| 利用球磨制备AB2-AB5复合贮氢合金及其电极性能和微观结构研究(英文) | |
| Electrode Characteristics and Microstructure of AB2-AB5 Composite Hydrogen Storage Alloy Formed by Ball-Milling Process | |
| 摘要: 为了改善Zr基AB2-型贮氢合金的电极性能，本文选择稀土基AB5型贮氢合金作为表面改性剂，将Zr0.9Ti0.1(Mn0.35Ni0.50V0.15)2(简称AB2)合金与稀土基AB5型合金(简称AB5)进行混合和球磨处理，制备了AB2-AB | |
| 关键词: 复合贮氢合金电极 球磨 表面改性 AB5型稀土基合金 | |
| 基金项目: | |
| Abstract: For improving the electrode characteristics of the Zr-based AB2-type alloy， a new kind of composite hydrogen storage alloy was successfully prepared by ball-milling Zr0.9Ti0.1(Ni0.50Mn0.35V0.15)2(represented as AB2) with a rare earth-based AB5-type alloy (represented as AB5) which worked as a surface modifier. Effects of ball-milling on the electrode characteristics and microstructure of Zr0.9Ti0.1(Ni0.50Mn0.35V0.15)2 alloy and mixtures of AB2 with AB5 alloy were investigated. After milling the mixed AB2 and AB5 powders (9∶1 in mass ratio) for 10min， XRD and SEM analysis showed that AB2 and AB5 maintained their original crystalline states， respectively， some AB5 particles were adhered onto the surface of AB2， and some fresh surfaces were formed. It was found that the activation cycles of AB2-AB5 composite alloy was shortened from 14 to 7 and the maximum discharge capacity was increased from 330mAh·g-1 to 347mAh·g-1 as compared with AB2 alloy. The discharge rate capability of AB2 alloy was also improved by ball milling AB2 with AB5 alloy process. The combined effect of ball-milling and mixing with AB5 alloy is superior to that of sole treatment. It was believed that AB5 alloy works not only as a regular hydrogen storage alloy， but also as a surface modifier to catalyze the hydriding/dehydriding process of AB2 alloy. | |
| Keywords: composite hydride electrode ball-milling surface modification AB5-type rare earth-based alloy | |
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| 韩树民,赵敏寿,吴耀明,郑炀曾.利用球磨制备AB2-AB5复合贮氢合金及其电极性能和微观结构研究(英文)[J].无机化学学报,2003,19(3):262-266. | |
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