Three-dimensional architectures of spinel-type LiMn2O 4 prepared from biomimetic porous carbonates and their application to a cathode for lithium-ion batteries

Hiroaki Uchiyama, Eiji Hosono, Haoshen Zhou, Hiroaki Imai

Research output: Contribution to journalArticle

45 Citations (Scopus)

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 MnCO3 nanocrystals 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 LiMn2O4 nanoparticles 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.

Original languageEnglish
Pages (from-to)4012-4016
Number of pages5
JournalJournal of Materials Chemistry
Volume19
Issue number23
DOIs
Publication statusPublished - 2009

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Functional materials
Carbonates
Calcite
Biomimetics
Nanocrystals
Durability
Lithium
Cathodes
Current density
Gels
Porosity
Nanoparticles
Calcium Carbonate
Ions
Ion Channels
Lithium-ion batteries
spinell
lithium manganese oxide

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemistry(all)

Cite this

Three-dimensional architectures of spinel-type LiMn2O 4 prepared from biomimetic porous carbonates and their application to a cathode for lithium-ion batteries. / Uchiyama, Hiroaki; Hosono, Eiji; Zhou, Haoshen; Imai, Hiroaki.

In: Journal of Materials Chemistry, Vol. 19, No. 23, 2009, p. 4012-4016.

Research output: Contribution to journalArticle

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