烧结工艺对固态合成法制备的LiAlLaZrO石榴石锂离子电导率的影响。
The effect of sintering process on lithium ionic conductivity of LiAlLaZrO garnet produced by solid-state synthesis.
作者信息
Xue Wenjuan, Yang Yaping, Yang Qiaoling, Liu Yuping, Wang Lian, Chen Changguo, Cheng Renju
机构信息
College of Chemistry and Chemical Engineering, Chongqing University Chongqing 401331 China
Chongqing Research Center for Advanced Materials, Chongqing Academy of Science and Technology Chongqing 401123 China.
出版信息
RSC Adv. 2018 Apr 9;8(24):13083-13088. doi: 10.1039/c8ra01329b.
Recently, solid-state electrolyte lithium lanthanum zirconium oxide garnet (LiLaZrO, LLZO) has attracted great attention due to its high room temperature conductivity of lithium ions and stability against lithium metal electrodes. The Al-doped cubic garnet LiAlLaZrO was synthesized by a conventional solid-state method at different sintering temperatures. The influence of the sintering process on the structure and ionic conductivity was investigated by X-ray diffraction, electrochemical impedance spectroscopy, and scanning electron microscopy. The results showed that Li vaporization and relative density were affected by the sintering process. The synergistic effects of Li concentration and relative density determined the Li ionic conductivity. Compared with the relative density, the Li concentration plays a more important role in determining the ionic conductivity the solid-state method.
最近，固态电解质锂镧锆氧化物石榴石（LiLaZrO，LLZO）因其在室温下具有较高的锂离子电导率以及对锂金属电极的稳定性而备受关注。通过传统的固态方法在不同烧结温度下合成了铝掺杂的立方石榴石LiAlLaZrO。采用X射线衍射、电化学阻抗谱和扫描电子显微镜研究了烧结过程对结构和离子电导率的影响。结果表明，烧结过程会影响锂的蒸发和相对密度。锂浓度和相对密度的协同作用决定了锂离子电导率。与相对密度相比，锂浓度在通过固态法确定离子电导率方面起着更重要的作用。
Zotero 插件