XPS and SEM analysis between Li/Li3PS4 interface with Au thin film for all-solid-state lithium batteries

被引：129

作者：

Kato, Atsutaka ^{[1
]}

Kowada, Hiroe ^{[1
]}

Deguchi, Minako ^{[1
]}

Hotehama, Chie ^{[1
]}

Hayashi, Akitoshi ^{[1
]}

Tatsumisago, Masahiro ^{[1
]}

机构：

[1] Osaka Prefecture Univ, Grad Sch Engn, Dept Appl Chem, Naka Ku, 1-1 Gakuen Cho, Sakai, Osaka 5998531, Japan

来源：

SOLID STATE IONICS | 2018年 / 322卷

基金：

日本科学技术振兴机构;

关键词：

Li metal negative electrode; All-solid-state battery; Solid electrolyte; Interface formation; RAY PHOTOELECTRON-SPECTROSCOPY; IONIC-CONDUCTIVITY; METAL ANODE; ELECTROLYTE; GLASS; CONDUCTORS; LI2S-P2S5;

D O I：

10.1016/j.ssi.2018.04.011

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Li metal is an attractive negative electrode to achieve all-solid-state batteries with high energy density. Interface formation between Li metal and solid electrolytes is a key for the improvement of them. Here, we investigated effects of inserting a gold thin film to the Li/Li3PS4 interface on the structure of the electrolyte and morphology change of Li metal. XPS analysis revealed that Li3PS4 electrolytes in the vicinity of Li metal were partially reduced regardless of the insertion of the Au thin film. The reduced product layer had a low resistance and excellent stability. On the other hand, SEM observation exhibited that the Au thin film between Li metal and Li3PS4 electrolytes prevented void generation after the initial Li dissolution and increased the sites for Li deposition. The more uniform morphology changes of Li metal contributed to the better reversibility of Li utilization for the cell with the Au thin film.

引用

页码：1 / 4

页数：4

共 20 条

[1] ELECTROCHEMICAL ALLOYING OF LITHIUM IN ORGANIC ELECTROLYTES [J].