期刊
JOURNAL OF POWER SOURCES
卷 211, 期 -, 页码 12-18出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2012.02.029
关键词
Lithium-ion batteries; Layered cathode; First-principles calculations; Capacity
资金
- NASA-CANM [NNX08BA48A]
- NASA-EPSCoR [NNX08AB12A]
- Institute for Functional Nanomaterials (IFN)
- NASA [90641, NNX08BA48A] Funding Source: Federal RePORTER
First-principles calculations are used to analyze the phase stability, formation energy, and Li intercalation potential for a series of layered cathode materials. The calculations show LiNi0.66Co0.17Mn0.17O2 as a promising cathode for lithium-ion batteries. The layer-structured LiNi0.66Co0.17Mn0.17O2 is prepared via wet chemical route, followed by annealing at 1123 K and characterized using powder X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy. The characterization techniques reveal single-phase LiNi0.66Co0.17Mn0.17O2 with highly ordered structure. Galvanostatic charge-discharge curves recorded at 1C show the discharge capacity of ca. 167 mAh g(-1) and good cyclic performance for 25 cycles. (C) 2012 Elsevier B.V. All rights reserved.
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