电导率
离子
分析化学(期刊)
电解质
材料科学
锂(药物)
中子衍射
坩埚(大地测量学)
快离子导体
活化能
衍射
晶格能
晶体结构
化学
物理
结晶学
物理化学
电极
色谱法
内分泌学
计算化学
有机化学
光学
医学
作者
Yutao Li,Jian Tao Han,Chang An Wang,Hui Xie,John B Goodenough
摘要
The garnet-related oxides with the general formula Li7−xLa3Zr2−xTaxO12 (0 ≤ x ≤ 1) were prepared by conventional solid-state reaction. X-ray diffraction (XRD), neutron diffraction and AC impedance were used to determine phase formation and the lithium-ion conductivity. The lattice parameter of Li7−xLa3Zr2−xTaxO12 decreased linearly with increasing x. Optimum Li-ion conductivity in the Li-ion garnets Li7−xLa3Zr2−xTaxO12 is found in the range 0.4 ≤ x ≤ 0.6 for samples fired at 1140 °C in an alumina crucible. A room-temperature σLi ≈ 1.0 × 10−3 S cm−1 for x = 0.6 with an activation energy of 0.35 eV in the temperature range of 298–430 K makes this Li-ion solid electrolyte attractive for a new family of Li-ion rechargeable batteries.
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