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

页码：510 / 513

页数：4

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