A high rate, high capacity and long life (LiMn2O4 + AC)/Li4Ti5O12 hybrid battery-supercapacitor

被引：119

作者：

Hu, Xuebu ^{[1
,2
]}

Deng, Zhenghua ^{[1
,2
]}

Suo, Jishuan ^{[1
]}

Pan, Zhonglai ^{[2
]}

机构：

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

[2] Zhongke Laifang Power Technol Co Ltd, Chengdu 610041, Sichuan, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2009年 / 187卷 / 02期

关键词：

Hybrid battery-supercapacitor; (LiMn2O4 + AC)/Li4Ti5O12; Long life; High rate; High capacity; BATTERY; LIMN2O4; PERFORMANCE; COMPOSITE;

D O I：

10.1016/j.jpowsour.2008.11.033

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 hybrid battery-supercapacitor (LiMn2O4 + AC)/Li4Ti5O12 using a Li4Ti5O12 anode and a LiMn2O4/activated carbon (AC) composite cathode was built. The electrochemical performances of the hybrid battery-supercapacitor (LiMn2O4+AC)/Li4Ti5O12 were characterized by cyclic voltamniograms. electrochemical impedance spectra, rate charge-discharge and cycle performance testing. It is demonstrated that the hybrid battery-supercapacitor has advantages of both the high rate capability from hybrid capacitor AC/Li4Ti5O12 and the high capacity from secondary battery LiMn2O4/Li4Ti5O12. Moreover, the electrochemical measurements also show that the hybrid battery-supercapacitor has good cycle life performance. At 4C rate, the capacity loss in constant current mode is no more than 7.95% after 5000 cycles, and the capacity loss in constant current-constant voltage mode is no more than 4.75% after 2500 cycles. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：635 / 639

页数：5