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Effect of rapid quenching on the microstructure and electrochemical characteristics of La_(0.6)Ce_(0.4)Ni_(3.6)Co_(0.65)Mn_(0.4)Al_(0.2)Ti_(0.05_(FeB)_(0.1) hydrogen storage alloy

查看全文 作　　者：ZHANG [1,2]Peilong;SONG [1]Xiping;WANG [3]Xiuli;PEI [1]Pei;LUO [2]Guiping;TU [3]Jiangping;CHEN [1]Guoliang 高影响力作者 机构地区：[1]State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beijing 000,China;[2]Whole Win(Beijing) Materials Sci.& Tech.Co.,Ltd.,Beijing 100083,China;[3]Department of Materials Science and Engineering,Zhejiang University,Hangzhou 310027,China高影响力机构 出　　处：《Rare Metals》索引2010年第29卷第6期,共4页高影响力期刊 基　　金：supported by the National High-Tech Research and Development Program of China (No.2006AA11A159) 摘　　要：In order to improve the cycling stability of AB5 type alloy electrodes,rapid quenching technology and new alloy composition design were employed.A hydrogen storage alloy with nominal composition La0.6Ce0.4Ni3.6Co0.65Mn0.4Al0.2Ti0.05(FeB)0.1 was prepared by vacuum magnetic levitation melting under high purity argon atmosphere,followed by rapid quenching at different cooling rates.XRD results show that all alloys exhibit the single-phase CaCu5-type structure.Electrochemical tests indicate that rapid quenching can slightly improve the cycling life of the alloy.Nevertheless,the high-rate dischargeability of the quenched alloys is lower than that of the as-cast alloy. 关 键 词：贮氢合金 微观结构 电化学特性 快淬 高倍率放电性能 淬火工艺 循环稳定性 电化学测试
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