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Issue 11, 2015
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Dumbbell-like Au-Fe3O4 nanoparticles: a new nanostructure for supercapacitors

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Abstract

Monodispersed dumbbell-like Au-Fe3O4 nanoparticles (NPs) were synthesized and studied for use in supercapacitors. These dumbbell NPs show Au/Fe3O4-size dependent capacitive behaviors and the 7–14 nm Au-Fe3O4 NPs have the best specific capacitance of 464 F g−1 at 1 A g−1 and capacity retention of 86.4% after 1000 cycles, much larger than pure Fe3O4 NPs (160 F g−1 and 72.8% retention). This capacitive enhancement is believed to arise from the Au-induced increase in electron transfer across the dumbbell-like NPs. Thise report demonstrates a new strategy to enhance oxide NP capacitance for applications in high performance supercapacitors.

Graphical abstract: Dumbbell-like Au-Fe3O4 nanoparticles: a new nanostructure for supercapacitors

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Publication details

The article was received on 08 Jan 2015, accepted on 06 Feb 2015 and first published on 10 Feb 2015


Article type: Communication
DOI: 10.1039/C5NR00135H
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Citation: Nanoscale, 2015,7, 4890-4893

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    Dumbbell-like Au-Fe3O4 nanoparticles: a new nanostructure for supercapacitors

    S. Liu, S. Guo, S. Sun and X. You, Nanoscale, 2015, 7, 4890
    DOI: 10.1039/C5NR00135H

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