Synthesis and characterization of spinel LiMn2O4 for lithium secondary battery

Serk Won Jang, Heon Young Lee, Kun Chul Shin, Sung Man Lee, Jong Ki Lee, Seung Joo Lee, Hong Koo Baik, Dong Seok Rhee

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

The preparation and characterization of spinel LiMn2O4 have been studied. Spinel lithium manganese oxides are prepared by a sol-gel method using LiNO3 and Mn(CH3COO)2·4H2O as starting materials in which the obtained gel is heated at various temperatures after pretreatment at 350 °C or without pretreatment in air. The LiMn2O4 samples prepared with pretreatment have uniform microsized particles while those obtained without pretreatment have agglomerated particles of irregular shapes. The thermal pretreatment at 350 °C improves the electrochemical behaviour in terms of discharge capacity and rate capability. The results can be correlated with an increase in lithium surface reaction sites in these materials, as inferred by this small grain size and large surface area.

Original languageEnglish
Pages (from-to)274-277
Number of pages4
JournalJournal of Power Sources
Volume88
Issue number2
DOIs
Publication statusPublished - 2000 Jun

Bibliographical note

Funding Information:
This work was financially supported by the Korea Science and Engineering Foundations under contract No. 966-0300-006-2.

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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