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Hybrid NiCo2S4@MnO2 heterostructures for highperformance supercapacitor electrodes.
- Source :
- Journal of Materials Chemistry A; 2015, Vol. 3 Issue 3, p1258-1264, 6p, 2 Black and White Photographs, 1 Diagram, 5 Graphs
- Publication Year :
- 2015
-
Abstract
- Using a simple hydrothermal route coupled with a carbonization treatment, one-dimensional NiCo<subscript>2</subscript>S<subscript>4</subscript>@MnO<subscript>2</subscript> heterostructures have been fabricated successfully. Scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM) measurements showed that MnO<subscript>2</subscript> nanoflakes uniformly wrapped around the surface of NiCo<subscript>2</subscript>S<subscript>4</subscript> nanotubes and formed core- shell heterostructured nanotubes, which combine the advantages of both NiCo<subscript>2</subscript>S<subscript>4</subscript> such as excellent cycle stability and MnO<subscript>2</subscript> such as high capacity. Serving as a supercapacitor electrode, the NiCo<subscript>2</subscript>S<subscript>4</subscript>@MnO<subscript>2</subscript> heterostructures possess a remarkable specific capacitance (1337.8 F g<superscript>-1</superscript> at the current density of 2.0 A g<superscript>-1</superscript>) and excellent cycling stability (retaining 82% after 2000 cycles) due to the synergistic effects of NiCo<subscript>2</subscript>S<subscript>4</subscript> and MnO<subscript>2</subscript>. These unique nanoarchitectures demonstrate potential applications in energy storage electrodes and may inspire researchers to continue to focus on heterostructured materials. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20507488
- Volume :
- 3
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Journal of Materials Chemistry A
- Publication Type :
- Academic Journal
- Accession number :
- 100125665
- Full Text :
- https://doi.org/10.1039/c4ta05747c