Effective Surface Area Control of Single-Wall Carbon Nanohorns for Supercapacitor Application

Title
Effective Surface Area Control of Single-Wall Carbon Nanohorns for Supercapacitor Application
Authors
정환중김용중정용채Hirofumi KanohKatsumi Kaneko양철민
Keywords
SWNH; Supercapacitor
Issue Date
2013-05
Publisher
International Conference on Advanced Capacitors
Abstract
Supercapacitors have attracted much attention as power supply devices for electric vehicles and hybrid electric vehicles. Because of high specific surface area (SSA) and excellent electrical conductivity of nanostructured carbons, they have been actively studied as hopeful electrode materials for energy storage. Several parameters of nanostructured carbons are recognized as key factors in terms of their application as supercapacitor electrode materials: SSA, pore size distribution, surface chemical state, and electrical conductivity. In particular, the pore size and electrical conductivity of the electrode materials are important parameters from the viewpoint of ion diffusivity and effective electrode surface area which are closely related to enhancement in the specific capacitance of supercapacitors. Here, we investigated the heat-treatment effect of single-wall carbon nanohorns (SWCNHs) on their capacitive properties of supercapacitor electrode to elucidate the relationship between the electrical conductivity of the SWCNHs and the electrolyte ion diffusivity. In addition, capacitance behaviors of the SWCNH electrodes were compared for the aqueous and organic electrolytes with different solvated ion sizes.
URI
http://pubs.kist.re.kr/handle/201004/45778
Appears in Collections:
KIST Publication > Conference Paper
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