Effects of Mn content on microstructure and electrochemical properties of LaNi4.2-xCo0.6MnxAl0.2 (x=0-0.2)hydrogen storage alloys

摘要：

The effects of Mn content on microstructure and electrochemical properties of LaNi4.2-xCo0.6MnxAl0.2 alloys were investigated systematically.The results of XRD analyses indicate that the substitution of Mn does not change the crystal structure,but along with the increase of Mn substitution quantity,the volume of the crystal increases and the ratio of axial to radial lattice parameters (a/c) first increases,then decreases.With the increase of Mn substitution quantity in LaNi4.2-xCo0.6Mnx Al0.2,the discharge capacity,charge efficiency,the self-discharge and high rate discharge capacity increase first and then decrease.The discharge capacity reaches the highest value of 367 mA·h/g (x=0.1) at 0.2C.

关键词： hydrogen storage alloys crystal structure electrochemical properties Mn substitution

作者: JIAO Yong-han CHENG Yan ZHU Lei CHEN Hui JIAN Xu-yu WANG Zhong

作者单位: General Research Institute for Nonferrous Metals,Beijing 100088,China

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）