微型包覆处理稀土系贮氢合金电极的循环稳定性

将微型包覆处理的Ｍ１Ｎｉ３．４５（ＣｏＭｎＴｉ）１．５５贮氢合金充填入泡沫镍中制备电极，研究其充放电循环稳定性，结果表明，表面包覆处理可以提高循环稳定性，随着包覆层厚度的增加，循环稳定性提高，这可归因于早期循环阶段包覆层延缓了贮氢合金的粉化，提高了合金的有效利用率，长期循环中，减缓了贮氢合金表面的氧化腐蚀。

The Cycling Durability Durability of the Mischmetal Hydrogen Storage Alloy Electrode with Microencapsulation

The electrodes were made by filling a MINi_(3.45)(CoMNTi)_(1.55)hydrogen storage alloy microencapsulated with Ni-Pelectroless deposition into a porous Nickel and the charge-discharge cycling durability of the electrode was examined.The results have shown that the cycling durability of the electrode can be improved by the surface microencapsulation,and the thicker the encapsulated layer,the better the durability,This effects of surface microencapsulation are attributed to the enhacement of the utility efficence of hydrogen storage alloy through hampering the alloy from pulverization druign initial cycles and partialy prevening the alloy from oxidation and corrosion during long-term cycles.