Particle properties of LiMn2O4 fabricated by ultrasonic spray pyrolysis method

Keigo Matsuda, Izumi Taniguchi

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Spinel lithium manganese oxide powders were prepared directly by a continuous droplet-to-particle conversion process using an ultrasonic spray pyrolysis method. Nine kinds of precursor solutions were used to synthesize LiMn2O4 powders. The aqueous precursor solutions were made from various combinations of Li-salt, such as Li(HCOO) · H2O, Li(CH3COO) · 2 H20, Li(NO3), were Mn(HCOO)2·2 H20, Mn (CH3COO)2·4 H2O or Mn(NO3) · 6 H2O. The total concentration of metal ion is 0.54 mol/dm3. The particle properties of as-prepared LiMn204 powders were examined by X-ray diffraction (XRD), the Brunauer-Emmet-Teller (BET) method, transmission electron microscopy (TEM) and field emission scanning electron microscopy (FE-SEM). The chemical composition of the powders was determined by inductively coupled plasma spectroscopy (ICP). As the results, the powders were identified as single-phase spinel LiMn2O4, and the observed chemical compositions showed, good agreement with the stoichiometry one of LiMn2O4 for all samples. However, the particle morphology could be classified into four patterns depending on the original salts. The as-prepared particles were then used as cathode active materials for lithium-ion batteies and their charge/discharge properties were investigated. Their electrochemical properties in terms of cycle performance were also examined.

Original languageEnglish
Pages (from-to)232-237
Number of pages6
Journalkagaku kogaku ronbunshu
Volume29
Issue number2
DOIs
Publication statusPublished - 2003 Mar
Externally publishedYes

Keywords

  • Cathode material
  • LiMnO
  • Lithium ion battery
  • Particle property
  • Spray pyrolysis

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Fingerprint Dive into the research topics of 'Particle properties of LiMn<sub>2</sub>O<sub>4</sub> fabricated by ultrasonic spray pyrolysis method'. Together they form a unique fingerprint.

  • Cite this