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Lee, Kyu Tae
Electrochemical Energy Systems Laboratory
Research Interests
  • Electrode materials for Li-ion batteries

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The role of carbon incorporation in SnO2 nanoparticles for Li rechargeable batteries

Cited 20 times inthomson ciCited 17 times inthomson ci
Title
The role of carbon incorporation in SnO2 nanoparticles for Li rechargeable batteries
Author
Nam, SeunghoonKim, SungsooWi, SungunChoi, HongsikByun, SujinChoi, Soon-MiYoo, Sang-ImLee, Kyu TaePark, Byungwoo
Keywords
Carbon coating; Carbon content; Carbon incorporation; Charge transfer resistance; Cycling performance; In-line; Li rechargeable batteries; Li-ion batteries; Low temperatures; Polymer precursors; Well-dispersed
Issue Date
201208
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v.211, no., pp.154 - 160
Abstract
Since carbothermal reduction of SnO2 occurs above 600 degrees C, carbon-coating experiments using various polymer precursors have been carried out at relatively low temperatures (similar to 500 degrees C). It is not likely, however, that the carbon synthesized at similar to 500 degrees C much enhances the conductivity of SnO2 anodes, because polymer precursors have undergone insufficient carbonization. This article confirms that the main role of carbon coating is sustaining the domain of each Sn nanoparticle by preventing its aggregation, and thereby improving the cycling performance of SnO2 nanoparticles. The transmission electron microscopy after cycling showing well dispersed Sn nanoparticles and electrochemical impedance spectroscopy revealing larger charge-transfer resistances with increasing carbon contents are in line with these interpretations.
URI
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DOI
http://dx.doi.org/10.1016/j.jpowsour.2012.03.061
ISSN
0378-7753
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