贮氢合金多元合金化降钴研究

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

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.