ETRI-Knowledge Sharing Plaform



논문 검색
구분 SCI
연도 ~ 키워드


학술지 Fast Diffusion Supercapacitors Via an Ultra-High Pore Volume of Crumpled 3D Structure Reduced Graphene Oxide Activation
Cited 22 time in scopus Download 0 time Share share facebook twitter linkedin kakaostory
이근식, 김도영, 윤여흥, 양정희, 윤호경, 유인규, 이효영
RSC Advances, v.5 no.75, pp.60914-60919
Royal Society of Chemistry (RSC)
In order to obtain a high performance supercapacitor, there are several factors that must be achieved including a high specific surface area (SSA), high electrical conductivity, and a high diffusion rate of the electrolyte due to an appropriate pore volume. Herein, we report a high performance supercapacitor using activated non-stacked reduced graphene oxide (a-NSrGO) that has a high SSA (up to 999.75 m2 g-1) with intrinsic high graphene conductivity (1202 S m-1) and fast diffusion of the electrolyte. Due to a high total pore volume (5.03 cm3 g-1) and a wide pore size distribution from macro- to micropores (main pore width: 0.61 - 0.71 nm) in the a-NSrGO sheets, the as-prepared a-NSrGO electrode shows high specific capacitance (105.26 F g-1) and a short relaxation time (??0 = 1.5 s) in a propylene carbonate (PC)-based organic electrolyte. A maximum energy density of 91.13 W h kg-1 and a power density of 66 684.73 W kg-1 were estimated in a fully packaged coin cell. The high performance of the a-NSrGO supercapacitors is attributed to their specific appearance and enlarged pore distribution with high SSA.
KSP 제안 키워드
3D structure, Diffusion rate, Electrical conductivity(EC), Fast diffusion, Graphene oxide(GOS), High Specific Capacitance, High electrical conductivity, High specific surface area, High-performance supercapacitors, Pore Size Distribution, Pore distribution