Synthesis and Electrochemical Properties of HT-LiCo0.8Ni0.2O2 Prepared by Molten Salt Synthesis Method using 0.59LiNO3-0.41LiOH System

Chi Hwan Han, Young Sik Hong, Eun Ju Kang, Jee Sun Shin, Keon Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

LiCo0.8Ni0.2O2 powders were prepared by molten salt synthesis method using a 0.59LiNO3-0.41LiOH melt. The physico-chemical properties of the LiCo0.8Ni0.2O2 powders were investigated by powder X-ray diffraction method, field emission scanning electron microscopy, cyclic voltammetry, and charge-discharge cycling. Uniform size nanocrystalline powder (∼40 nm) could be obtained at temperature ranges of 280-480°C. These nanocrystalline powders showed poor electrochemical properties because of presence of the low temperature phase. Pure single-phase HT-LiCo0.8Ni0.2O2 powder could be obtained at 580°C. Charge-discharge measurements indicated that this exhibited a good capacity and cyclability without further heat treatment at higher temperatures.

Original languageEnglish
Pages (from-to)765-769
Number of pages5
JournalKorean Journal of Chemical Engineering
Volume18
Issue number5
Publication statusPublished - 2001 Sep 1

Fingerprint

Electrochemical properties
Powders
Nanocrystalline powders
Molten materials
Salts
Field emission
X ray powder diffraction
Temperature
Chemical properties
Cyclic voltammetry
Heat treatment
Scanning electron microscopy

Keywords

  • LiCoNiO
  • Lithium Battery
  • Molten Salt Synthesis

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Synthesis and Electrochemical Properties of HT-LiCo0.8Ni0.2O2 Prepared by Molten Salt Synthesis Method using 0.59LiNO3-0.41LiOH System. / Han, Chi Hwan; Hong, Young Sik; Kang, Eun Ju; Shin, Jee Sun; Kim, Keon.

In: Korean Journal of Chemical Engineering, Vol. 18, No. 5, 01.09.2001, p. 765-769.

Research output: Contribution to journalArticle

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AU - Shin, Jee Sun

AU - Kim, Keon

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AB - LiCo0.8Ni0.2O2 powders were prepared by molten salt synthesis method using a 0.59LiNO3-0.41LiOH melt. The physico-chemical properties of the LiCo0.8Ni0.2O2 powders were investigated by powder X-ray diffraction method, field emission scanning electron microscopy, cyclic voltammetry, and charge-discharge cycling. Uniform size nanocrystalline powder (∼40 nm) could be obtained at temperature ranges of 280-480°C. These nanocrystalline powders showed poor electrochemical properties because of presence of the low temperature phase. Pure single-phase HT-LiCo0.8Ni0.2O2 powder could be obtained at 580°C. Charge-discharge measurements indicated that this exhibited a good capacity and cyclability without further heat treatment at higher temperatures.

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