S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Chemical and Biological Engineering (화학생물공학부) Journal Papers (저널논문_화학생물공학부)
Electrochemical Dilatometry Study on Si-Embedded Carbon Nanotube Powder Electrodes
- Park, Sangjin; Kim, Taeahn; Oh, Seung M.
- Issue Date
- Electrochemical Society
- Electrochem. Solid-State Lett., 10, A142 (2007)
- Si-embedded carbon nanotube (Si–C/NT) powders were prepared by dispersing carbon nanotubes (CNTs) and Si in the tetrahydrofuran
solution containing poly(vinyl chloride) (PVC) as a dispersion agent, and then carbonizing the PVC. A better cycle
performance was observed with the Si–C/NT containing larger void volume. The origin of this feature was addressed by an
electrochemical dilatometry study, where it was found that the electrode swelling becomes less significant when the Si–C/NT
possesses a larger void space. It is believed that the void space plays a buffering role against the volume expansion of Si,
alleviating the breakdown of electrode integrity.
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