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Author

Song, Hyun-Kon
eclat: ElectroChemistry Lab of Advanced Technology
Research Interests
  • Electrochemical analysis, electroactive materials, electrochemistry-based energy devices

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Facile Route to an Efficient NiO Supercapacitor with a Three-Dimensional Nanonetwork Morphology

Cited 50 times inthomson ciCited 30 times inthomson ci
Title
Facile Route to an Efficient NiO Supercapacitor with a Three-Dimensional Nanonetwork Morphology
Author
Kim, Sun-ILee, Jung-SooAhn, Hyo-JinSong, Hyun-KonJang, Ji-Hyun
Keywords
Flower-shaped nanostructures; Meso-pores; morphology-dependent properties; NiO; NiO nanostructures; Pseudocapacitance; Three-dimensional (3D) networks; Three-dimensional networks
Issue Date
201303
Publisher
AMER CHEMICAL SOC
Citation
ACS APPLIED MATERIALS & INTERFACES, v.5, no.5, pp.1596 - 1603
Abstract
NiO nanostructures with three distinct morphologies were fabricated by a sol-gel method and their morphology-dependent supercapacitor properties were exploited. The nanoflower- shaped NiO with a distinctive three-dimensional (3D) network and the highest pore volume shows the best supercapacitor properties. The nanopores in flower-shaped nanostructures, offering advantages in contact with and transport of the electrolyte, allow for 3D nanochannels in NiO structure, providing longer electron pathways. The XPS and EIS data of the NiO nanostructure confirm that the flower-shaped NiO, which has the lowest surface area among the three morphologies, was effectively optimized as a superior electrode and yielded the greatest pseudocapacitance. This study indicates that forming a 3D nanonetwork is a straightforward means of improving the electrochemical properties of a supercapacitor.
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DOI
http://dx.doi.org/10.1021/am3021894
ISSN
1944-8244
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