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A Novel High-Energy Hybrid Supercapacitor with an Anatase TiO2-Reduced Graphene Oxide Anode and an Activated Carbon Cathode

Cited 366 time in Web of Science Cited 370 time in Scopus
Authors
Kim, Haegyeom; Cho, Min-Young; Kim, Mok-Hwa; Park, Kyu-Young; Gwon, Hyeokjo; Lee, Yunsung; Roh, Kwang Chul; Kang, Kisuk
Issue Date
2013-11
Citation
Advanced Energy Materials, Vol.3 No.11, pp.1500-1506
Abstract
A hybrid supercapacitor with high energy and power densities is reported. It comprises a composite anode of anatase TiO2 and reduced graphene oxide and an activated carbon cathode in a non-aqueous electrolyte. While intercalation compounds can provide high energy typically at the expense of power, the anatase TiO2 nanoparticles are able to sustain both high energy and power in the hybrid supercapacitor. At a voltage range from 1.0 to 3.0 V, 42 W h kg(-1) of energy is achieved at 800 W kg(-1). Even at a 4-s charge/discharge rate, an energy density as high as 8.9 W h kg(-1) can be retained. The high energy and power of this hybrid supercapacitor bridges the gap between conventional batteries with high energy and low power and supercapacitors with high power and low energy.
ISSN
1614-6832
URI
http://hdl.handle.net/10371/165129
DOI
https://doi.org/10.1002/aenm.201300467
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
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