Enhanced ionic conductivity of composite solid electrolyte by directionally ordered structures of linear Li1.3Al0.3Ti1.7(PO4)3</ sub>

作者：Li, You^*; Tang, Mulan; Xu, Shuxin; Zhang, Shuchao; Zhai, Yuxin; Yin, Jiarong; Zou, Zhengguang

来源：JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, 2022, 114: 126-133.

DOI：10.1016/j.jiec.2022.06.039

• Composite solid electrolyte
• Ordered structures
• Ionic conductivity
• NASICON-type structures
• Electrospinning

The NASICON-type solid electrolyte structure of Li1.3Al0.3Ti1.7(PO4)(3) (LATP) exhibits good electrochemical performance and thermal stability, and has been promising as a solid electrolyte. Here, a stable good -stability LATP precursor spinning solution was prepared using the sol-gel method for the first time. A linear LATP solid electrolyte with an oriented ordered structure was obtained using improved electrostatic spinning equipment. The sintering process regime of the LATP-ordered construction was determined. The ionic conductivity of the prepared LATP-PEO/LiClO4-PEG composite solid-state electrolyte with an ordered structure was as high as 2.05 x 10-4 S.cm(-1) at room temperature (25 ?), one order of magnitude higher than the ionic conductivity of the LATP composite solid-state electrolyte reported so far. Organic solid-state electrolytes to protect LATP-ordered structured solid-state electrolytes yield excellent electro-chemical stability in lithium-metal batteries.

• 单位
  y; 桂林理工大学