Preparation and characterization of ramsdellite Li2Ti3O7 as an anode material for asymmetric supercapacitors

被引：75

作者：

Chen, F

Li, RG

Hou, M

Liu, L

Wang, R

Deng, ZH

机构：

[1] Chinese Acad Sci, Chengdu Inst Organ Chem, Chengdu 610041, Peoples R China

[2] Shanghai Aowei Technol Co Ltd, Shanghai 201203, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2005年 / 51卷 / 01期

关键词：

sol-gel; Li2Ti3O7; electrochemical properties; asymmetric supercapacitor;

D O I：

10.1016/j.electacta.2005.03.047

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Ramsdellite Li2Ti3O7 was first synthesized via sol-gel process with good crystallity of an average particle size of 0.175 mu m. The product was thoroughly investigated as a lithium intercalation compound, and as an active anode material in asymmetric supercapacitors coupling with activated carbon as cathode. Lithium intercalation reactions were found occurring at 1.32 and 1.62 V versus Li/Li+, respectively. A reversible specific capacity of 150 mA h g(-1) at 1C was obtained on Li2Ti3O7 electrode in a nonaqueous electrolyte. The charge current was found to strongly influence the anodic discharge capacity in the asymmetric cell. The capacity retention at 10C charge-discharge rate was found to be 75.9% in comparison with that at 1C. (C) 2005 Elsevier Ltd. All rights reserved.

引用

页码：61 / 65

页数：5

共 10 条

[1] Electrochemical properties of sol-gel Li4/3Ti5/3O4 [J].