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Chinese Science Bulletin

, Volume 57, Issue32, pp 41764180

First Online: 07 June 2012Received: 22 September 2011Accepted: 23 November 2011DOI: 10.1007-s11434-012-5248-2

Cite this article as: Feng, X., Shen, C., Fang, X.
et al.
Chin.
Sci.
Bull.
2012 57: 4176.
doi:10.1007-s11434-012-5248-2

Abstract

Li1xNi0.5Mn1.5O4 x=0.05, 0 spinel powders were synthesized using a solid-state reaction.
Their structures were characterized by X-ray diffraction, scanning electron microscopy and Raman spectroscopy.
Their electrochemical properties for use as active cathode materials in lithium-ion batteries were measured.
The LiNi0.5Mn1.5O4, Li1.05Ni0.5Mn1.5O4 and Li0.95Ni0.5Mn1.5O4 samples crystallized in Fd\\bar 3\m,Fd\\bar 3\m and P4332, respectively.
The LiNi0.5Mn1.5O4 and Li0.95Ni0.5Mn1.5O4 samples exhibited better cycle performance than the Li1.05Ni0.5Mn1.5O4 sample, while Li0.95Ni0.5Mn1.5O4 had the worst rate performance.
Thus, it appears unnecessary to introduce nominal lithium nonstoichiometry in LiNi0.5Mn1.5O4 electrode materials.

Keywordslithium nickel manganese oxidespace groupRaman spectroscopycyclic voltammetrycycle performancerate capabilityThis article is published with open access at Springerlink.com

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Autor: XuYongFeng - ChenShen - XinFang - ChunHuaChen

Fuente: https://link.springer.com/



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