Characterization of Thin-Film Lithium Batteries with Stable Thin-Film Li3PO4 Solid Electrolytes Fabricated by ArF Excimer Laser Deposition

被引：121

作者：

Kuwata, Naoaki ^{[1
]}

Iwagami, Naoya ^{[1
]}

Tanji, Yoshinari ^{[1
]}

Matsuda, Yasutaka ^{[1
]}

Kawamura, Junichi ^{[1
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2010年 / 157卷 / 04期

关键词：

ionic conductivity; lithium; lithium compounds; pulsed laser deposition; secondary cells; solid electrolytes; thin film devices; thin films; ACOUSTIC-WAVE PROPERTIES; POLARIZED RAMAN-SPECTRA; PHOSPHORUS OXYNITRIDE; EPITAXIAL-GROWTH; LICOO2; CATHODES; INTERFACE;

D O I：

10.1149/1.3306339

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

High quality Li3PO4 thin films have been prepared by pulsed laser deposition (PLD) as a solid electrolyte for thin-film batteries. The structure, composition, ionic conductivity, and electrochemical stability of the Li3PO4 thin films have been characterized. The Li3PO4 film exhibits a single lithium-ion conductor with an ionic conductivity of 4.0x10(-7) S cm(-1) at 25 degrees C and an activation energy of 0.58 eV. The Li3PO4 film is electrochemically stable in the potential range from 0 to 4.7 V vs Li/Li+. All-solid-state thin-film batteries, Li/Li3PO4/LiCoO2, have been fabricated by using PLD-grown Li3PO4 thin film. The thin-film battery shows excellent intercalation property and stability for long-term cycling in the potential range from 3.0 to 4.4 V.

引用

页码：A521 / A527

页数：7