本工作采用阴—阳极双向恒电位极化法,对电池级二氧化锰的活性进行了测定,发现阳极区存在一种作者称之为“特征电流”的曲线平阶,其数值大小与被测材料的活性有关并根据粉状多孔电极结构和离子在固体中扩散的理论,对这种“特征电流”进行了理论性的探讨。 In this work, the cathode-anode bi-directional potentiostatic polarization method was used to measure the activity of battery-level manganese dioxide. It was found that there was a curve flattened by the authors called “characteristic current” in the anode region. Material activity and based on the theory of powder porous electrode structure and the diffusion of ions in the solid, this “characteristic current” is theoretically discussed.