Effects of synthesis condition on LiNi1/2Mn3/2O 4 cathode material for prepared by ultrasonic spray pyrolysis method

S. H. Park, S. W. Oh, S. T. Myung, Yun Chan Kang, Y. K. Sun

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

Synthesis of spinel LiNi1/2Mn3/2O4 powders was attempted for the first time via an ultrasonic spray pyrolysis method with different pH condition. After pyrolysis, the as-prepared particles with pH 7 condition have a dense spherical morphology without aggregation. The LiNi 1/2Mn3/2O4 powders were characterized by means of X-ray diffraction (XRD), scanning (SEM) and transmission electron microscope (TEM), and electrochemical testing. High crystalline LiNi1/2Mn 3/2O4 was synthesized over 900 °C showing well-developed octahedron particle shape. The discharge capacity of the synthesized material was delivered over 135 mA h g-1 between 3.5 and 5.0 V with high capacity retention of over 99% during 40 cycles. Consequently, it could be seen that the ultrasonic spray pyrolysis is effective synthetic method for 5 V spinel cathode materials.

Original languageEnglish
Pages (from-to)481-486
Number of pages6
JournalSolid State Ionics
Volume176
Issue number5-6
DOIs
Publication statusPublished - 2005 Feb 14
Externally publishedYes

Keywords

  • Chemical synthesis
  • Scanning and transmission electron microscopy
  • Ultrasonic

ASJC Scopus subject areas

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

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