Hierarchically ordered mesoporous Co3O4 materials for high performance Li-ion batteries

Scientific Reports
Shijiao SunXiaodong Shen

Abstract

Highly ordered mesoporous Co3O4 materials have been prepared via a nanocasting route with three-dimensional KIT-6 and two-dimensional SBA-15 ordered mesoporous silicas as templates and Co(NO3)2 · 6H2O as precursor. Through changing the hydrothermal treating temperature of the silica template, ordered mesoporous Co3O4 materials with hierarchical structures have been developed. The larger pores around 10 nm provide an efficient transport for Li ions, while the smaller pores between 3-5 nm offer large electrochemically active areas. Electrochemical impedance analysis proves that the hierarchical structure contributes to a lower charge transfer resistance in the mesoporous Co3O4 electrode than the mono-sized structure. High reversible capacities around 1141 mAh g(-1) of the hierarchically mesoporous Co3O4 materials are obtained, implying their potential applications for high performance Li-ion batteries.

References

Jan 22, 2004·Journal of the American Chemical Society·Bozhi TianDongyuan Zhao
Nov 18, 2005·Chemical Communications : Chem Comm·Kun JiaoHeyong He
Apr 7, 2007·Physical Chemistry Chemical Physics : PCCP·Kuthanapillil M ShajuPeter G Bruce
Mar 14, 2008·Angewandte Chemie·Peter G BruceJean-Marie Tarascon
May 14, 2009·Chemistry : a European Journal·Fangming ZhanYijun Guo

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Citations

Mar 4, 2017·ACS Applied Materials & Interfaces·Mingjun JingZhaohui Hou
Aug 31, 2021·ACS Applied Materials & Interfaces·Yang LiJoel Henzie

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Methods Mentioned

BETA
X-ray
Transmission electron microscopy
electron diffraction

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