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Issue 23, 2009
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Three-dimensional architectures of spinel-type LiMn2O4 prepared from biomimetic porous carbonates and their application to a cathode for lithium-ion batteries

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Abstract

We demonstrated nanostructural control of a functional material for electrochemical applications by using a biomimetic solution route. A nanoscopically ordered architecture of calcite-type MnCO3nanocrystals mimicking hierarchical structures of biological CaCO3 was successfully produced in an organic gel matrix. A highly porous structure of spinel-type LiMn2O4 was produced as a cathode material for lithium-ion batteries from the ordered MnCO3 architecture through nanocrystalline Mn2O3 as an intermediate phase. The rigid framework consisting of connected LiMn2O4nanoparticles provided high durability in a lithium insertion/extraction process at a high current density due to a high porosity for the electrochemical reaction and three-dimensional channels for ion diffusion.

Graphical abstract: Three-dimensional architectures of spinel-type LiMn2O4 prepared from biomimetic porous carbonates and their application to a cathode for lithium-ion batteries

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Publication details

The article was received on 08 Jan 2009, accepted on 06 Apr 2009 and first published on 11 May 2009


Article type: Paper
DOI: 10.1039/B900397E
Citation: J. Mater. Chem., 2009,19, 4012-4016
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    Three-dimensional architectures of spinel-type LiMn2O4 prepared from biomimetic porous carbonates and their application to a cathode for lithium-ion batteries

    H. Uchiyama, E. Hosono, H. Zhou and H. Imai, J. Mater. Chem., 2009, 19, 4012
    DOI: 10.1039/B900397E

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