Synthesis of LiFePO4 powder by the organic-inorganic steric entrapment method

Daniel Ribero, Waltraud M. Kriven

Research output: Contribution to journalArticle

Abstract

A nanoscale and pure, olivine-structured LiFePO4 was synthesized at ∼300 °C using an organic-inorganic steric entrapment method. Normally, when calcined and crystallized in air, this method leads to the synthesis of compounds where the cations are in their highest oxidation state. However, in this study, we found a way to produce compounds having lower oxidation states (e.g., compounds containing Fe2+), which may have wider applications in the synthesis of other compounds with complex chemistry that have variable oxidation states and, therefore, potential applications in electronic ceramics. The resulting LiFePO4 or (Li2O·2FeO·P2O5) was characterized by thermogravimetric analysis/differential thermal analysis, x-ray diffractometry, scanning electron microscopy, transmission electron microscopy, inductively coupled plasma emission spectroscopy, specific surface area by Brunauer-Emmett-Teller nitrogen absorption, and particle size analysis.

Original languageEnglish (US)
Pages (from-to)2133-2143
Number of pages11
JournalJournal of Materials Research
Volume30
Issue number14
DOIs
StatePublished - Jun 30 2015

Keywords

  • combustion synthesis
  • nanostructure
  • oxides
  • particulates
  • powder processing

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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