Electrochemical Performance of Activated Carbon Electrode Added with LiCoO2 for Hybrid Capacitor

Abstract:

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In this study, mixed active material electrodes, composed of an activated carbon (MSP20) and LiCoO2, were prepared as cathodes for a high-capacitive hybrid capacitor. The electrochemical properties of (MSP20+LiCoO2)/Li cells were examined in terms of the weight composition and the particle size of LiCoO2 powder in the electrodes. As adding more LiCoO2 powders in the electrode, the volumetric capacity (mAh/ml) of the electrode became higher. In order to examine the size effect on the electrochemical performance, the LiCoO2 powders were modified by ball milling. The (MSP20+LiCoO2)/Li cells using 10 and 20 wt.% of 30h-milled LiCoO2 powder exhibited the lower internal resistivities and the better capacity retentions after 100 charge-discharge cycles than those using 10 or 20 wt.% of raw LiCoO2 powders.

Info:

Periodical:

Solid State Phenomena (Volumes 124-126)

Edited by:

Byung Tae Ahn, Hyeongtag Jeon, Bo Young Hur, Kibae Kim and Jong Wan Park

Pages:

947-950

DOI:

10.4028/www.scientific.net/SSP.124-126.947

Citation:

I. J. Kim et al., "Electrochemical Performance of Activated Carbon Electrode Added with LiCoO2 for Hybrid Capacitor", Solid State Phenomena, Vols. 124-126, pp. 947-950, 2007

Online since:

June 2007

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Price:

$35.00

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