Strategic dispersion of carbon black and its application to ink-jet-printed lithium cobalt oxide electrodes for lithium ion batteries
| Autor: | Jae Man Choi, Min-Sang Song, Hyun Ho Kim, Moon Seok Kwon, Jin Hyon Lee, Hansu Kim, Sung Bok Wee, Ho Bum Park, Ungyu Paik |
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| Rok vydání: | 2011 |
| Předmět: |
Ozone
Renewable Energy Sustainability and the Environment Chemistry Scanning electron microscope Inorganic chemistry Energy Engineering and Power Technology Carbon black Microstructure Electrochemistry Electrical contacts chemistry.chemical_compound Chemical engineering Electrode Electrical and Electronic Engineering Physical and Theoretical Chemistry Lithium cobalt oxide |
| Zdroj: | Journal of Power Sources. 196:6449-6455 |
| ISSN: | 0378-7753 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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