INTERCALATION OF LITHIUM IN RF-SPUTTERED NIOBIUM OXIDE FILM AS ELECTRODE MATERIAL FOR LITHIUM-ION BATTERIES

被引：33

作者：

KUMAGAI, N

TATESHITA, Y

TAKATSUKA, Y

BABA, M

IKEDA, T

TANNO, K

机构：

[1] Faculty of Engineering, Iwate University, Morioka, 020

来源：

JOURNAL OF POWER SOURCES | 1995年 / 54卷 / 02期

关键词：

LITHIUM INTERCALATION; NIOBIUM OXIDE; LITHIUM ION BATTERIES;

D O I：

10.1016/0378-7753(94)02062-8

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：

Niobium oxide films have been prepared by r.f. sputtering using an argon sputter gas and a Nb2O5 target; the oxide films have been characterized by scanning electron microscopy, X-ray diffraction method and electrochemical techniques; The oxide film heat-treated at 500 to 700 degrees C in argon atmosphere is a monoclinic Nb2O5 highly oriented along the c-axis perpendicular to the substrate. The oxide film undergoes a reversible lithium intercalation and de-intercalation process. The kinetics of the intercalation process of lithium into the highly oriented Nb2O5 film was studied using an a.c. impedance method. Furthermore, a rocking-chair-type V2O5 film/Li2Nb2O5 film cell could be charge/discharged over 50 times at a current of 10 mu A at 25 degrees C.

引用

页码：175 / 179

页数：5