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Lithium ion battery application of porous composite oxide microcubes prepared via metal-organic frameworks

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Huang,  Xing
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Yang, X., Tang, Y.-B., Huang, X., Xue, H. T., Kang, W. P., Li, W. Y., et al. (2015). Lithium ion battery application of porous composite oxide microcubes prepared via metal-organic frameworks. Journal of Power Sources, 284, 109-114. doi:10.1016/j.jpowsour.2015.02.155.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0027-9D46-9
Abstract
Prussian Blue (PB, Fe4[Fe(CN)6]3) is utilized to synthesize bimetallic metal-organic frameworks (MOFs) (Fe4[Fe(CN)6]3/Mx[Fe(CN)6], M = Cu, Ni, Co, etc.) by cation exchange, driven by differences in solubility product constant (Ksp) of monometallic MOFs. Upon decomposition, the bimetallic MOFs convert to porous composite metal oxides (Fe2O3/MOx, M = Cu, Ni, Co, etc.) while keeping the original cubic morphology. This study demonstrates a general approach for preparing bimetallic MOFs and porous composite oxides. We also demonstrate the good electrochemical performance (specific capacity of 774 mAh g−1 after 120 cycles at 500 mA g−1) of the synthesized porous Fe2O3–CuO composite as an anode material for lithium ion batteries. And according to references, this composite exhibit better or comparable rate capability and cycle stability compared with other hybrid transition metal oxides.