34.52
从表2可以看出:随着镉离子的加入,正极放电容量及利用率稍有变化,但考虑到数据变化 的规律性并不十分显著,因而镉离子的存在对正极放电容量的影响不明显。这种结果与前述SEM、XRD测试相对应,可能是镉离子对无定形二氧化铅的影响不明显,才使得电解液中的镉离子对正极容量不发生作用。
3 结论
a.溶液中加入镉离子,对铅阳极有活化作用。 b.溶液中的镉离子可能是以吸附作用影响硫酸铅晶体的生长。 c.二氧化铅的形貌及结构基本不受镉离子的影响,其正极放电容量几乎与镉离子无关。
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