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학술발표회초록보기

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  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Spectroscopic and electrochemical characteristics of carboxylated graphene manganese oxide nanocomposites

등록일
2012년 3월 2일 16시 19분 04초
접수번호
1577
발표코드
ELEC.P-1303 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 25일 (수요일) 18:00~21:00
발표형식
포스터
발표분야
전기화학
저자 및
공동저자
박경원, 정종화
경상대학교 화학과, Korea
Graphene oxide-COOH -Mn2O3 (GO-COOMn) composites grown Mn2O3 nano-wire onto graphene sheets by a one-step thermal method suing graphene oxide-COOH (GO-COOH) and Mn(NO3)2. The graphene oxide (GO) prepared by Hummer?s method using graphite flakes was used as a starting material. The GO-COOH sheets were synthesized by GO and chloroacetic acid (Cl-CH2-COOH). The GO, GO-COOH and GO-COOMn were characterized by XRD, AFM, SEM, TEM, FT-IR, 13C-NMR, and Raman spectroscopy. The electrochemical performances of the GO-COOMn supercapacitor were tested by cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge-discharge tests. The results show that the asymmetric supercapacitor has electrochemical capacitance performance within potential range 0 ~ 0.7 V. The supercapacitor delivered a specific capacitance of ~ 300 F g-1 at a current density of 50 mA/cm2. This method provides an easy and straightforward approach to deposit Mn2O3 nano-wire s onto the graphene sheets, and may be readily extended to the preparation of other classes of hybrids based on GO sheets for technological applications.

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