Nanostructured ternary electrodes for energy-storage applications
Type
ArticleKAUST Department
Advanced Membranes and Porous Materials Research CenterCore Labs
Functional Nanomaterials and Devices Research Group
Imaging and Characterization Core Lab
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
Date
2012-02-13Online Publication Date
2012-02-13Print Publication Date
2012-03Permanent link to this record
http://hdl.handle.net/10754/562095
Metadata
Show full item recordAbstract
A three-component, flexible electrode is developed for supercapacitors over graphitized carbon fabric, utilizing γ-MnO 2 nanoflowers anchored onto carbon nanotubes (γ-MnO 2/CNT) as spacers for graphene nanosheets (GNs). The three-component, composite electrode doubles the specific capacitance with respect to GN-only electrodes, giving the highest-reported specific capacitance (308 F g -1) for symmetric supercapacitors containing MnO 2 and GNs using a two-electrode configuration, at a scan rate of 20 mV s -1. A maximum energy density of 43 W h kg -1 is obtained for our symmetric supercapacitors at a constant discharge-current density of 2.5 A g -1 using GN-(γ-MnO 2/CNT)-nanocomposite electrodes. The fabricated supercapacitor device exhibits an excellent cycle life by retaining ≈90% of the initial specific capacitance after 5000 cycles. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.Citation
Rakhi, R. B., Chen, W., Cha, D., & Alshareef, H. N. (2012). Nanostructured Ternary Electrodes for Energy-Storage Applications. Advanced Energy Materials, 2(3), 381–389. doi:10.1002/aenm.201100609Publisher
WileyJournal
Advanced Energy Materialsae974a485f413a2113503eed53cd6c53
10.1002/aenm.201100609