Abstract
ABSTRACT Regulating the components of anodic materials is an effective strategy for improving their Li-storage performances. Such component control can permit defined electrochemical performances. TiO2 shows good discharge capability at high current density, and it has been applied to modify the electrochemical property of Co3O4/C. In the composite Co3O4/C/TiO2, TiO2 nanoparticles are mainly coated on the surface of Co3O4 micro-particles, and C acts as a conductive bridge. With the assistance of TiO2, the formed heterointerface or pseudocapacitance gives rise to an improved discharge capacity of Co3O4/C/TiO2 at a current density of 2000 mA g−1 without a discharge plateau. the cyclic voltammograms curves and discharge curves show apparent changes after the application of TiO2. The morphologies of the electrode and the active materials change with an increasing number cycles. Nevertheless, the discharge capacity remains stable. This finding indicates that controlling the amount of the active component is effective in improving the Li-storage performance .
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