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

6 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

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Keywords

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

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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