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

Hiroaki Uchiyama; Eiji Hosono; Haoshen Zhou; Hiroaki Imai

doi:10.1039/B900397E

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

Hiroaki Uchiyama,^a Eiji Hosono,^b Haoshen Zhou*^b and Hiroaki Imai*^a

* Corresponding authors

^a Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi, Kohoku, Yokohama, Japan
E-mail: hiroaki@applc.keio.ac.jp
Fax: +81 (0)45 566 1551
Tel: +81 (0)45 566 1556

^b Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Japan
E-mail: hs.zhou@aist.go.jp
Fax: + 81 (0)29 861 5799
Tel: + 81 (0)29 861 5795

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.

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Article information

DOI: https://doi.org/10.1039/B900397E
Article type: Paper
Submitted: 08 Jan 2009
Accepted: 06 Apr 2009
First published: 11 May 2009

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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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Journal of Materials Chemistry