Journal
JOURNAL OF POWER SOURCES
Volume 240, Issue -, Pages 50-53Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2013.03.175
Keywords
Li solid electrolyte; NASICON; Li-ion battery; Ionic conductivity
Funding
- National Natural Science Foundation of China [50921061, 51221291]
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The NASICON oxides with general formula Li1-xYxZr2-x(PO4)(3) (0.1 <= x <= 0.2) are prepared by conventional solid-state reaction. The samples are characterized by XRD, SEM, electrochemical impedance spectroscopy and Li-7 MAS NMR measurements. The structures are refined by the Rietveld method from powder X-ray diffraction data. With the introduction of Y3+, the volume of the large M1 cavity is reduced and the rhombohedral NASICON phase is stabilized at room temperature. The bulk and total Li+ conductivities of Li(1.15)Y(0.15)Zi(1.85)(PO4)(3) sintered by SPS are 1.4 x 10(-4) and 0.71 x 10(-4) S cm(-1) at 25 degrees C, respectively; the activation energy is about 0.39 eV in the temperature range 300-473 K. (C) 2013 Elsevier B.V. All rights reserved.
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