A new strategy to diminish the 4 V voltage plateau of LiNi{sub 0.5}Mn{sub 1.5}O{sub 4}
Graphical abstract: The annealed sample LiNi{sub 0.5}Mn{sub 1.5}O{sub 4} cannot eliminate the 4-V voltage plateau completely. The Mg-doped compound LiNi{sub 0.5}Mn{sub 1.45}Mg{sub 0.05}O{sub 4} can effectively diminish the 4 V voltage plateau during charge and discharge process. - Highlights: • Mg-doped compound LiNi{sub 0.5}Mn{sub 1.45}Mg{sub 0.05}O{sub 4} was prepared. • The 4 V voltage plateau in the charge–discharge curves of LiNi{sub 0.5}Mn{sub 1.45}Mg{sub 0.05}O{sub 4} was diminished. • Compound LiNi{sub 0.5}Mn{sub 1.45}Mg{sub 0.05}O{sub 4} exhibited good electrochemical properties. - Abstract: As for spinel LiNi{sub 0.5}Mn{sub 1.5}O{sub 4}, there is 4 V voltage plateau in the charge–discharge profiles. This voltage plateau can be reduced by an annealing process, however it is hard to avoid it completely. In this study, a new strategy of partial substitution for Mn by Mg is applied. There is no 4 V voltage plateau in the charge–discharge profiles of Mg-doped compound LiNi{sub 0.5}Mn{sub 1.45}Mg{sub 0.05}O{sub 4}. This compound exhibits good electrochemical properties which can be used as cathode material of lithium ion batteries. At 1 C rate, it can deliver a capacity of around 129 mAh g{sup −1} and remain good cycle performance.
- OSTI ID:
- 22285233
- Journal Information:
- Materials Research Bulletin, Vol. 48, Issue 11; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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