Synthesis and electrochemical properties of Li[Ni0.4Co0.2Mn(0.4-x)Mgx]O2-yFy via a carbonate co-precipitation
- Authors
- Shin, Ho-Suk; Shin, Dongwook; Sun, Yang-Kook
- Issue Date
- Aug-2006
- Publisher
- ELSEVIER
- Keywords
- Layered cathode material; Carbonate co-precipitation; Spherical morphology; Thermal stability; Lithium secondary batteries
- Citation
- CURRENT APPLIED PHYSICS, v.6, pp.E12 - E16
- Indexed
- SCIE
SCOPUS
KCI
OTHER
- Journal Title
- CURRENT APPLIED PHYSICS
- Volume
- 6
- Start Page
- E12
- End Page
- E16
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/181161
- DOI
- 10.1016/j.cap.2006.01.001
- ISSN
- 1567-1739
- Abstract
- Magnesium doped transition metal-layered compounds, Li[Ni0.4Co0.2Mn(0.4-x)Mgx]O2-yFy (x = 0, 0.04, y = 0, 0.08) have been synthesized by a carbonate co-precipitation method. X-ray diffraction patterns revealed that this material has a typical layered structure with R (3) over barm space group. Spherical morphologies and mono-dispersed (approximately 15 mu m) powders were observed by scanning electron microscopy. Mg and F substitutions were effective for the improvement of physical properties. These improved physical characteristics enhanced the capacity retention and thermal stability, even though the electrodes were cycled between 2.8 and 4.6 V.
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