Friday, February 20, 2015

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




Nanoscale , 2015, Advance Article

DOI: 10.1039/C5NR00135H, Communication

Sheng Liu, Shaojun Guo, Shouheng Sun, Xiao-Zeng You

Monodispersed dumbbell-like Au-Fe3 O4 nanoparticles (NPs) were synthesized and studied for supercapacitors. The NPs show Au/Fe3 O4 -size dependent capacitive behaviors with the best specific capacitance of 464 F g-1 at 1 A g-1 . This capacitive enhancement is believed to arise from Au-induced increase in electron transfer across the NPs demonstrating a new strategy to enhance oxide NP capacitances.

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