Journal
JOURNAL OF POWER SOURCES
Volume 211, Issue -, Pages 202-207Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2012.03.049
Keywords
Lithium ferrous manganese phosphate; Aqueous rechargeable lithium battery; Electrochemical performance; Lithium-ion diffusion efficient
Funding
- Province Natural Science Foundation of Shaan Xi [2010JM6018]
- Xi'an Science and Technology plan project [CXY1124]
- Fundamental Research Funds for the Central University [0109-08143057]
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LiFe0.5Mn0.5PO4/C cathode materials are synthesized by a sol-gel method and the precursor calcinations. The phase structures and morphologies are characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). Galvanostatic charging/discharging cycles of as-prepared LiFe0.5Mn0.5PO4/C are performed in the saturated LiNO3 aqueous solution. The initial discharge capacities of (LiFe0.5Mn0.5PO4/C)//LiV3O8 aqueous rechargeable lithium battery are 123.09 mAh g(-1) and 107.00 mAh g(-1) at 0.05 C and 0.1 C, respectively. And it delivers a capacity of 66.77 mAh g(-1) at 50 C which is greater than that of 20 C and 30 C, exhibiting good cycling performance at 50 C. This is the first report of a successful utilization of LiFe0.5Mn0.5PO4/C as cathode material for ARLB and the lithium-ion diffusion coefficients of the LiFe0.5Mn0.5PO4/C are calculated from the cyclic voltammetry data. (C) 2012 Elsevier B.V. All rights reserved.
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