取代元素对Mm-Ni基合金放电特性的影响  

The influence of element replacement on the discharge performance of Mm-Ni based hydrogen storage alloy

作　　者：刘宪伟[1] 戴春华[1] 张沛龙[1] 

机构地区：[1]北京有色金属研究总院稀土研究所

出　　处：《电源技术》1994年第3期14-18,共5页Chinese Journal of Power Sources

摘　　要：研究了Co,Mn,Al等取代元素对Mm-Ni基贮氢合金放电温度和速率特性的影响.结果表明,取代元素可提高Mm-Ni基合金氢化物的稳定性和较高温度下的放电性能,但它们对合金与氢反应的动力学特性有不同程度的损害.降低了合金在较低温度时的放电效率.使放电速率特性恶化.The influence of Co, Mn and Al as the replacement elements on the performance of Mm-Ni based hydrogen storage electrode alloys at different temperature and different discharging rate has been studied. It was showed that the replacement elements can stabilize the hydride formed by Mm-Ni based alloys and hydrogen, make the alloys have a wider range of temperature for discharging; but they are somewhat harmful to the dynamic characteristics of reaction between the alloys and hydrogen, reduce the discharging efficiency as temperature lowers, and make the performance deteriorate at high discharging rate.

关 键 词：放电速率特性 Mm-Ni基合金 

分 类 号：TM241[一般工业技术—材料科学与工程]