Synthesis and Lithium Storage Properties of Novel Flower-like Co3O4

Wednesday, 8 October 2014
Expo Center, 1st Floor, Center and Right Foyers (Moon Palace Resort)
P. Liu (School of Chemical Engineering, Nanjing University of Science and Technology), X. Xia, W. Wang, and Q. Hao (Key Laboratory for Soft Chemistry and Functional Materials , Ministry of Education, Nanjing University of Science and Technology)

    Cobalt oxide, Co3O4, one of the most important metal oxides and p-type semiconductor, has been found wide spread applications in many important fields, including solar cell photo-catalysts and supercapacitors or lithium-ion batteries. Usually, properties of the material depends on its special morphology. Different morphologies of cobalt oxide such as cubes, sheets, wires and tubes have been synthesized[1][2].

    In this work, a novel flower-like Co3O4 has been produced by calcining the precursor, which was obtained through a simple hydrothemal method. The unique hierarchical architecture is able to shorten Li+diffusion paths and accommodate the volume change of the materials during charge/discharge process. Electrochemical evaluation demonstrates its potential application as anode material for lithium ion batteries. Fig. 1 shows the cycle life of cobalt oxide, the inserted picture a and b are the TEM images of precusor and cobalt oxide, respectively.


[1] Lou X W, Deng D, Lee J Y, et al. Advanced Materials, 2008, 20(2): 258-262.

[2] Tian L, Zou H, Fu J, et al. Advanced Functional Materials, 2010, 20(4): 617-623.