Electrical and electrochemical properties of the 70Li2S·(30-z)P2S5·zP2O5 glass-ceramic electrolytes
The electrical and electrochemical properties of the 70Li2S·(30-x)P2S5·xP2O5 glass-ceramics were investigated. The glass-ceramics with up to 5 mol% of P2O5 kept high conductivity over 10-3 S cm-1. The 70Li2S·27P2S5·3P2O5 glass-ceramic exhibited the highest conductivity of 3.0×10-3 S cm-1 at room temperature and the lowest activation energy of 16 kJ mol-1 for conduction. Electrochemical stability of the glass-ceramic was improved by substituting 3 mol% of P2O5 for P2S5 because the oxygen-incorporated Li7P3S11 crystal would be precipitated in the glass-ceramic. The all-solid-state cell using the 70Li2S·27P2S5·3P2O5 oxysulfide glass-ceramic worked as a lithium secondary battery at room temperature.
Solid electrolyte Glass-ceramic Ozysulfide Lithium ion conductivity All-solid-state lithium secondary battery
Keiichi Minami Akitoshi Hayashi Masahiro Tatsumisago
Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
国际会议
The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)
上海
英文
1282-1285
2007-07-01（万方平台首次上网日期，不代表论文的发表时间）