用HAc-NaAc缓冲溶液对AB_5型储氢合金表面改性的研究

Surface Modification of AB 5 type Hydrogen Storage Alloy with a HAc NaAc Buffer Solution

用ＨＡｃ－ＮａＡｃ缓冲溶液对ＡＢ５型储氢合金进行表面改性，通过ＸＲＤ、化学分析和恒电流充放电方法进行比较研究发现：这一方法没有改变合金的主体结构，但改变了合金表面层中的元素组成，这对于储氢合金的初期容量的提高有一定作用。

AB 5 type hydrogen storage alloy was modified with a HAc NaAc buffer solution.From XRD spectrum,chemical analysis and gavanostatic discharge experiments,we find that the bulk structure of the hydrogen storage alloy treated with the HAc NaAc solution is not changed,but the elemental composition of its surface layer is altered,so the treated alloy exhibits higher specific discharge capacity than that without treatment.