Edge-Enriched, Porous Carbon-Based, High Energy Density Supercapacitors for Hybrid Electric Vehicles

Title
Edge-Enriched, Porous Carbon-Based, High Energy Density Supercapacitors for Hybrid Electric Vehicles
Authors
김용중양철민박기철가츠미 가네코김융암미노루 노구치다케시 후지노시게키 오야마모리노부 엔도
Keywords
Supercapacitor; Porous Carbon; Hybrid Electric Vehicles; carbon; edges; electron microscopy; energy storage
Issue Date
2012-03
Publisher
ChemSusChem
Citation
VOL 5, NO 3, 535-541
Abstract
Supercapacitors can store and deliver energy by a simple charge separation, and thus they could be an attractive option to meet transient high energy density in operating fuel cells and in electric and hybrid electric vehicles. To achieve such requirements, intensive studies have been carried out to improve the volumetric capacitance in supercapacitors using various types and forms of carbons including carbon nanotubes and graphenes. However, conventional porous carbons are not suitable for use as electrode material in supercapacitors for such high energy density applications. Here, we show that edge-enriched porous carbons are the best electrode material for high energy density supercapacitors to be used in vehicles as an auxiliary powertrain. Molten potassium hydroxide penetrates well-aligned graphene layers vertically and consequently generates both suitable pores that are easily accessible to the electrolyte and a large fraction of electrochemically active edge sites. We expect that our findings will motivate further research related to energy storage devices and also environmentally friendly electric vehicles.
URI
http://pubs.kist.re.kr/handle/201004/42139
ISSN
18645631
Appears in Collections:
KIST Publication > Article
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