The preparation and lithium mobility of zinc based NASICON-type solid electrolyte Li_1+2x+2yAl_xZn_yTi_{2鈭?span style='font-style: italic'>x鈭?span style='font-style: italic'>y}Si_xP_{3鈭?span style='font-style: italic'>x}O₁₂

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• 作者：Xiaoping Xu ; Tianci Yang ; Miao Shui ; Zhangchao Lu ; Shan Gao ; Jie Shu ; Weidong Zheng ; Liangliang Cheng ; Lin Feng ; Yuanlong Ren
• 关键词：C. Ionic conductivity ; Nasicon-type solid electrolyte ; Ion doping ; Rietveld refinement
• 刊名：Ceramics International
• 出版年：March, 2014
• 年：2014
• 卷：40
• 期：2
• 页码：3819-3822
• 全文大小：682 K

文摘

A series of Nasicon-type solid electrolytes Li_1+2x+2yAl_xZn_yTi_{2鈭?em>x鈭?em>y}Si_xP_3鈭?em>xO₁₂ was synthesized by conventional solid state ceramic route. X-ray diffraction and Rietveld whole pattern refinement were applied to investigate the phase, structure and the unit cell parameters of those solid electrolytes. EIS complex impedance method was carried out to study the Li⁺ conductivity. The results showed that Li_1+2x+2yAl_xZn_yTi_{2鈭?em>x鈭?em>y}Si_xP_3鈭?em>xO₁₂ with x=0.1 y=0.5 presents highest ionic conductivity 7.2脳10^鈭? S cm^鈭? at ambient temperature and 2.0脳10^鈭? S cm^鈭? at 473 K. The activation energy of Li⁺ migration was calculated to be ca. 20 kJ mol^鈭?. The influence of Zn²⁺ element on the structure and Li⁺ mobility was preliminary explained.