高性能泡沫镍电极的研究  

Study on high performance foamed nickel electrodes

作　　者：谢德明 刘昭林[1] 

机构地区：[1]中山森莱公司,天津大学应用化学系

出　　处：《电源技术》1998年第2期51-52,78,共3页Chinese Journal of Power Sources

摘　　要：研究了ＨＰＭＣ、ＣｏＯ，ＺｎＯ含量对泡沫镍电极性能的影响。结果表明，在镍正极中加入ＣｏＯ可以大幅度提高Ｎｉ－（ＯＨ）２利甲率，但电极只含ＣｏＯ不能有效抑制膨胀，同时添加ＣｏＯ、ＺｎＯ可以大幅度提高电极寿命。此外，少量ＺｎＯ的加入对Ｎｉ（ＯＨ）２利用率影响较小。在本论文的实领条件下，制造高性能泡沫镍电极的合适工艺为：ＨＰＭＣ、ＣｏＯ、ＺｎＯ掺入量分别为０．５％、９％、４．５％。制尾的ＭＨ－Ｎｉ电池的容量在１３００ｍＡｈ以上，１Ｃ循环寿命在３００次以上，０．２Ｃ放电１．２Ｖ以上时间占总的８０％以上，１Ｃ放电１．２Ｖ以上时间占总的６０％以上。The influence of CoO , ZnO , HPMC on the performance of the foamed Ni (OH)2 electrodes was discussed. The results showed that , the addition of CoO can extremly increase the utilization of Ni (OH )2 , while the addition of ZnO with low content has little effect. The coaddition of CoO and ZnO leads to the long cycle life of Ni (OH)2 electrodes. The high performance Ni (OH)2 electrode was prepared with the opti- mized formulation , 100%Ni(OH)2+9 %CoO+4. 5%ZnO+0. 5 %HPMC. The performances of AA size Ni- MH batteries assemhled with these electrodes as positive were observed. Their capacity are more than 1300 mAh ,the efficient capacity with the out put voltage above 1. 2V is larger than 80% of the total time at 0. 2C rate , more than 60%. at 1C rate , and capacity decay less than 10 %. after 300 cycles at 1C rate , 1 00% DOD .

关 键 词：电池 正极 HPMC 电极 镍电极 蓄电池 

分 类 号：TM241.051[一般工业技术—材料科学与工程] TM912.03[电气工程—电工理论与新技术]