Suppressing propylene carbonate decomposition by coating graphite electrode foil with silver (Reprinted from Electrochimica Acta vol 52, pg 5417-5421, 2007)

被引：9

作者：

Gao, J.

Zhang, H. P.

Fu, L. J.

Zhang, T.

Wu, Y. P. ^{[1
]}

Takamura, T.

Wu, H. Q.

Holze, R.

机构：

[1] Fudan Univ, Dept Chem, Shanghai Key Lab Mol Catal & Innovat Mat, Shanghai 200433, Peoples R China

[2] Tech Univ Chemnitz, Inst Chem, D-09111 Chemnitz, Germany

来源：

ELECTROCHIMICA ACTA | 2007年 / 53卷 / 03期

基金：

中国国家自然科学基金;

关键词：

lithium-ion battery; anode material; low temperature; propylene carbonate; coating;

D O I：

10.1016/j.electacta.2007.10.008

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A method has been developed to suppress the decomposition of propylene carbonate (PC) by coating graphite electrode foil with a layer of silver. Results from electrochemical impedance measurements show that the Ag-coated graphite electrode presents lower charge transfer resistance and faster diffusion of lithium ions in comparison with the virginal one. Cyclic voltammograms and discharge-charge measurements suggest that the decomposition of propylene carbonate and co-intercalation of solvated lithium ions are prevented, and lithium ions can reversibly intercalate into and deintercalate from the Ag-coated graphite electrode. These results indicate that Ag-coating is a good way to improve the electrochemical performance of graphitic carbon in PC-based electrolyte solutions. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1380 / 1384

页数：5

共 27 条

[1] THE CATHODIC DECOMPOSITION OF PROPYLENE CARBONATE IN LITHIUM BATTERIES [J].