从图中可以看出，在不同电流密度下，MnO2/PPy复合材料的比容量随着

从图中可以看出，在不同电流密度下，MnO2/PPy复合材料的比容量随着转子转速的增加而增大，转速超过4×2800 r min-1时，比容量都开始减小。这是由于转子转速的增加导致高速分散器内离心力与切切力的增强，可以强化油水两相的湍动程度，减小形成的液滴的尺寸。细乳液液滴尺寸的降低有利于形成粒径较小的晶核，使得颗粒比表面积的增大，有利于传质过程的进行，即氧化剂KMnO4能快速补充扩散到液滴内与吡咯单体发生氧化还原反应。但是，转子转速的进一步增加，细乳液的湍动程度也会随之增大，小液滴之间碰撞机率增加的同时也使得晶核间的碰撞机率增大，产物粒径增大，比表面积降低，比容量随之下降。

It can be seen from the figure that under different current densities, the specific capacity of MnO2 / PPy composite increases with the increase of rotor speed, which exceeds 4 × At 2800 r min-1, the specific capacity began to decrease. This is because the increase of rotor speed leads to the increase of centrifugal force and shear force in the high-speed disperser, which can strengthen the turbulence degree of oil-water two-phase and reduce the size of droplets. The decrease of the droplet size of the miniemulsion is beneficial to the formation of smaller crystal nuclei and the increase of the specific surface area of particles, which is conducive to the mass transfer process, that is, oxidant KMnO4 can rapidly add to the droplet and reacts with pyrrole monomer. However, with the further increase of rotor speed, the turbulence degree of miniemulsion will also increase, and the collision probability between small droplets will increase. Meanwhile, the collision probability between nuclei will increase, the product size will increase, the specific surface area will decrease, and the specific capacity will decrease.<br>

It can be seen from the figure that under different current densities, the specific capacity of MnO2/PPy composites increases with the increase of rotor speed, and decreases when the rotor speed exceeds 4×2800 r min-1. This is because the centrifugal force and shear force in the high-speed disperser increase with the increase of rotor speed, which can strengthen the turbulent degree of oil-water two-phase and reduce the size of droplets. The reduction of droplet size of miniemulsion is beneficial to the formation of crystal nucleus with smaller particle size, and the increase of specific surface area of particles is beneficial to the mass transfer process, that is, the oxidant KMnO4 can quickly supplement and diffuse into the droplets to undergo redox reaction with pyrrole monomer. However, with the further increase of rotor speed, the turbulence degree of miniemulsion will also increase, and the collision probability between small droplets will also increase, resulting in the increase of particle size, specific surface area and specific capacity of the product.