TY - JOUR
T1 - Nanostructured ternary electrodes for energy-storage applications
AU - Baby, Rakhi Raghavan
AU - Chen, Wei
AU - Cha, Dong Kyu
AU - Alshareef, Husam N.
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2012/2/13
Y1 - 2012/2/13
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/562095
UR - http://doi.wiley.com/10.1002/aenm.201100609
UR - http://www.scopus.com/inward/record.url?scp=84863696671&partnerID=8YFLogxK
U2 - 10.1002/aenm.201100609
DO - 10.1002/aenm.201100609
M3 - Article
SN - 1614-6832
VL - 2
SP - 381
EP - 389
JO - Advanced Energy Materials
JF - Advanced Energy Materials
IS - 3
ER -