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Enhanced Rate Performance of Carbon Nanotube-Coated LiNi0.45Al0.05Mn1.5O4 Cathode Material

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6 Author(s)
Lu, Y. ; Dept. of Phys., Fujian Normal Univ., Fuzhou, China ; Lin, Y.B. ; Zhao, G.Y. ; Chen, W.
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Carbon nanotubes (CNTs) has been coated on the surface of LiNi0.45Al0.05Mn1.5O4 cathode material and the effect of carbon nanotube coating on the electrochemical performances is investigated through the characterization of X-ray diffraction (XRD), cyclic voltammetry (CV), galvanostatic charge-discharge test and electrochemical impedance spectroscopy (EIS), respectively. The results reveal that the CNTs-coating would remarkably enhance the discharge capacity and rate capability, especially at high rate. The improvement of high-rate performance via carbon nanotube coating might be due to the faster kinetic of both the Li-ion diffusion and the charge transfer reaction.

Published in:

Power and Energy Engineering Conference (APPEEC), 2012 Asia-Pacific

Date of Conference:

27-29 March 2012