Temperature of Formation Studies for LiMn1.5Ni0.5O4 Using X-Ray Diffraction

Abstract:

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The objective of this paper is to show that annealing lithiated transition metal oxide (LTMO) precursors obtained by the sol-gel method at insufficiently high temperatures may not produce the intended pure cathode active materials required in lithium batteries. In this work, LiMn1.5Ni0.5O4 which is a potential cathode active material in the 5 V-class is prepared by the solgel method. The precursor material was obtained when the solid gel was dried and heated at different temperatures in the range between 200 °C and 900 °C for 4 hours. It was observed that on heating the precursor material at least at 500 °C for 4 hours the material produced was LiMn1.5Ni0.5O4 in the present form as proven by the x-ray diffractogram (XRD). On heating at temperatures below this, the formation of LiMn1.5Ni0.5O4 was uncomplete and at temperatures above 500 °C the intensity of the peak at 2q = 18° decreases. The noise level also increased at temperatures above 500 °C.

Info:

Periodical:

Materials Science Forum (Volumes 480-481)

Edited by:

A. Méndez-Vilas

Pages:

77-80

DOI:

10.4028/www.scientific.net/MSF.480-481.77

Citation:

A. Mat et al., "Temperature of Formation Studies for LiMn1.5Ni0.5O4 Using X-Ray Diffraction", Materials Science Forum, Vols. 480-481, pp. 77-80, 2005

Online since:

March 2005

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$35.00

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