Electrochemical properties of layered Li[Ni1/2Mn1/2]O2 cathode material synthesised by ultrasonic spray pyrolysis |
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| Authors: | SH Park YS Lee Y Sato Y-K Sun |
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| Affiliation: | (1) Department of Chemical Engineering, Hanyang University, Seoul, 133-791, South Korea;(2) High-Tech Research Center, Kanagawa University, Yokohama, 221-8686, Japan;(3) Department of Applied Chemistry, Kanagawa University, Yokohama, 221-8686, Japan |
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| Abstract: | Layered LiNi1/2Mn1/2]O2 was synthesized by an ultrasonic spray pyrolysis method. The LiNi1/2Mn1/2]O2 powder was characterized by means of X-ray diffraction, charge/discharge test, and cyclic voltammetry. The discharge capacity increases linearly with increase of the upper cut-off voltage limit and attains a high discharge capacity of 187 mA h g–1 between 2.8 and 4.6 V with excellent cyclability. A cyclic voltammetric study of the LiNi1/2Mn1/2]O2 electrode showed only one redox peak implying no structural phase change during cycling. |
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| Keywords: | cathode layered LiNi1/2Mn1/2O2 lithium manganese |
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