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

Authors
Choo, SunghoKim, Hye YeonYoon, Dong YoungChoi, WonchangOh, Si-HyungJu, Jeh BeckKo, Jang MyounJang, HoCho, Won Il
Issue Date
May-2014
Publisher
KOREAN INSTITUTE CHEMICAL ENGINEERS
Keywords
Li Ion Battery; High Capacity; Cathode; Nickel Manganese Oxide; Solid State Method; Co-precipitation
Citation
KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.31, no.5, pp.905 - 910
Journal Title
KOREAN JOURNAL OF CHEMICAL ENGINEERING
Volume
31
Number
5
Start Page
905
End Page
910
URI
https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/16700
DOI
10.1007/s11814-014-0046-y
ISSN
0256-1115
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.
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