快淬对低钴贮氢合金的电化学性能影响  

Effect of Rapid Quenching on the Electrochemical Properties of Low-cobalt Hydrogen Storage Alloy

作　　者：李守英[1] 李全安[1] 李克杰[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《铸造技术》2006年第7期711-714,共4页Foundry Technology

基　　金：河南省杰出青年科学基金(0312000200);河南省高校创新人才培养基金(豫高教[2002]129)

摘　　要：为改善低钴贮氢合金的综合电化学性能,对其进行不同速度的快淬处理。结果表明,合适的快淬速度不仅可以大幅度的提高放电容量,而且明显的改善合金的循环稳定性和放电电压特性。18 m/s快淬低钴合金具有较好的综合电化学性能,但快淬使合金的活化性能有所降低。利用X射线、扫描电镜对铸态及快淬合金进行微观分析。分析了快淬对低钴贮氢合金电化学性能的影响机理。Different rapid quenching rate was used in the preparation of low-Co AB5 hydrogen storage alloys in order to improve its electrochemical properties. The results show that proper quenching not only increase discharge capacity greatly but also can improve cycle stability and discharge voltage property. The experimental results show that the alloy at rapid quenching rate 18 m/s can get better electrochemical properties, but the rapid quenching reduce active property of the alloy slightly. Microstructures of as-cast and quenched alloys were analyzed by XRD and SEM, and the effect of rapid quenching on the electrochemical properties oft hydrogen storage alloy with low cobalt was discussed,

关 键 词：低钴贮氢合金 快淬 MH/NI电池 

分 类 号：TG139.7[一般工业技术—材料科学与工程]