Size-tunable tavorite LiFe(PO4)(OH) microspheres with a core-shell structure

Min Young Cho, Young Soo Lim, Sun Min Park, Kwang Bum Kim, Kwang Chul Roh

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Core-shell structured tavorite LiFe(PO4)(OH) microspheres were synthesized by means of a simple solvothermal route. These particles have a mesoporous structure consisting of a shell made up of submicro-sized particles and a core of nano-sized particles. The size of the particles can be tuned within a range of 0.7 μm to more than 7 μm, with no hollowing observed despite the longer reaction times needed to create a sufficiently high density for use as a precursor of LiFePO4 in lithium-ion batteries. From the experimental data obtained, mechanisms for particle formation and crystal growth have been proposed based on the low dielectric constant of the reaction medium, the chemical potential difference induced by the adsorption of surfactants into the phosphate group, and the degree of supersaturation. In addition, the dependence of the electrochemical performance on the LiFe(PO4)(OH) particle size is investigated.

Original languageEnglish
Pages (from-to)6149-6154
Number of pages6
JournalCrystEngComm
Volume17
Issue number32
DOIs
Publication statusPublished - 2015 Aug 28

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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