Electrical properties of garnet-like lithium ionic conductors Li5+xSrxLa3--xBi2O12 fabricated by spark plasma sintering method |
| |
Authors: | Yun-Xia GAO Xian-Ping WANG Qin-Xing SUN Zhong ZHUANG Qian-Feng FANG |
| |
Affiliation: | Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China |
| |
Abstract: | A typical approach involving Pechini method and spark plasma sintering (SPS) method was presented for the preparation of high density Li5+xSrxLa3--xBi2O12 (x = 0, 1) ceramics. Phase formation, microstructure, grain size and electrical properties of the specimens were examined using XRD, SEM and alternating current impedance spectroscopy (ACIS). Dense Li5La3Bi2O12 and Li6SrLa2Bi2O12 ceramics with pure garnet-like phase, relative density of 97% and average grain size of about 5 μm were fabricated using this approach. The total conductivities at 298 K of Li5La3Bi2O12 and Li6SrLa2Bi2O12 ceramics prepared by the SPS method are 5.1×10-5 and 6.8×10-5 S/cm, respectively, 2 times higher than that of samples prepared by the conventional sintering method. |
| |
Keywords: | lithium ionic conductor Li5+xSrxLa3--xBi2O12 Pechini method spark plasma sintering (SPS) ionic conductivity |
|
| 点击此处可从《》浏览原始摘要信息 |
|
点击此处可从《》下载全文 |
|