Fig. 7From: Environmental-Friendly and Facile Synthesis of Co3O4 Nanowires and Their Promising Application with Graphene in Lithium-Ion Batteries a Cyclic voltammograms of Co3O4NWs/df-GNS electrode at scan rate of 0.5 mV/s. b Electrochemical impedance spectra of Co3O4NPs/df-GNS and Co3O4NWs/df-GNS electrodes obtained by applying a sine wave with amplitude of 5.0 mV over the frequency range 100 kHz~0.1 HzBack to article page