Atomically Well-Ordered Structure at Solid Electrolyte and Electrode Interface Reduces the Interfacial Resistance

被引：63
|
作者：
Shiraki, Susumu [1 ,2 ]
Shirasawa, Tetsuroh [3 ,4 ]
Suzuki, Tohru [2 ]
Kawasoko, Hideyuki [2 ]
Shimizu, Ryota [2 ,4 ,5 ]
Hitosugi, Taro [2 ,5 ]
机构：
[1] Nippon Inst Technol, Dept Appl Chem, Saitama 3458501, Japan
[2] Tohoku Univ, AIMR, Sendai, Miyagi 9808577, Japan
[3] Natl Inst Adv Ind Sci & Technol, Natl Metrol Inst Japan, Tsukuba, Ibaraki 3058565, Japan
[4] JST, PRESTO, Kawaguchi, Saitama 3320012, Japan
[5] Tokyo Inst Technol, Sch Mat & Chem Technol, Tokyo 1528552, Japan
来源：
ACS APPLIED MATERIALS & INTERFACES | 2018年 / 10卷 / 48期
基金：
日本科学技术振兴机构;
关键词：
X-ray crystal truncation rod scattering; thin film; all-solid-state battery; solid-electrolyte/electrode interface; LiCoO2; Li3PO4; interface resistance; LITHIUM BATTERIES; THIN-FILMS;
D O I：
10.1021/acsami.8b08926
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Using synchrotron surface X-ray diffraction, we investigated the atomic structures of the interfaces of a solid electrolyte (Li3PO4) and electrode (LiCoO2). We prepared two types of interfaces with high and low interface resistances; the low-resistance interface exhibited a flat and well-ordered atomic arrangement at the electrode surface, whereas the high-resistance interface showed a disordered interface. These results indicate that the crystallinity of LiCoO2 at the interface has a significant impact on interface resistance. Furthermore, we reveal that the migration of Li ions along the interface and into grain boundaries and antiphase domain boundaries is a critical factor reducing interface resistance.
引用
收藏
页码：41732 / 41737
页数：6
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