论文部分内容阅读
以Li_2CO_3、Al_2O_3、TiO_2、NH_4H_2PO_4为原料,采用固相烧结法制备锂空气电池固体电解质Li_(1+x)Al_xTi_(2-x)(PO_4)_3(LATP),研究了不同x值、不同烧结温度对电解质性能的影响。通过X射线衍射仪(XRD)、扫描电镜(SEM)和电化学阻抗谱(EIS)对所制备电解质的结构与性能进行表征。结果表明在x值等于0.2时得到纯相的LATP,最佳烧结工艺是350℃保温2 h,600℃保温2 h,1 000℃保温8 h,室温下的电导率为4.89×10~(-5)S/cm。
The solid electrolyte Li_ (1 + x) Al_xTi_ (2-x) (PO_4) _3 (LATP) was prepared by solid-state sintering using Li_2CO_3, Al_2O_3, TiO_2 and NH_4H_2PO_4 as raw materials. Effect of Temperature on Electrolyte Properties. The structure and properties of the prepared electrolyte were characterized by XRD, SEM and EIS. The results show that pure phase LATP is obtained when the value of x is equal to 0.2. The optimal sintering process is 350 ℃ for 2 h, 600 ℃ for 2 h and 1 000 ℃ for 8 h. The conductivity at room temperature is 4.89 × 10 ~ 5) S / cm.