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Porous Nanowired Co3O4 Anode Increasing Lithium Ion Battery Performance

Tuesday, 10 June 2014
Cernobbio Wing (Villa Erba)
L. Dong (College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, China), D. Li, L. Dong, M. Zhao, Y. Han, J. M. Feng, L. Dong (Tianjin Normal University), and X. Li (Center of Energy and Material , Tianjin Normal University)
Porous cobalt oxide (Co3O4) has been a promising anode material for lithium ion batteries because of its excellent redox activity, high specific capacity, and relatively low cost. In this study, porous nanowired Co3O4 was successfully synthesized on the 3D porous nickel foam substrate using a facile hydrothermal approach. The porous nanowired structure of Co3O4 was demonstrated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and the anode phase structure was confirmed by X-ray diffraction (XRD). During charge/discharge processes, cyclic voltammetry (CV) was performed to investigate electrochemical reaction of Co3O4 with lithium. As expected, the proposed porous nanowired anode obtained good cyclic performance and rate capability under galvanostatic charge/discharge test. Our results demonstrated that this anode design could effectively improve Co3O4 anode performance resulting from the special porous nanostructure and the high contact area of the anode with electrolyte.