Low Interface Resistance in Solid-State Lithium Batteries Using Spinel LiNi0.5Mn1.5O4(111) Epitaxial Thin Films

被引：20

作者：

Kawasoko, Hideyuki ^{[1
,2
]}

Shirasawa, Tetsuroh ^{[4
]}

Shiraki, Susumu ^{[5
]}

Suzuki, Toru ^{[2
]}

Kobayashi, Shigeru ^{[3
]}

Nishio, Kazunori ^{[3
]}

Shimizu, Ryota ^{[3
,6
]}

Hitosugi, Taro ^{[3
]}

机构：

[1] Tohoku Univ, Dept Chem, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, AIMR, Sendai, Miyagi 9808577, Japan

[3] Tokyo Inst Technol, Sch Mat & Chem Technol, Tokyo 1528550, Japan

[4] Natl Inst Adv Ind Sci & Technol, Natl Metrol Inst Japan, Tsukuba, Ibaraki 3058565, Japan

[5] Nippon Inst Technol, Dept Appl Chem, Saitama 3458501, Japan

[6] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan

来源：

ACS APPLIED ENERGY MATERIALS | 2020年 / 3卷 / 02期

关键词：

solid-state Li batteries; interface resistance; LiNi0.5Mn1.5O4; solid electrolyte; epitaxial thin film; X-ray CTR scattering; ELECTROLYTE/ELECTRODE INTERFACES; SURFACE; OXIDE;

D O I：

10.1021/acsaem.9b01766

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：

Solid-state Li batteries that use spinel LiNi0.5Mn1.5O4 as a positive electrode are promising energy-storage devices for portable electronics and electric vehicles. For practical applications of such batteries, it is crucial to understand the ionic conductivity across the solid-electrolyte/electrode interfaces. Here, we demonstrate a low interface resistance of 34 Omega cm(2) in solid-state Li batteries using LiNi0.5Mn1.5O4(111) epitaxial thin films with atomically ordered surfaces as the positive electrode. Further, we find that the interface resistance using Li3PO4/LiNi0.5Mn1.5O4(111) is larger than that using LiNi0.5Mn1.5O4(001) epitaxial thin films. These results indicate the presence of anisotropic interface resistance when different facets of spinel LiNi0.5Mn1.5O4 are used as the positive electrode.

引用

页码：1358 / 1363

页数：11

共 20 条

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