通过在镍氢电池Ni(OH)2正极中复合添加稀土氧化物Lu2O3和Er2O3,研究了稀土氧化物的复合添加对Ni(OH)2正极高温性能的影响.充放电循环实验表明复合添加不同含量的Lu2O3和Er2O3都能够不同程度地提高正极高温充电效率.在55,60,65 ℃下,添加2.5%Lu2O3+1.5%Er2O3的正极充电效率最高.循环伏安测试表明,复合添加2.5%Lu2O3+1.5%Er2O3能够较为明显的提高Ni(OH)2正极在高温环境下的析氧副反应电位,进而提高了电极在高温环境下的充电效率.
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