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제120회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Sulfur-doped graphene via electrochemical exfoliation of graphite and its electrochemical application

등록일
2017년 8월 23일 16시 42분 45초
접수번호
1214
발표코드
ELEC.P-462 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 20일 (금요일) 13:00~14:30
발표형식
포스터
발표분야
Electrochemistry
저자 및
공동저자
Jinheui Lee, JUN HO SHIM*
Department of Chemistry, Daegu University, Korea
Reduced graphene oxide has been shown to exhibit many interesting materials properties that are useful for electronic and electrochemical application, including nanoelectronics, electrocatalysis or sensors. However, the suitability of the material for these applications is limited by the fact that the graphene in its pure state exhibits zero band gap and that its electrochemical behavior resembles that of graphite. Doping of graphene with heteroatoms (such as hydrogen, nitrogen, and sulfur) can change the electron density in the graphene sheet and provide an electrode catalytic active site. Here, we have developed a simple chemical method to obtain bulk quantities of S-doped, reduced graphene oxide sheets (S-RGO) via electrochemical exfoliation of graphite in the presence of sodium thiosulphate acting as a sulfur source. The S-RGO materials are characterized by X-ray photoelectron spectroscopy, transmission electron microscopy, and Raman spectroscopy. We also investigate the electrocatalytic activity of the S-RGO catalyst for the oxygen reduction reaction (ORR) and compare it with RGO. This research was also supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2016R1D1A1B03930895).

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