在物理改性的基础上，利用铋盐对电解二氧化锰进行化学改性，制得用于可充碱性锌锰电池正极的改性二氧化锰材料，并对其可逆性及充放电容量进行了研究和讨论。结果表明，这种材料制备的电极，不仅内阻小，而且有高的充放电容量和好的循环寿命。

Based on the physical modification, this paper discusses the chemical modification of electrolytic manganese dioxide with a bismuth salt. The rechargeability and capacity of the modified materials which was used as the positive active materials for rechargeable alkalline manganese battery have been studied. The results show that the electrode made from the modified materials have small internal impedance, high charge and discharge capacity and good cycle life.