Fig. 4From: Copper Nanoparticle-Incorporated Carbon Fibers as Free-Standing Anodes for Lithium-Ion BatteriesCyclic voltammograms of first 3 cycles of a Cu/CF-600, b Cu/CF-700, and c Cu/CF-800 samples. The cells cycled between 0.005 and 3 V vs. Li/Li+ at scan rate of 0.1 mV s−1. In the CV measurements, lithium metal acts as both counter and reference electrode in the two electrode configurationBack to article page