Layered (1-x-y)LiNi(1/2)Mn(1/2)O(2) [center dot] xLi[Li(1/3)Mn(2/3)] O(2) [center dot] yLiCoO(2) (0<=x = y<=0.3 and x+y=0.5) cathode materials

Zhang, L. Q., Takada, K., Ohta, N., Fukuda, K., Osada, M., Wang, L. Z., Sasaki, T. and Watanabe, M. (2005) Layered (1-x-y)LiNi(1/2)Mn(1/2)O(2) [center dot] xLi[Li(1/3)Mn(2/3)] O(2) [center dot] yLiCoO(2) (0<=x = y<=0.3 and x+y=0.5) cathode materials. Journal of Electrochemical Society, 152 1: A171-A178. doi:10.1149/1.1829416

Author Zhang, L. Q.
Takada, K.
Ohta, N.
Fukuda, K.
Osada, M.
Wang, L. Z.
Sasaki, T.
Watanabe, M.
Title Layered (1-x-y)LiNi(1/2)Mn(1/2)O(2) [center dot] xLi[Li(1/3)Mn(2/3)] O(2) [center dot] yLiCoO(2) (0<=x = y<=0.3 and x+y=0.5) cathode materials
Formatted title
Layered (1–π‘₯–𝑦)LiNi1/2Mn1/2O2·π‘₯Li[Li1/3Mn2/3] O2·π‘¦LiCoO2 (0≤π‘₯ = 𝑦≤0.3 and π‘₯+𝑦=0.5) cathode materials
Journal name Journal of Electrochemical Society   Check publisher's open access policy
ISSN 0013-4651
Publication date 2005
Year available 2004
Sub-type Article (original research)
DOI 10.1149/1.1829416
Volume 152
Issue 1
Start page A171
End page A178
Total pages 8
Place of publication Pennington, NJ, U.S.A.
Publisher Electrochemical Society
Language eng
Formatted abstract
An exploration of new cathode materials along the two lines having the nominal compositions of (1–π‘₯–𝑦)LiNi1/2Mn1/2O2·π‘₯Li[Li1/3Mn2/3]O2·π‘¦LiCoO2 (0≤π‘₯ = 𝑦≤0.3 and π‘₯ + 𝑦 = 0.5) was performed in the phase diagram of LiNi1/2Mn1/2O2–Li[Li1/3Mn2/3]O2–LiCoO2 by a simple solid-state reaction. XRD results identified that all materials are pure phases with layered structure, indicating good structural compatibility between three layered compounds, LiNi1/2Mn1/2O2, Li[Li1/3Mn2/3]O2, and LiCoO2. Li[Li1/3Mn2/3]O2 and LiCoO2 contents in these electrode materials presented important effects on structure and electrochemical properties. Our results demonstrated that the suitable structural integration of Li[Li1/3Mn2/3]O2 and LiCoO2 components into LiNi1/2Mn1/2O2 structure is a practicable way to prepare new electrode materials with the desired electrochemical performances even via a simple solid-state reaction. Among the materials investigated in this work, a reversible capacity of 180-200 mAh/g was obtained for the materials with 0.3≤π‘₯ + 𝑦≤0.6 and excellent cycling performance was observed with a large π‘₯ (π‘₯≥0.25) value in the series of π‘₯ + 𝑦 = 0.5.
Keyword Electrochemistry
Materials Science, Coatings & Films
Lithium-ion Batteries
Li-6 Mas Nmr
Insertion Material
Lini0.5mn0.5o2 Cathode
Secondary Batteries
Electrochemical Properties
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

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Created: Wed, 17 Oct 2007, 13:17:24 EST