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Highly porous disk-like shape of Co3O4 as an anode material for lithium ion batteries

Publication Type : Journal Article

Thematic Areas : Nanosciences and Molecular Medicine

Publisher : Journal of Solid State Electrochemistry

Source : Journal of Solid State Electrochemistry, Springer New York LLC, p.1-7 (2017)

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Keywords : Anode material for lithium ion batteries, Anodes, Characterization techniques, Cobalt, crystal structure, Electric batteries, Electrodes, Electrolytes, Hydrothermal, Ions, Lithium, Lithium alloys, Lithium compounds, Lithium ion insertion, Lithium-ion batteries, particle size, porosity, Porous, Secondary batteries, Structural damages, Structural feature, Theoretical capacity

Campus : Kochi

School : Center for Nanosciences

Center : Amrita Center for Nanosciences and Molecular Medicine Move, Nanosciences

Department : Nanosciences

Verified : Yes

Year : 2017

Abstract : A novel disk-like shape of Co3O4 with high porosity was synthesized by a facile hydrothermal approach followed by calcination at 485 °C for 2 h. In order to further confirm the crystal structure, morphology, particle size, surface area, and porosity of the sample, a series of corresponding characterization techniques were used. The disk-like shape of Co3O4 as an anode delivered excellent rate capability such as 510.5 mAh g−1 at 4.0 C, which is much higher than the theoretical capacity of commercial graphite anode (372 mAh g−1). However, the electrode could not recover the high capacity during the long-term cycling at various higher current rates due to the deformation of the structure as confirmed by the ex situ studies. It is believed that the obtained remarkable structural feature with numerous void pores within the structure may be helpful for short-term cycling due to the large contact areas between the electrode and the electrolyte and a shorter diffusion length for lithium ion insertion but unable to act as a buffer to relax the volume expansion/contraction and alleviate the structural damage of the electrode during long-term cycling. © 2017 Springer-Verlag Berlin Heidelberg.

Cite this Research Publication : D. S. Baji, Shantikumar V Nair, and Alok Kumar Rai, “Highly porous disk-like shape of Co3O4 as an anode material for lithium ion batteries”, Journal of Solid State Electrochemistry, pp. 1-7, 2017.

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