Particle properties of LiMn2O4 fabricated by ultrasonic spray pyrolysis method

Keigo Matsuda*, Izumi Taniguchi

*この研究の対応する著者

研究成果: Article査読

17 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)232-237
ページ数6
ジャーナルkagaku kogaku ronbunshu
29
2
DOI
出版ステータスPublished - 2003 3
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)

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