Fig. 2From: Preparation of PPy-Coated MnO2 Hybrid Micromaterials and Their Improved Cyclic Performance as Anode for Lithium-Ion BatteriesFT-IR spectra of (a) 30 μL PPy-coated urchin-like MnO2 sample and (b) 50 μL PPy-coated caddice-clew-like MnO2 sample and pure PPyBack to article page