High-Rate Performance of LiCoO2 Epitaxial Thin Films with Various Surface Conditions

被引：3

作者：

Yasuhara S. ^{[1
]}

Yasui S. ^{[1
]}

Taniyama T. ^{[1
]}

Itoh M. ^{[1
]}

机构：

[1] Laboratory for Materials and Structures, Tokyo Institute of Technology

来源：

MRS Advances | 2018年 / 3卷 / 22期

关键词：

intercalation; Li; thin film;

D O I：

10.1557/adv.2018.253

中图分类号：

学科分类号：

摘要：

Lithium ion batteries with high-rate performance have been demanded since electric and hybrid vehicles are released. It is known that high interfacial resistance between electrode and electrolyte prevents intercalation of lithium ions. We investigated high-rate capability of typical LiCoO2 cathode with various surface morphologies using epitaxial thin films prepared by pulsed laser deposition. As a result, high-rate performance in (104)LiCoO2 thin films was enhanced by an increase of (110)LiCoO2 facet density because diffusion coefficient of (110)LiCoO2 was larger than that of (104)LiCoO2. Therefore, a control of crystal plane at the surface is a key point for high-rate performance. © Materials Research Society 2018.

引用

页码：1243 / 1247

页数：4

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