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Sub-micrometer-sized LiMn1.5Ni0.5O4 spheres as high rate cathode materials for long-life lithium ion batteries

Authors Qian, Yunxian HKUST affiliated (currently or previously).
Deng, Yuanfu HKUST affiliated (currently or previously).
Shi, Zhicong HKUST affiliated (currently or previously).
Zhou, Yubo HKUST affiliated (currently or previously).
Zhuang, Quanchao
Chen, Guohua View this author's profile
Issue Date 2013
Source Electrochemistry Communications , v. 27, February 2013, p. 92-95
Summary Spinel LiMn1.5Ni0.5O4 (LMNO) sub-micrometer-sized spheres were prepared in one step using porous MnCO3 microspheres as a self-supporting template. The LMNO spheres were characterized by XRD, SEM and TEM. The obtained LMNO was in a well-crystallized cubic phase with little impurity. It showed high rate capability and excellent cycling stability as a cathode material for lithium ion batteries. Initial discharge capacities of 122.0, 120.3, 119.5 and 112.1 mAh g(-1) were found at 2, 3,5 and 10C respectively with 1C being 146.7 mA g(-1). Their capacity retentions are 92, 91, 82 and 79% respectively after 500 cycles. The as-prepared LMNO is a promising cathode material for high power and long-life lithium ion batteries. (C) 2012 Elsevier B.V. All rights reserved.
ISSN 1388-2481
Language English
Format Article
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