欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
用铸造及快淬工艺制备了Mg2Ni型Mg20-xLaxNi10（x=0、2、4、6）贮氢合金。用XRD、SEM、HR-TEM分析了铸态及快淬态合金的微观结构,结果发现,在快淬无La合金中没有出现非晶相,但快淬含La合金显示了以非晶相为主的结构。用DSC研究了快淬合金的热稳定性,表明La含量及快淬对非晶相的晶化温度影响很小。应用Sieverts装置研究了铸态及快淬态合金的吸放氢动力学,发现铸态合金的吸放氢量及动力学随La含量的增加显著改善,且快淬显著地改善了（x=2）合金的吸放氢动力学。电化学测试的结果表明,铸态合金的放电容量随La含量的增加而增加,（x=2）合金的放电容量随淬速的增加而增加。La替代Mg显著地提高了铸态及快淬态合金的循环稳定性。
英文摘要：
Mg2Ni-type Mg20-xLaxNi10 （x=0,2,4,6） hydrogen storage alloys were prepared by casting and rapid quenching. The structures of the as-cast and quenched alloys were studied by XRD,SEM and HRTEM,founding that no amorphous phase forms in the as-quenched La-free alloy,but the as-quenched alloys containing La hold a major amorphous phase. Thermal stability of the as-quenched alloys is studied by DSC,showing that La content and the quenching rate induce a negligible influence on the crystallization temperature of the amorphous phase. The hydrogen absorption and desorption kinetics of the as-cast and quenched alloys are measured using an automatically controlled Sieverts apparatus,confirming that the hydrogen absorption and desorption capacities and the kinetics of the as-cast alloys are markedly ameliorated with increasing La content,and rapid quenching significantly improves the hydrogen absorption and desorption kinetics of the alloy （x=2）. The electrochemical measurement shows that the discharge capacity of the as-cast alloys grow with the increase of La content,and for the as-quenched alloy （x=2）,the discharge capacity increases with rising quenching rate. The substitution of La for Mg markedly enhances the cycle stability of the as-cast and quenched alloys.
同期刊论文项目
同项目期刊论文
Electrochemical hydrogen storage characteristics of nanocrystalline Mg20Ni10-xCux (x=0-4) alloys pre
Microstructure and hydrogen storage characteristics of melt-spun nanocrystalline Mg(20)Ni(10-x)Cu(x)
Hydrogen Storage Behaviours of Nanocrystalline and Amorphous Mg20-xLaxNi10(x=0-6) Hydrogen Storage A
Structures and electrochemical hydrogen storage behaviours of La0.75-xPrxMg0.25Ni3.2Co0.2Al0.1 (x=0-
Improved hydrogen storage behaviours of nanocrystalline and amorphous Mg(2)Ni-type alloy by Mn subst
Enhanced electrochemical characteristics of as-spun nanocrystalline and amorphous Mg(2)Ni-type alloy
Influences of Substitution of Zr for La on Structures and Electrochemical Performances of A(2)B(7)-T
Influence of rapid quenching on hydrogen storage characteristics of nanocrystalline Mg2Ni-type alloy
Investigation on electrochemical performances of melt-spun nanocrystalline and amorphous Mg(2)Ni(1-x
An electrochemical investigation of melt-spun nanocrystalline Mg20Ni10-xCux (x=0-4) electrode alloys
Hydrogenation and dehydrogenation behaviours of nanocrystalline Mg20Ni10-xCux (x=0-4) alloys prepare
Hydrogen storage behaviours of nanocrystalline and amorphous Mg20Ni10-xCox (x=0-4) alloys prepared b
Electrochemical hydrogen storage characteristics of nanocrystalline and amorphous Mg20Ni10-xCox (x=0
Hydriding and dehydriding characteristics of nanocrystalline and amorphous Mg20-xLaxNi10(x=0-6) allo
An electrochemical investigation of melt-spun nanocrystalline and amorphous Mg2Ni-type electrode all
Hydriding and dehydriding characteristics of nanocrystalline and amorphous Mg20Ni10-xCox (x=0-4) all
Investigation on the structures and electrochemical performances of La0.75-xZrxMg0.25Ni3.2Co0.2Al0.1
An investigation on the hydrogen storage characteristics of the melt-spun nanocrystalline and amorph
Structures and electrochemical cycle stability of La0.75-xPrx Mg0.25Ni3.2Co0.2Al0.1 (x=0-0.4) alloys
Effects of rapid quenching on the structures and electrochemical characteristics of the La0.5Ce0.2Mg
Structures and electrochemical hydrogen storage behaviours of La0.75-xPrxMg0.25Ni3.2Co 0.2A 0.1 (x =
Structures and electrochemical cycle stability of La0.75?xPrxMg0.25Ni3.2Co0.2Al0.1 (x = 0–0.4) alloy
Investigation on the structures and electrochemical performances of La0.75?xZrxMg0.25Ni3.2Co0.2Al0.1
Influence of the substituting Ni with Fe on the cycle stabilities of as-cast and as-quenched La0.7Mg
Influence of spark plasma sintering temperature on electrochemical performance of La0.80Mg0.20Ni3.75
Effect of cobalt content on electrochemical performance of La-Mg-Ni system (Ce2Ni7-type) electrode a
期刊信息
位置：