Effect of surface treatment on the structure and high-rate dischargeability properties of AB5-type hydrogen storage alloy

被引：13
|
作者：
Zhang Peilong [1 ,2 ]
Wang Xiuli [3 ]
Tu Jiangping [3 ]
Chen Guoliang [1 ]
机构：
[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
[2] Hold Fortune Beijing Ind Co Ltd, Beijing 100083, Peoples R China
[3] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China
来源：
JOURNAL OF RARE EARTHS | 2009年 / 27卷 / 03期
关键词：
hydrogen storage alloys; surface treatment; electrochemical properties; high-rate dischargeability; rare earths; NI-MH BATTERIES; ELECTROCHEMICAL PROPERTIES; RARE-EARTH; ELECTRODE; MICROSTRUCTURE; TEMPERATURE; CAPACITY;
D O I：
10.1016/S1002-0721(08)60279-3
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Surface-treated MmNi(3.55)Co(0.75)Mn(0.4)Al(0.3) alloy as negative electrode material of nickel-metal hydride battery was employed to improve the high-rate dischargeability. Surface treatment was realized by dipping and stirring the alloy into a HCl aqueous solution with various concentrations at room temperature. The microstructure of the alloy before and after surface treatment was analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical properties before and after surface treatment were compared, and the alloy treated in 0.025 mol/L HCl solution showed the optimal high-rate dischargeability.
引用
收藏
页码：510 / 513
页数：4
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