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http://dx.doi.org/10.5012/bkcs.2009.30.4.817

A Novel Hybrid Supercapacitor Using a Graphite Cathode and a Niobium(V) Oxide Anode  

Park, Gum-Jae (Department of Applied Chemistry, Saga University)
Kalpana, D. (Faculty of Applied Chemical Engineering, Chonnam National University)
Thapa, Arjun Kumar (Department of Applied Chemistry, Saga University)
Nakamura, Hiroyoshi (Department of Applied Chemistry, Saga University)
Lee, Yun-Sung (Faculty of Applied Chemical Engineering, Chonnam National University)
Yoshio, Masaki (Department of Applied Chemistry, Saga University)
Publication Information
Bulletin of the Korean Chemical Society / v.30, no.4, 2009 , pp. 817-820 More about this Journal
Abstract
To meet the high current load requirement from the high energy density realized by metal oxide and high power density graphite, we propose a novel hybrid supercapacitor consisting of Nb2O5 and KS6 graphite in 1.0 M LiPF6-EC:DEC (1:2). This new system exhibits a sloping voltage profile from 2.7 to 3.5 V during charging and presents a high operating voltage plateau between 1.5 and 3.5 V during discharging. The cell was tested at a current density of 100 mA/g with a cut-off voltage between 3.0 and 1.0 V. This novel energy storage system delivers the highest initial discharge capacity of 55 mAh/g and exhibits a good cycle performance.
Keywords
Novel energy storage system; Graphite; Niobium(V) oxide; Intercalation/de-intercalation;
Citations & Related Records

Times Cited By Web Of Science : 8  (Related Records In Web of Science)
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