期刊
ELECTROCHIMICA ACTA
卷 52, 期 5, 页码 1919-1924出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2006.07.056
关键词
Li-ion battery; cathode material; LiNi0.5Mn1.5O4; electrochemical properties; spray drying and post-annealing
LiNi0.5Mn1.5O4 was prepared by a spray drying and post-annealing process. The re-annealing treatment in O-2 could not only decrease the Mn3+ content, but also increased the reversible capacity and significantly improve the rate capability compared to the untreated material. Moreover, the cyclic performance of the LiNi0.5Mn1.5O4 depends on both the cycling rate and operating temperature, which was ascribed to the difference between the phase transition rates between cubic I <-> cubic II and cubic II <-> cubic III. (c) 2006 Published by Elsevier Ltd.
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