi4.25Al0.75 alloy was analyzed. The results show that LaNi4.25Al0.75 alloy has rapid hydrogen absorption rate and good resistance to combustibility. It is also found that the function of the hydrogen absorption plateau pressure and temperature is ln peq=-4 820/T+12.46,and the hydrogen absorption rate of the alloy decreases with increasing the temperature.