Stabilizing lithium plating-stripping reaction between a lithium phosphorus oxynitride glass electrolyte and copper thin film by platinum insertion

被引:39
作者
Okita, Kengo [1 ]
Ikeda, Ken-ichi [1 ]
Sano, Hikaru [2 ,3 ]
Iriyama, Yasutoshi [1 ,2 ]
Sakaebe, Hikari [2 ,3 ]
机构
[1] Shizuoka Univ, Dept Mat Sci & Chem Engn, Fac Engn, Naka Ku, Hamamatsu, Shizuoka 4328561, Japan
[2] CREST, JST, Chiyoda Ku, Tokyo 1020075, Japan
[3] Natl Inst Adv Ind Sci & Technol, Res Inst Ubiquitous Energy Devices, Osaka 5638577, Japan
关键词
All-solid state lithium batteries; Lithium metal anode; Thin film; Interface; SOLID-ELECTROLYTE; PHASE-DIAGRAM; ION BATTERIES; ANODE; LAYER; CELL;
D O I
10.1016/j.jpowsour.2010.10.014
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
Lithium (Li) plating-stripping reaction properties at the lithium phosphorus oxynitride glass electrolyte (UPON)/copper thin film (Cu) interface is improved by the insertion of nano-thickness platinum (Pt) layer at the interface The UPON films are formed on mirror-polished lithium-ion conductive solid electrolyte sheets and current collector thin films of Li Cu-Pt multi layer and Cu are formed on the UPON films The plating-stripping reactions at the UPON/current collector films interface are carried out by galvanostatic and potential sweep measurements Galvanostatic measurements reveal that Pt layer insei non reduces the overvoltage of the reaction and improves its coulomb efficiency Also cyclic voltammetry measurement suggests formation of Li-Pt alloys at higher voltages than 0V (vs Li/Li+) during the lithium plating process Scanning electron microscopy observation clarifies that platinum insertion moderate non-uniform lithium plating reaction Most probably Li-Pt alloys increase the reaction sites resulting in both the stabilization of current collector and the reduction of the overvoltage of the lithium plating-stripping reaction upon cycling The results shown here will be useful in improving the anode reaction of the Li-free" all-solid-state lithium batteries (C) 2010 Elsevier B V All rights reserved
引用
收藏
页码:2135 / 2142
页数:8
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