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Enhanced electrochemical performance of flower-like Co 3 O 4 as an anode material for high performance lithium-ion batteries

Publication Type : Journal Article

Thematic Areas : Nanosciences and Molecular Medicine

Publisher : Electrochimica Acta

Source : Electrochimica Acta, Volume 146, p.270 - 277 (2014)

Url : http://www.sciencedirect.com/science/article/pii/S0013468614017939

Keywords : Chemical co-precipitation

Campus : Kochi

School : Center for Nanosciences

Center : Nanosciences

Department : Nanosciences and Molecular Medicine

Year : 2014

Abstract : {ABSTRACT} A facile urea-assisted template-free, surfactant-less chemical co-precipitation method was used to obtain a flower-like cobalt oxide sample followed by annealing at various temperatures of 400, 500, and 600 °C for 2 h. The obtained flower-like morphology was assembled by nanorods, and the nanorods were comprised of interconnected particles with a porous structure. The changes in the surface area of the obtained flower-like Co3O4 samples were systematically examined at various temperatures and their impact on the electrochemical performances was observed. Electrochemical investigation showed that the flower-like Co3O4 samples obtained at 500 °C, showed excellent cycling stability (1536.9 mA h g−1 at 0.1 C up to 50 cycles and 1226.9 mA h g−1 at 0.5 C up to 350 cycles) and superior rate capability (845 mA h g−1 at 10 C). It is believed that the porous nature of the unique structure facilitates the penetration of the electrolyte at the electrode/electrolyte interface and provides a large space for strain buffering, which ultimately allows the present sample to achieve high rate performances.

Cite this Research Publication : J. Harsharaj S., Rai, A. Kumar, Young, L. Jae, Jaekook, K., and Chan-Jin, P., “Enhanced electrochemical performance of flower-like Co 3 O 4 as an anode material for high performance lithium-ion batteries”, Electrochimica Acta, vol. 146, pp. 270 - 277, 2014.

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