Electrochemical properties of Co-less layered transition metal oxide as high energy cathode material for Li-ion batteries

Sungho Choo, Hye Yeon Kim, Dong Young Yoon, Wonchang Choi, Si Hyung Oh, Jeh Beck Ju, Jang Myoun Ko, Ho Jang, Won Il Cho

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

High energy nickel manganese cobalt oxide materials (HENMC) are one of the most viable cathode materials for a high energy density lithium ion battery (LIB), but they contain expensive and toxic cobalt (Co). We synthesized Co-free high energy nickel manganese oxide cathode materials (HENM) via a solid state reaction method and a coprecipitation method. Their structural and electrochemical properties were comparatively investigated using X-ray diffraction spectroscopy (XRD), scanning electron microscopy (SEM), inductively coupled plasma (ICP), electron probe micro-analysis (EPMA), particle size analysis (PSA) and electrochemical impedance spectroscopy (EIS). The co-precipitated HENM and the solid state fabricated HENM showed high capacities of 250 mAhg-1 and 240 mAhg-1, respectively. It suggests that the solid state fabricated method of HENM would be a good candidate for practical application as well as the co-precipitated one.

Original languageEnglish
Pages (from-to)905-910
Number of pages6
JournalKorean Journal of Chemical Engineering
Volume31
Issue number5
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

Cobalt
Electrochemical properties
Oxides
Transition metals
Cathodes
Nickel
Manganese oxide
Poisons
Inductively coupled plasma
Electron probe microanalysis
Manganese
Coprecipitation
Solid state reactions
Electrochemical impedance spectroscopy
Particle size analysis
Structural properties
Spectroscopy
X ray diffraction
Scanning electron microscopy
Lithium-ion batteries

Keywords

  • Cathode
  • Co-precipitation
  • High Capacity
  • Li Ion Battery
  • Nickel Manganese Oxide
  • Solid State Method

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Electrochemical properties of Co-less layered transition metal oxide as high energy cathode material for Li-ion batteries. / Choo, Sungho; Kim, Hye Yeon; Yoon, Dong Young; Choi, Wonchang; Oh, Si Hyung; Ju, Jeh Beck; Ko, Jang Myoun; Jang, Ho; Cho, Won Il.

In: Korean Journal of Chemical Engineering, Vol. 31, No. 5, 01.01.2014, p. 905-910.

Research output: Contribution to journalArticle

Choo, Sungho ; Kim, Hye Yeon ; Yoon, Dong Young ; Choi, Wonchang ; Oh, Si Hyung ; Ju, Jeh Beck ; Ko, Jang Myoun ; Jang, Ho ; Cho, Won Il. / Electrochemical properties of Co-less layered transition metal oxide as high energy cathode material for Li-ion batteries. In: Korean Journal of Chemical Engineering. 2014 ; Vol. 31, No. 5. pp. 905-910.
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