화학공학소재연구정보센터
학회 한국공업화학회
학술대회 2018년 가을 (10/31 ~ 11/02, 제주국제컨벤션센터(ICC JEJU))
권호 22권 2호
발표분야 에너지저장.변환_포스터
제목 Energy Density of Full Cell Symmetric Supercapacitor Based on Heteroatom-Incorporated Three-dimensional Macroporous Graphene Electrode and Organic Electrolyte
초록 We report the synthesis of nitrogen- and sulfur-doped three-dimensional (3D) graphene architectures further treated by steam activation to increase the surface area. Tetraethylammonium tetrafluoroborate (TEABF4) in propylene carbonate as an organic electrolyte is used to enlarge the voltage range of a supercapacitor (SC) for high energy density. The 3D nitrogen- and sulfur-doped, steam activated, reduced graphene oxides (N-SRGO and S-SRGO) contained 7.84% and 6.93% of N and S heteroatoms. As shown in the galvanic charge/discharge curves, a range of 0-2.5 V in the 3D N-SRGO architectures showed the highest capacitance of 23.1 F g-1, delivering maximum energy and power densities of up to 20 Wh kg-1 and 6190 W kg-1.
저자 Manikantan Kota, 박호석
소속 SKKU
키워드 Graphene; Nanostructure; doping; supercapacitor; organic electrolyte; energy density
E-Mail phs0727@skku.edu