Lithium-ion transfer at interface between carbonaceous thin film electrode/electrolyte

被引：55

作者：

Ogumi, Z

Abe, T ^{[1
]}

Fukutsuka, T

Yamate, S

Iriyama, Y

机构：

[1] Kyoto Univ, Grad Sch Engn, Sakyo Ku, Kyoto 6068501, Japan

[2] Himeji Inst Technol, Fac Engn, Himeji, Hyogo 6712201, Japan

来源：

JOURNAL OF POWER SOURCES | 2004年 / 127卷 / 1-2期

关键词：

carbon; thin film; lithium-ion battery; ion transfer; charge transfer;

D O I：

10.1016/j.jpowsour.2003.09.009

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：

A carbonaceous thin film electrode was prepared by plasma-assisted chemical vapor deposition, and lithium-ion transfer at the interface between the resultant thin film electrode and the electrolyte was studied by AC impedance spectroscopy. On the Nyquist plots, semi-circles assigned as charge (Li+ ion) transfer resistance were observed in the intermediate frequency region. The charge-transfer resistance was dependent on electrode potential. The activation energy for lithium-ion transfer through interface between the electrode and the electrolyte was evaluated, and the value was very large. Hence, it is concluded that a hi h-energy barrier of activation exists at the interface between the electrode and the electrolyte. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：72 / 75

页数：4

共 22 条

[1] Synthesis of highly graphitized carbonaceous thin films by plasma assisted chemical vapor deposition and their electrochemical properties in propylene carbonate solution [J].