贮氢合金多元合金化降钴研究  

Decrease of Co Content from Hydrogen Storage Alloys by Multi-alloying

作　　者：厉海艳[1] 李全安[1] 张清[1] 尹树峰[1] 张兴渊[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：《有色金属》2005年第4期16-17,共2页Nonferrous Metals

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]0129)

摘　　要：采用多元合金化的方法设计4种低钴稀土系贮氢合金,测定并分析其放电容量和循环稳定性。结果表明,稀土系贮氢合金的Co含量降到0.2%时,合金的放电容量有所下降,但是适当的添加Cu,Fe,Si,Cr,Sn元素,能得到较高的放电容量,并能有效的改善合金的循环稳定性。Four kinds of low-Co rear-earth hydrogen storage alloys used in Ni-MH batteries are designed by multi-alloying process, and their discharge capacity and cycle stability are tested and analyzed. The results show that the discharge capacity of rear-earth hydrogen storage alloys is somewhat decreased while the Co content is reduced to 0.2%, however, the discharge capacity can be increased and the cycle stability can be improved by multi-alloying with Cu, Fe, Si, Cr and Sn.

关 键 词：金属材料 低钴贮氢合金 多元合金化 放电容量 循环稳定性 

分 类 号：TG139.7[一般工业技术—材料科学与工程] TG146.16[金属学及工艺—合金]