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  • 09월 06일 15시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제112회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Gap Controlled Reduced Graphene Oxide for High Performance Supercapacitors

2013년 9월 5일 16시 32분 29초
MAT.P-1115 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 16일 (수요일) 16:00~19:00
저자 및
이근식, 이효영1,*
성균관대학교 화학과, Korea
1성균관대학교 화학과, CSMM, Korea
Since appearance of graphene, supercapacitor field have paid attention to that because of its excellent conductivity, surface area, stability and easy to functionalization.[1] In this work, we developed a facile, cost effective and efficient method for preparing gap controlled reduced graphene oxide (rGO) using three kinds of bis-diazonium salt (BDs) for supercapacitors. Fabricated rGO-BDs1, rGO-BDs2 and rGO-BDs3 was characterized by SEM, TEM, Raman spectroscopy and XPS, further shown electrochemical characteristics for supercapacitor properties. The series of rGO-BDs show different interlayer distances that each material has specific gap size due to their unique structural properties. Surprisingly the rGO-BDs2 exhibits excellent specific capacitance. Because, in here, its gap size corresponds to solvated electrolyte ion size, further this can affect to smooth absorption/desorption of electrolyte on electrode and to increase the specific capacitance.[2] And the rGO-BDs1 and rGO-BD3 like subnanopores material also show higher capacitance than the rGO having narrow gap. Our results demonstrate that graphene material containing suitable gap size corresponding to electrolyte ion can be applied to Li ion battery, fuel cell, gas storage, and energy conversion/harvesting systems. [1] Y. Yoon et al. Adv. Mater. 2013, 25, 4437-4444 [2] J. Chmiola et al. Science 2006, 313, 1760-1763