Fig. 8From: Preparation of PPy-Coated MnO2 Hybrid Micromaterials and Their Improved Cyclic Performance as Anode for Lithium-Ion BatteriesNyquist plot of Li/MnO2 cells at open-circuit voltage. (a) caddice-clew-like MnO2 sample. (b) Urchin-like MnO2 sample. (c) 50 μL PPy-coated caddice-clew-like MnO2 sample. (d) 30 μL PPy-coated urchin-like MnO2 sampleBack to article page