Figure 4From: MnO2 prepared by hydrothermal method and electrochemical performance as anode for lithium-ion batteryCharge-discharge specific capacity-voltage curves of MnO 2 anode materials in the potential range of 0.01 ~ 3.60 V at 0.2 C. (a) Caddice-clew-like and (b) urchin-like MnO2 samples.Back to article page