以空间储能电源4.5’镍极板为对象，研究了过充电、高倍率及极板孔径对电化学浸渍电极循环寿命的影响. 结果表明，5C过充电70%，电极初始容量为2.7Ah, 150次循环其容量逐渐下降，300次循环，其放电容量约为1.7Ah（保持率约63%）.5C无过充电，300次循环其容量保持率约100%，1000次循环，其容量仍保持率约76%.无过充电，极板孔径及小电流活化均可改善电极循环性能.

In this paper, the effects of overcharge, charge-discharge C rate and pore size on cycle lifetime of 4.5’ electrochemical impregnated nickel electrode were investigated. In the case of the electrode was overcharged to 170% of nominal capacity, the initial capacity of the electrode could be maintained 2.7 Ah up to 150 cycles without deterioration and a discharge capacity of 1.7 Ah (remaining 63% of 2.7 Ah ) could be delivered after 300 cycles. Without overcharge, more than 300 charge-discharge cycles could be realized without loss of capacity and a discharge capacity of electrode could be maintained about 76% of initial capacity even after 1000 cycles. The experimental results also showed that without overcharge the increase in pore size and activation with small current could improve the electrode cycle capability.