Facile synthesis of ultrathin manganese dioxide nanosheets arrays on nickel foam as advanced binder-free supercapacitor electrodes

Handle URI:
http://hdl.handle.net/10754/598306
Title:
Facile synthesis of ultrathin manganese dioxide nanosheets arrays on nickel foam as advanced binder-free supercapacitor electrodes
Authors:
Huang, Ming; Zhao, Xiao Li; Li, Fei; Zhang, Li Li; Zhang, Yu Xin
Abstract:
© 2014 Elsevier B.V. Ultrathin MnO2 nanosheets arrays on Ni foam have been fabricated by a facile hydrothermal approach and further investigated as the binder-free electrode for high-performance supercapacitors. This unique well-designed binder-free electrode exhibits a high specific capacitance (595.2 F g-1 at a current density of 0.5 A g-1), good rate capability (64.1% retention), and excellent cycling stability (89% capacitance retention after 3000 cycles). Moreover, an asymmetric supercapacitor is constructed using the as-prepared MnO2 nanosheets arrays as the positive electrode and activated microwave exfoliated graphite oxide (MEGO) as the negative electrode. The optimized asymmetric supercapacitor displays excellent electrochemical performance with an energy density of 25.8 Wh kg-1 and a maximum power density of 223.2 kW kg-1. These impressive performances suggest that the MnO2 nanosheet array is a promising electrode material for supercapacitors.
Citation:
Huang M, Zhao XL, Li F, Zhang LL, Zhang YX (2015) Facile synthesis of ultrathin manganese dioxide nanosheets arrays on nickel foam as advanced binder-free supercapacitor electrodes. Journal of Power Sources 277: 36–43. Available: http://dx.doi.org/10.1016/j.jpowsour.2014.12.005.
Publisher:
Elsevier BV
Journal:
Journal of Power Sources
Issue Date:
Mar-2015
DOI:
10.1016/j.jpowsour.2014.12.005
Type:
Article
ISSN:
0378-7753
Sponsors:
The authors gratefully acknowledge the financial supports provided by National Natural Science Foundation of China (Grant no. 51104194), 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 nos. CDJZR14135501 and CDJZR13130035, Chongqing University, PR China). The authors acknowledge support on electrochemical characterization by Dr. Kexin Yao in King Abdullah University of Science and Technology, Saudi Arabia.
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Full metadata record

DC FieldValue Language
dc.contributor.authorHuang, Mingen
dc.contributor.authorZhao, Xiao Lien
dc.contributor.authorLi, Feien
dc.contributor.authorZhang, Li Lien
dc.contributor.authorZhang, Yu Xinen
dc.date.accessioned2016-02-25T13:18:23Zen
dc.date.available2016-02-25T13:18:23Zen
dc.date.issued2015-03en
dc.identifier.citationHuang M, Zhao XL, Li F, Zhang LL, Zhang YX (2015) Facile synthesis of ultrathin manganese dioxide nanosheets arrays on nickel foam as advanced binder-free supercapacitor electrodes. Journal of Power Sources 277: 36–43. Available: http://dx.doi.org/10.1016/j.jpowsour.2014.12.005.en
dc.identifier.issn0378-7753en
dc.identifier.doi10.1016/j.jpowsour.2014.12.005en
dc.identifier.urihttp://hdl.handle.net/10754/598306en
dc.description.abstract© 2014 Elsevier B.V. Ultrathin MnO2 nanosheets arrays on Ni foam have been fabricated by a facile hydrothermal approach and further investigated as the binder-free electrode for high-performance supercapacitors. This unique well-designed binder-free electrode exhibits a high specific capacitance (595.2 F g-1 at a current density of 0.5 A g-1), good rate capability (64.1% retention), and excellent cycling stability (89% capacitance retention after 3000 cycles). Moreover, an asymmetric supercapacitor is constructed using the as-prepared MnO2 nanosheets arrays as the positive electrode and activated microwave exfoliated graphite oxide (MEGO) as the negative electrode. The optimized asymmetric supercapacitor displays excellent electrochemical performance with an energy density of 25.8 Wh kg-1 and a maximum power density of 223.2 kW kg-1. These impressive performances suggest that the MnO2 nanosheet array is a promising electrode material for supercapacitors.en
dc.description.sponsorshipThe authors gratefully acknowledge the financial supports provided by National Natural Science Foundation of China (Grant no. 51104194), 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 nos. CDJZR14135501 and CDJZR13130035, Chongqing University, PR China). The authors acknowledge support on electrochemical characterization by Dr. Kexin Yao in King Abdullah University of Science and Technology, Saudi Arabia.en
dc.publisherElsevier BVen
dc.subjectAsymmetric supercapacitorsen
dc.subjectBinder-freeen
dc.subjectHydrothermalen
dc.subjectManganese dioxideen
dc.titleFacile synthesis of ultrathin manganese dioxide nanosheets arrays on nickel foam as advanced binder-free supercapacitor electrodesen
dc.typeArticleen
dc.identifier.journalJournal of Power Sourcesen
dc.contributor.institutionChongqing University, Chongqing, Chinaen
dc.contributor.institutionUlsan National Institute of Science and Technology, Ulsan, South Koreaen
dc.contributor.institutionAgency for Science, Technology and Research, Singapore, Singapore City, Singaporeen
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