Figure 6From: Synthesis and Characterization of Cobalt-Doped WS2 Nanorods for Lithium Battery ApplicationsTypical first and second charge/discharge curves of the Co-doped WS2 electrode (a), typical cycling performance of the precursor WS2 and the as-prepared Co-doped WS2 electrode (b) and coulombic efficiency versus cycle number of the raw and Co-doped WS2 (c). Current density: 50 mA g−1 Back to article page