Synthesis of NiO@MnO2 core/shell nanocomposites for supercapacitor application

Synthesis of NiO@MnO2 core/shell nanocomposites for supercapacitor application Article history: In this work, NiO@MnO core/shell nanocomposites were fabricated by a two-step method. The mor- Received 15 June 2015 phology and structure of the nanocomposites were characterized by scanning electron microscopy, Received in revised form 12 October 2015 transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction analysis and Accepted 26 October 2015 thermal gravity analysis. In addition, the supercapacitive performances were examined by cyclic voltam- Available online 31 October 2015 mogram (CV), galvanostatic charge–discharge and electrochemical impedance spectroscopy (EIS). The −1 electrochemical results indicate that the composite exhibits a specific capacitance of 266.7 F g at Keywords: −1 −1 0.5 A g and excellent cycling stability (81.7% retention after 2000 cycles at 1 A g ). Therefore, this wok NiO tube offers meaningful reference for supercpacitor applications in the future. MnO nanosheets © 2015 Elsevier B.V. All rights reserved. Supercapacitor Nanocomposites −1 1. Introduction including high theoretical specific capacitance (1370 F g ), natural abundance, low cost, environmental friendly and rich redox activity As a kind of energy storage device, supercapacitors (SCs) [9]. Unfortunately, the practical applications of MnO are limited have its unique properties, such as high power density, fast due to its weak rate capability and http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Surface Science Elsevier

Synthesis of NiO@MnO2 core/shell nanocomposites for supercapacitor application

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Publisher
Elsevier
Copyright
Copyright © 2015 Elsevier B.V.
ISSN
0169-4332
eISSN
1873-5584
D.O.I.
10.1016/j.apsusc.2015.10.187
Publisher site
See Article on Publisher Site

Abstract

Article history: In this work, NiO@MnO core/shell nanocomposites were fabricated by a two-step method. The mor- Received 15 June 2015 phology and structure of the nanocomposites were characterized by scanning electron microscopy, Received in revised form 12 October 2015 transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction analysis and Accepted 26 October 2015 thermal gravity analysis. In addition, the supercapacitive performances were examined by cyclic voltam- Available online 31 October 2015 mogram (CV), galvanostatic charge–discharge and electrochemical impedance spectroscopy (EIS). The −1 electrochemical results indicate that the composite exhibits a specific capacitance of 266.7 F g at Keywords: −1 −1 0.5 A g and excellent cycling stability (81.7% retention after 2000 cycles at 1 A g ). Therefore, this wok NiO tube offers meaningful reference for supercpacitor applications in the future. MnO nanosheets © 2015 Elsevier B.V. All rights reserved. Supercapacitor Nanocomposites −1 1. Introduction including high theoretical specific capacitance (1370 F g ), natural abundance, low cost, environmental friendly and rich redox activity As a kind of energy storage device, supercapacitors (SCs) [9]. Unfortunately, the practical applications of MnO are limited have its unique properties, such as high power density, fast due to its weak rate capability and

Journal

Applied Surface ScienceElsevier

Published: Jan 1, 2016

References

  • Synthesis of one-dimensional hierarchical NiO hollow nanostructures with enhanced supercapacitive performance
    Zhang, G.; Yu, L.; Hoster, H.E.; Lou, X.W.
  • Fast and reversible surface redox reaction of graphene-MnO2 composites as supercapacitor electrodes
    Yan, J.; Fan, Z.; Wei, T.; Qian, W.; Zhang, M.; Wei, F.
  • MnO2 nanosheets grown on the ZnO-nanorod-modified carbon fibers for supercapacitor electrode materials
    Zhao, Y.; Jiang, P.
  • Grafting effect on the wetting and electrochemical performance of carbon cloth electrode and polypropylene separator in electric double layer capacitor
    Stepniak, I.; Ciszewski, A.

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