Rational design of coaxial mesoporous birnessite manganese dioxide/amorphous-carbon nanotubes arrays for advanced asymmetric supercapacitors

Handle URI:
http://hdl.handle.net/10754/564079
Title:
Rational design of coaxial mesoporous birnessite manganese dioxide/amorphous-carbon nanotubes arrays for advanced asymmetric supercapacitors
Authors:
Zhu, Shijin; Zhang, Jie; Ma, Junjun; Zhang, Yuxin; Yao, Kexin
Abstract:
Coaxial mesoporous MnO2/amorphous-carbon nanotubes have been synthesized via a facile and cost-effective strategy at room temperature. The coaxial double nanotubes of inner (outer) MnO2 and outer (inner) amorphous carbon can be obtained via fine tuning the preparative factors (e.g., deposition order and processing temperature). Furthermore, the electrochemical properties of the coaxial nanotubes were evaluated by cycle voltammetric (CV) and galvanostatic charge-discharge (GC) measurements. The as-prepared coaxial double nanotubes of outer MnO2 and inner amorphous carbon exhibit the optimized pseudocapacitance performance (362 F g-1) with good cycling stability, and ideal rate capability owning to the unique nanostructures. When assembled into two-electrode asymmetric supercapacitor, an energy density of 22.56 W h kg-1 at a power density of 224.9 W kg-1 is obtained. These findings provide a new and facile approach to fabricate high-performance electrode for supercapacitors.
KAUST Department:
Advanced Membranes and Porous Materials Research Center
Publisher:
Elsevier BV
Journal:
Journal of Power Sources
Issue Date:
Mar-2015
DOI:
10.1016/j.jpowsour.2014.12.054
Type:
Article
ISSN:
03787753
Sponsors:
The authors gratefully acknowledge the financial supports provided by National Natural Science Foundation of China (Grant no. 51104194 and 51104121), National Key laboratory of Fundamental Science of Micro/Nano-device and System Technology (2013MS06, Chongqing University), State Education Ministry and Fundamental Research Funds for the Central Universities (Project no. CDJZR14135501 and CDJZR13130035, Chongqing University, PR China). The authors acknowledge support on materials characterization by Dr. Gang Li in Northwest Institute for Nonferrous Metal Research, Xi'an 710016, PR China.
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorZhu, Shijinen
dc.contributor.authorZhang, Jieen
dc.contributor.authorMa, Junjunen
dc.contributor.authorZhang, Yuxinen
dc.contributor.authorYao, Kexinen
dc.date.accessioned2015-08-03T12:31:12Zen
dc.date.available2015-08-03T12:31:12Zen
dc.date.issued2015-03en
dc.identifier.issn03787753en
dc.identifier.doi10.1016/j.jpowsour.2014.12.054en
dc.identifier.urihttp://hdl.handle.net/10754/564079en
dc.description.abstractCoaxial mesoporous MnO2/amorphous-carbon nanotubes have been synthesized via a facile and cost-effective strategy at room temperature. The coaxial double nanotubes of inner (outer) MnO2 and outer (inner) amorphous carbon can be obtained via fine tuning the preparative factors (e.g., deposition order and processing temperature). Furthermore, the electrochemical properties of the coaxial nanotubes were evaluated by cycle voltammetric (CV) and galvanostatic charge-discharge (GC) measurements. The as-prepared coaxial double nanotubes of outer MnO2 and inner amorphous carbon exhibit the optimized pseudocapacitance performance (362 F g-1) with good cycling stability, and ideal rate capability owning to the unique nanostructures. When assembled into two-electrode asymmetric supercapacitor, an energy density of 22.56 W h kg-1 at a power density of 224.9 W kg-1 is obtained. These findings provide a new and facile approach to fabricate high-performance electrode for supercapacitors.en
dc.description.sponsorshipThe authors gratefully acknowledge the financial supports provided by National Natural Science Foundation of China (Grant no. 51104194 and 51104121), National Key laboratory of Fundamental Science of Micro/Nano-device and System Technology (2013MS06, Chongqing University), State Education Ministry and Fundamental Research Funds for the Central Universities (Project no. CDJZR14135501 and CDJZR13130035, Chongqing University, PR China). The authors acknowledge support on materials characterization by Dr. Gang Li in Northwest Institute for Nonferrous Metal Research, Xi'an 710016, PR China.en
dc.publisherElsevier BVen
dc.subjectAsymmetric supercapacitorsen
dc.subjectHydrothermalen
dc.subjectManganese dioxideen
dc.subjectSelf-assemblyen
dc.titleRational design of coaxial mesoporous birnessite manganese dioxide/amorphous-carbon nanotubes arrays for advanced asymmetric supercapacitorsen
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.identifier.journalJournal of Power Sourcesen
dc.contributor.institutionCollege of Material Science and Engineering, Chongqing UniversityChongqing, Chinaen
dc.contributor.institutionKey Laboratory for Optoelectronic Technology and Systems, Educational Ministry of China, Chongqing UniversityChongqing, Chinaen
dc.contributor.institutionNational Key Laboratory of Fundamental Science of Micro/Nano-Devices and System Technology, Chongqing UniversityChongqing, Chinaen
dc.contributor.institutionBeacon LED Lighting Pte. Ltd, Boon Lay WaySingapore, Singaporeen
kaust.authorYao, Kexinen
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