Facile Route to an Efficient NiO Supercapacitor with a Three-Dimensional Nanonetwork Morphology
- 1 February 2013
- journal article
- Published by American Chemical Society (ACS) in ACS Applied Materials & Interfaces
- Vol. 5 (5), 1596-1603
- https://doi.org/10.1021/am3021894
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.Keywords
This publication has 33 references indexed in Scilit:
- Nitrogen modification of highly porous carbon for improved supercapacitor performanceJournal of Materials Chemistry, 2012
- Versatile double hydrophilic block copolymer: dual role as synthetic nanoreactor and ionic and electronic conduction layer for ruthenium oxide nanoparticle supercapacitorsJournal of Materials Chemistry, 2012
- Microwave-assisted non-aqueous homogenous precipitation of nanoball-like mesoporous α-Ni(OH)2 as a precursor for NiOx and its application as a pseudocapacitorJournal of Materials Chemistry, 2012
- A review of electrode materials for electrochemical supercapacitorsChemical Society Reviews, 2012
- Single-crystalline Ni(OH)2 and NiO nanoplatelet arrays as supercapacitor electrodesNanoscale, 2011
- Nitrogen-containing microporous carbon nanospheres with improved capacitive propertiesEnergy & Environmental Science, 2010
- Advanced Materials for Energy StorageAdvanced Materials, 2010
- A Cost‐Effective Supercapacitor Material of Ultrahigh Specific Capacitances: Spinel Nickel Cobaltite Aerogels from an Epoxide‐Driven Sol–Gel ProcessAdvanced Materials, 2010
- Ordered Whiskerlike Polyaniline Grown on the Surface of Mesoporous Carbon and Its Electrochemical Capacitance PerformanceAdvanced Materials, 2006
- Electrochemical Properties of High-Power Supercapacitors Using Single-Walled Carbon Nanotube ElectrodesAdvanced Functional Materials, 2001