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Strategic dispersion of carbon black and its application to ink-jet-printed lithium cobalt oxide electrodes for lithium ion batteries

Title
Strategic dispersion of carbon black and its application to ink-jet-printed lithium cobalt oxide electrodes for lithium ion batteries
Author
백운규
Keywords
Surface modification; Carbon black; Dispersion properties; Ink; Lithium ion battery
Issue Date
2011-03
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v. 196, NO 15, Page. 6449-6455
Abstract
The effects of surface-modified carbon black induced by UV/ozone and triethylenetetramine on the microstructure and electrochemical properties of ink-jet-printed LiCoO(2) electrodes for lithium ion batteries are observed. The dispersion properties of surface-modified carbon black and LiCoO(2) ink are evaluated using particle size distribution measurements, surface pressure calculations, and scanning electron microscopy. Modifications to the surface of carbon black result in improved dispersion properties, which in turn enhance the compactness and homogeneity of the microstructure of ink-jet-printed LiCoO(2) electrodes compared to those printed with as-received carbon black. Electrochemical experiments indicate that LiCoO(2) electrodes ink-jet-printed with surface-modified carbon black exhibit improved initial specific discharge capacities compared to those printed with as-received carbon black due to the better electrical contact between the carbon black and the LiCoO(2), as evidenced by the analysis of the area-specific impedance of the electrode as a function of the depth of discharge. (C) 2011 Elsevier BM. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S0378775311006562?via%3Dihub
ISSN
0378-7753
DOI
10.1016/j.jpowsour.2011.03.041
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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