High lithium ion conduction in garnet-type Li6La3ZrTaO12
High lithium ion conduction in garnet-type Li6La3ZrTaO12
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DOI：
10.1016/j.elecom.2011.07.008
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发表时间：
2011-12-01
影响因子：
5.4
通讯作者：
Goodenough, John B.
中科院分区：
文献类型：
--
作者：
Li, Yutao;Wang, Chang-An;Goodenough, John B.
采用常规固相反应制备了通式为Li6La3ZrTaO12的石榴石相关氧化物。 X 射线衍射 (XRD) 和交流阻抗用于确定相形成和锂离子电导率。根据粉末 X 射线衍射数据，通过 Rietveld 方法对结构进行精修。 Li6La3ZrTaO12 是立方体，在 Ia-3d 空间群中结晶，室温晶格参数 a = 12.8873 埃。 Li6La3ZrTaO12在25℃时的体积和总锂离子电导率分别为2.5 x 10(-4) S cm(-1)和1.8 x 10(-4) S cm(-1)；在 298-450 K 温度范围内，活化能约为 0.42 eV。 (C) 2011 Elsevier B.V. 保留所有权利。
The garnet-related oxide with general formula Li6La3ZrTaO12 was prepared by conventional solid-state reaction. X-ray diffraction (XRD) and AC impedance were used to determine phase formation and the lithium-ion conductivity. The structures were refined by the Rietveld method from powder X-ray diffraction data. Li6La3ZrTaO12 is cubic and crystallizes in the space group Ia-3d with room-temperature lattice parameter a = 12.8873 angstrom. The bulk and total lithium ion conductivities of Li6La3ZrTaO12 at 25 degrees C were 2.5 x 10(-4) S cm(-1) and 1.8 x 10(-4) S cm(-1), respectively; the activation energy was about 0.42 eV in the temperature range 298-450 K. (C) 2011 Elsevier B.V. All rights reserved.