贮氢合金Ml(NiCoMnAl)_5中Ce和Nd对MH-Ni电池性能的影响  

The effect of Ce and Nd content in the Ml (Ni Co Mn Al)_5 alloy on the performance of Ni-MH battery

作　　者：郭靖洪 燕萍 庞柳萍 唐丽新 张建海 夏春明 段秋生 刘国忠 

机构地区：[1]中辽三普电池〈沈阳〉有限公司,辽宁沈阳110015

出　　处：《电源技术》2000年第5期265-266,287,共3页Chinese Journal of Power Sources

摘　　要：研究了贮氢合金Ml(NiCoMnAl) 5 中Ce和Nd含量的变化对MH Ni电池性能的影响。试验结果表明随着合金中Nd含量的增加和Ce含量的降低 ,MH电极放电容量逐渐提高 ,当Nd含量大于 1 5 %时 ,MH电极放电容量下降趋势增大。另外试验还发现随着合金中Ce含量的增加和Nd含量的降低 ,提高了MH Ni电池高倍率放电能力 ,但降低了电池荷电保持能力。贮氢合金中Ce和Nd含量的增加都可改善MHThe effects of Ce and Nd contents in the Ml(NiCoMnAl) 5 alloy on the performance of Ni-MH battery was studied. The test results show that the discharge capacity of MH electrode increased with the increase of Nd content and the decrease of Ce content. When Nd content was more than 15%(mass percentage), the discharge capacity of MH electrode went down faster. On the other hand, it was found that the high rate dischargeability of Ni-MH battery rose with the increase of Ce content and the decrease of Nd content, while its charge retention ability dropped. The increase of Ce and Nd contents in hydrogen storage alloy improves the cycle life of Ni-MH battery.

关 键 词：贮氢合金 MH电极 放电容量 MH-NI电池 循环寿命 

分 类 号：TM912.203[电气工程—电力电子与电力传动] TM241[一般工业技术—材料科学与工程]