Abstract
Single-crystalline Co3O4 powders with controllable morphology have been prepared by using cobalt nitrate hexahydrate and alcohol precursors. From the reaction system, Co3O4 particles demonstrate the highly ordered mesoporous frameworks, hollow spheres shaped and the dramatic tetragonal dipyramid structure when synthesized by controlling the calcination temperature (350°C, 550°C, 750°C). The electrochemical performance of the mesoporous frameworks and hollow spheres Co3O4 as an anode material for lithium-ion batteries is evaluated. The mesoporous frameworks Co3O4 particles exhibit better rate capability than the hollow sphere Co3O4 particles. At the 50th cycle, the charge capacities of the framework structure and the hollow sphere Co3O4 particles are 813.9/652.1mAhg−1, respectively.
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