贮氢合金表面处理改善吸放氢性能研究  

Research of Properties for Hydrogen Storage Alloy Improved by Surface Treatment

作　　者：桑革[1] 沈崇雨[1] 张义涛[1] 曹伟[1] 涂铭旌[1] 孙颖[1] 郑振华[1] 叶小球[1] 

机构地区：[1]中国工程物理研究院,四川绵阳621900

出　　处：《稀有金属》2006年第z2期31-34,共4页Chinese Journal of Rare Metals

基　　金：中国工程物理研究院基金(20020865)资助项目

摘　　要：研究表面改性对La系合金贮氢性能的影响,采用化学镀的方法,对LaNi5和LaNi4.7Al0.3合金进行了镀Pd的表面处理实验。在p-C-T测试系统上研究了镀Pd前后,LaNi5和LaNi4.7Al0.3合金的抗CO毒化性能,进行了动力学性能测试、循环次数测试等。实验结果表明,化学镀Pd后的贮氢合金与未镀Pd的合金相比,吸氢性能得到改善,表现为:平台区域相对变平,吸氢孕育期缩短、循环次数增加,抗CO毒化性能提高。Surface modification on the La-based hydrogen storage alloys was studied.LaNi5,LaNi(4.7)Al(0.3) were plated with Pd by chemistry method.The anti-poisoned property to CO,hydrogen sorption kinetics and cycling performance were investigated through the p-C-T measurement device before and after Pd-plated.The results show that the hydrogen sorption properties of La-based hydrogen storage alloy are improved by surface treated.The plateau gets planter and longer;the induction gets shorter and the circling times increase.

关 键 词：贮氢合金 毒化 表面处理 吸放氢特性 宏观特性 

分 类 号：TG139.7[一般工业技术—材料科学与工程]