KAUST DepartmentMaterials Science and Engineering Program
Physical Sciences and Engineering (PSE) Division
Advanced Membranes and Porous Materials Research Center
Functional Nanomaterials and Devices Research Group
Permanent link to this recordhttp://hdl.handle.net/10754/561956
MetadataShow full item record
AbstractA simple and scalable method has been developed to fabricate nanostructured MnO 2-carbon nanotube (CNT)-sponge hybrid electrodes. A novel supercapacitor, henceforth referred to as "sponge supercapacitor", has been fabricated using these hybrid electrodes with remarkable performance. A specific capacitance of 1230 F/g (based on the mass of MnO 2) can be reached. Capacitors based on CNT-sponge substrates (without MnO 2) can be operated even under a high scan rate of 200 V/s, and they exhibit outstanding cycle performance with only 2% degradation after 100000 cycles under a scan rate of 10 V/s. The MnO 2-CNT-sponge supercapacitors show only 4% of degradation after 10000 cycles at a charge-discharge specific current of 5 A/g. The specific power and energy of the MnO 2-CNT-sponge supercapacitors are high with values of 63 kW/kg and 31 Wh/kg, respectively. The attractive performances exhibited by these sponge supercapacitors make them potentially promising candidates for future energy storage systems. © 2011 American Chemical Society.
SponsorsThe authors thank for the characterization analysis provided by KAUST Advanced Imaging and Characterization Laboratory and Analytic Core Laboratory. W.C. acknowledges support from KAUST Graduate Fellowship. H.A. acknowledges the support from KAUST baseline fund. Y.C. acknowledges support from the King Abdullah University of Science and Technology (KAUST) Investigator Award (No. KUS11-001-12) and the Precourt Institute for Energy at Stanford. X.X. acknowledges support from the Stanford Graduate Fellowship.
PublisherAmerican Chemical Society (ACS)
- Flexible Zn2SnO4/MnO2 core/shell nanocable-carbon microfiber hybrid composites for high-performance supercapacitor electrodes.
- Authors: Bao L, Zang J, Li X
- Issue date: 2011 Mar 9
- Intertwined nanocarbon and manganese oxide hybrid foam for high-energy supercapacitors.
- Authors: Wang W, Guo S, Bozhilov KN, Yan D, Ozkan M, Ozkan CS
- Issue date: 2013 Nov 11
- Enhancing the supercapacitor performance of graphene/MnO2 nanostructured electrodes by conductive wrapping.
- Authors: Yu G, Hu L, Liu N, Wang H, Vosgueritchian M, Yang Y, Cui Y, Bao Z
- Issue date: 2011 Oct 12
- Graphene-patched CNT/MnO2 nanocomposite papers for the electrode of high-performance flexible asymmetric supercapacitors.
- Authors: Jin Y, Chen H, Chen M, Liu N, Li Q
- Issue date: 2013 Apr 24
- High-performance asymmetric supercapacitor based on graphene hydrogel and nanostructured MnO2.
- Authors: Gao H, Xiao F, Ching CB, Duan H
- Issue date: 2012 May