| 非化学计量比贮氢合金及其电极特性 |
| |
| 引用本文： | 李全安,陈云贵,涂铭旌.非化学计量比贮氢合金及其电极特性[J].中山大学学报(自然科学版),2003,42(Z1):38-40. |
| |
| 作者姓名： | 李全安 陈云贵 涂铭旌 |
| |
| 作者单位： | 1. 河南科技大学材料科学与工程学院,河南,洛阳,471003
2. 四川大学金属材料系,四川,成都,610065 |
| |
| 摘 要： | 对贮氢合金MlNi3.55+xCo0.75Al0.3Mn0.4(0≤x≤0.6)的结构、组织、电化学性能和P-C-T特性进行了研究.结果表明,除了x=0.6的合金外,随着x的增大合金的点阵常数a值减小、c值增大,c/a值和单胞体积也随之增大,而x=0.6时合金体积反而减小.同时随着x的增大,合金中Ni并没有出现明显偏析,而是促进了B侧其它合金元素尤其是Mn和Al的偏析.x的增大,放电容量降低,充放电循环稳定性只略有下降,但活化性能却明显改善,P-C-T曲线平台压升高.
|
| 关 键 词： | 贮氢合金 金属氢化物电极 稀有金属 电化学性能 化学计量比 |
Non-stoichiometric Hydrogen Storage Alloys and Their Hydride Electrode Properties |
| |
| Abstract.Non-stoichiometric Hydrogen Storage Alloys and Their Hydride Electrode Properties[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2003,42(Z1):38-40. |
| |
| Authors: | Abstract |
| |
| Abstract: | The phase structures, electrochemical properties and PCT characteristics of MlNi3.55+xCo0.75Al0.3Mn0.4 (Ml=Lanthanum-rich Michmetal, 0≤x≤0.6) alloys have been investigated. The value of lattice constant a decreases, the value of lattice constant c and cell volume increase with the increasing value of x except for the alloy with x=0.6. Increasing value of x facilitates segregation of Mn, Al elements, but does not obviously affect segregation of Ni element. The plateau pressures of PCT curve increases, the discharge capacities and cycling stability decrease slightly, but the activity is greatly improved with the increasing value of x. |
| |
| Keywords: | hydrogen storage alloys metal hydride electrode rare earth metal electrochemical properties stoichiometry |
| 本文献已被 万方数据 等数据库收录！ |
|
