| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 봄 (05/02 ~ 05/04, 대구 엑스코(EXCO)) |
| 권호 |
22권 1호 |
| 발표분야 |
환경에너지_포스터 |
| 제목 |
Improved cycle performance of silicon anode by fluorination and carbon-coating for lithium ion batteries |
| 초록 |
Carbon coating is known as a method for preventing the rapid volume expansion of the silicon anode during charge/discharge process. In this study, Silicon was fluorinated by fluorine gas in variety partial pressure for more effective carbon-coating. Then, fluorinated silicon was coated by pitch from pyrolysis fuel oil (PFO) using heat treatment. Lithium-ion battery coin cell was fabricated with dual treated silicon as anode and Li metal as cathode. The surface property of fluorinated samples was investigated by X-ray photoelectron microscopy (XPS) and the amount of carbon-coating was investigated by thermogravimetric analysis (TGA). The electrochemical properties were investigated by charge/discharge test and electrochemical impedance spectroscopy (EIS). The amount of carbon-coating was increased by fluorination due to the improving the surface energy of silicon through fluorination. In addition, charge/discharge test showed improved capacity retention due to carbon-coating. |
| 저자 |
한정인, 김경훈, 최예지, 이영석
|
| 소속 |
충남대 |
| 키워드 |
Silicon; Fluorination; Pitch; Carbon-coating; Lithium ion battery
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| E-Mail |
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