图3.18为MnO2/PPy在不同电流密度下的恒电流充放电曲线。从图3

Figure 3.18 shows the constant current charge and discharge curves of MnO2/PPy at different current densities. From Figure 3.19(a), it can be seen that the constant current charge-discharge curve of MnO2/PPy has good symmetry and is an isosceles triangle, indicating that the composite material prepared by the miniemulsion method has good reversibility. Figure (b) The specific capacity of MnO2/PPy decreases with the increase of current density. This is because at high current density, the electrolyte ions do not have enough time to diffuse to the active area of ​​the electrode material, so that the active material cannot fully and effectively play a role , So the specific capacity is larger when charging and discharging with no small current.

Fig. 3.18 shows the constant current charge discharge curves of MnO2 / PPy under different current densities. It can be seen from Fig. 3.19 (a) that the constant current charge discharge curve of MnO2/PPy is symmetrical, showing an isosceles triangle, indicating that the composite prepared by miniemulsion method has good reversibility. Fig. (b) the specific capacity of MnO2 / PPy decreases with the increase of current density. This is because at high current density, the electrolyte ions do not have enough time to diffuse to the active area of electrode material, so the active material can not fully and effectively play its role. Therefore, the specific capacity is larger than that at low current.<br>

How can I love the heart, you're the one I love Figure 3.18 shows the constant current charge and discharge curves of MnO2/PPy under different current densities. It can be seen from fig. 3.19(a) that the constant current charge-discharge curve of MnO2/PPy is symmetrical and isosceles triangle, which indicates that the composite material prepared by miniemulsion method has good reversibility. Fig. (b) shows that the specific capacity of b)MnO2/PPy decreases with the increase of current density, because electrolyte ions do not have enough time to diffuse into the active region of electrode material under high current density, so that the active material cannot fully and effectively play its role, so the specific capacity is not as large as when charging and discharging at low current.