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扫描电子显微镜（ＳＥＭ）观察和Ｘ一射线光电子能谱（ＸＰＳ）分析表明，贮氢电极在充、放电过程中合金颗粒的不断粉化和合金组成元素的表面偏析，导致贮氢电极放电容量随循环次数增加而逐渐减少（即导致贮氢电极失效）；而Ｃｏ、Ａｌ元素的加入可明显抑制粉化和偏析现象发生，其电极具有较好的循环充放电性能。
Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) analysis showed that the continuous pulverization of the alloy particles and the surface segregation of the alloy elements during the charge and discharge of the hydrogen storage electrode resulted in the decrease of the discharge capacity The number of cycles decreases gradually (that is, the hydrogen storage electrode fails). However, the addition of Co and Al significantly inhibits the occurrence of chalking and segregation, and the electrode has better cyclic charging and discharging performance.