High Li+ conduction in NASICON-type Li1+x,YxZr2-x(PO4)3 at room temperature

被引：78

作者：

Li, Yutao ^{[1
]}

Liu, Meijing ^{[1
,2
]}

Liu, Kai ^{[1
]}

Wang, Chang-An ^{[1
]}

机构：

[1] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Sch Mat Sci & Engn, Beijing 100084, Peoples R China

[2] Jingdezhen Ceram Inst, Sch Mat Sci & Engn, Jingdezhen 333001, Jiangxi, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2013年 / 240卷

基金：

中国国家自然科学基金;

关键词：

Li solid electrolyte; NASICON; Li-ion battery; Ionic conductivity; LITHIUM TITANIUM PHOSPHATE; IONIC-CONDUCTIVITY; NEUTRON-DIFFRACTION; SOLID ELECTROLYTES; ALPHA-LIZR2(PO4)(3); FRAMEWORK; BATTERIES; MOBILITY;

D O I：

10.1016/j.jpowsour.2013.03.175

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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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页码：50 / 53

页数：4

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