首页> 外文期刊>CERAMICS INTERNATIONAL >The preparation and lithium mobility of zinc based NASICON-type solid electrolyte Li_(1+2x+2y)Al_xZn_yTi_(2-x-y)Si_xP_(3-x)O_(12)
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The preparation and lithium mobility of zinc based NASICON-type solid electrolyte Li_(1+2x+2y)Al_xZn_yTi_(2-x-y)Si_xP_(3-x)O_(12)

机译:锌基NASICON型固体电解质Li_(1 + 2x + 2y)Al_xZn_yTi_(2-x-y)Si_xP_(3-x)O_(12)的制备及锂迁移率

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摘要

A series of Nasicon-type solid electrolytesLi_(1+2x+2y)Al_xZn_yTi_(2-x-y)Si_xP_(3-x)O_(12) 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+2y)Al_xZn_yTi_(2-x-y)Si_xP_(3-x)O_(12) with x=Q.l y-Q.5 presents highest ionic conductivity 7.2 × 10~(-5) S cm(-1) at ambient temperature and 2.0 × 10~(-3) S cm~(-1)at 473 K. The activation energy of Li~+ migration was calculated to be ca. 20 kJ mol~(-1). The influence of Zn~(2+) element on the structure and Li~+ mobility was preliminary explained.
机译:通过常规固态陶瓷路线合成了一系列Nasicon型固体电解质Li_(1 + 2x + 2y)Al_xZn_yTi_(2-x-y)Si_xP_(3-x)O_(12)。利用X射线衍射和Rietveld整体图案细化技术研究了这些固体电解质的相,结构和晶胞参数。采用EIS复阻抗法研究了Li〜+电导率。结果表明,Li =(1 + 2x + 2y)Al_xZn_yTi_(2-xy)Si_xP_(3-x)O_(12)x = Ql yQ.5的离子电导率最高,为7.2×10〜(-5)S cm( -1)在环境温度和473 K下为2.0×10〜(-3)S cm〜(-1)。计算出的Li〜+迁移的活化能约为ca。 20 kJ mol〜(-1)。初步解释了Zn〜(2+)元素对结构和Li〜+迁移率的影响。

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