Fig. 2From: High-Yield Preparation and Electrochemical Properties of Few-Layer MoS2 Nanosheets by Exfoliating Natural Molybdenite Powders Directly via a Coupled Ultrasonication-Milling ProcessSEM images of a the pristine natural molybdenite powders and b, c the FL-MoS2 nanosheets obtained by centrifugation at 5000–8000 r.p.m (R pm = 1/2, C in = 45 g L−1, P u = 280 W, ω s = 2250 r.p.m, t ex = 4 h)Back to article page