Enhanced Performance of ZnO-Coated LiNi0.5Mn1.5 O4 Cathode Materials for Li-Ion Battery

Abstract:

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ZnO-coated LiNi0.5Mn1.5O4 cathode materials for Li-ion batteries have been synthesized. Samples were characterized by scanning electron microscopy (SEM), X-ray diffractometry (XRD) and charge-discharge tests. The results of XRD and scanning electron microscopy (SEM) showed the ZnO-coating was nano-sized, and the LiNi0.5Mn1.5O4 powder exhibits a typical cubic spinel structure with a space group of Fd3m. Electrochemical tests demonstrate that the ZnO-coated sample obtained possesses high capacity and excellent cycling stability compared with the as-prepared LiNi0.5Mn1.5O4. When being discharged at a rate of 1C after 50 cycles, the ZnO-coated LiNi0.5Mn1.5O4 powders can still deliver a capacity of 115.5 mAh•g-1, with nearly no capacity fading, which shows to be a potential cathode material for high-energy density power batteries.

Info:

Periodical:

Advanced Materials Research (Volumes 228-229)

Edited by:

Quanjie Gao

Pages:

514-518

DOI:

10.4028/www.scientific.net/AMR.228-229.514

Citation:

W. H. Zhang et al., "Enhanced Performance of ZnO-Coated LiNi0.5Mn1.5 O4 Cathode Materials for Li-Ion Battery", Advanced Materials Research, Vols. 228-229, pp. 514-518, 2011

Online since:

April 2011

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Price:

$35.00

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